K. Ogasawara

K. Ogasawara, S. Fujiwara, Masakazu Kobayashi, 2021, Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association.

Outcomes of medical management alone for adult patients with cerebral misery perfusion due to ischemic moyamoya disease.

K. Ogasawara, S. Fujiwara, Masakazu Kobayashi, 2022, Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association.

Transient Symptomatic Downregulation of Cortical Neurotransmitter Receptor Function Due to Cerebral Hyperperfusion after Arterial Bypass Surgery for a Patient with Ischemic Moyamoya Disease

J. Yoshida, K. Ogasawara, S. Fujiwara, 2018, Neurologia medico-chirurgica.

Ischemic Adult Moyamoya Disease with a Collapsed Unruptured Aneurysm in the Middle Cerebral Artery

Takashi Inoue, K. Ogasawara, A. Ogawa, 2008 .

Intracerebral hemorrhage after prophylactic revascularization in a patient with adult moyamoya disease.

K. Ogasawara, Y. Otawara, A. Ogawa, 2007, Surgical neurology.

Primary granulomatous angiitis of the central nervous system: findings of magnetic resonance spectroscopy and fractional anisotropy in diffusion tensor imaging prior to surgery. Case report.

Takashi Inoue, K. Ogasawara, A. Ogawa, 2007, Journal of neurosurgery.

Small Unruptured Aneurysm Verification-prevention Effect against Growth of Cerebral Aneurysm Study Using Statin

Kazumichi Yoshida, H. Nakase, K. Ogasawara, 2021, Neurologia medico-chirurgica.

The Japan Neurosurgical Database: Statistics Update 2018 and 2019

Y. Fujii, K. Nozaki, H. Nakase, 2021, Neurologia medico-chirurgica.

Simple assessment of the localization of posterior communicating artery aneurysms to the anterior petroclinoid ligament

H. Kashimura, K. Ogasawara, S. Fujiwara, 2019, Journal of Clinical Neuroscience.

Angiographic, Cerebral Hemodynamic, and Cognitive Outcomes of Indirect Revascularization Surgery Alone for Adult Patients With Misery Perfusion due to Ischemic Moyamoya Disease

K. Ogasawara, S. Fujiwara, Masakazu Kobayashi, 2022, Neurosurgery.

Medullary streaks in a patient with atherosclerotic internal carotid artery occlusion: case report.

Takashi Inoue, K. Ogasawara, A. Ogawa, 2004, Surgical neurology.

Concept and Prospects in Open Surgery for Cerebral Aneurysms to prevent Complications

H. Kashimura, K. Ogasawara, Y. Otawara, 2018 .

Differences in Clinical Characteristics between Patients with Transient Ischemic Attack Whose Symptoms Do and Do Not Persist on Arrival.

K. Ogasawara, K. Iihara, S. Uchiyama, 2016, Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association.

Hemorrhagic infarction at 33 days after birth in a healthy full-term neonate

H. Kashimura, K. Ogasawara, Y. Otawara, 2011, Vascular health and risk management.

Comparisons Between PET With 11C-Methyl-L-Methionine and Arterial Spin Labeling Perfusion Imaging in Recurrent Glioblastomas Treated With Bevacizumab

F. Yamashita, K. Ogasawara, M. Sasaki, 2019, Clinical nuclear medicine.

High-uptake areas on positron emission tomography with the hypoxic radiotracer 18F-FRP170 in glioblastomas include regions retaining proliferative activity under hypoxia

K. Ogasawara, M. Sasaki, R. Iwata, 2015, Annals of Nuclear Medicine.

Postoperative Cerebral White Matter Damage Associated with Cerebral Hyperperfusion and Cognitive Impairment after Carotid Endarterectomy: A Diffusion Tensor Magnetic Resonance Imaging Study

K. Ogasawara, A. Ogawa, S. Fujiwara, 2012, Cerebrovascular Diseases.

Neurological Grades of Patients with Poor-grade Subarachnoid Hemorrhage Improve after Short-term Pretreatment

K. Ogasawara, Y. Otawara, A. Ogawa, 2000, Neurosurgery.

Quantification of susceptibility artifacts produced on high-field magnetic resonance images by various biomaterials used for neurosurgical implants. Technical note.

Takashi Inoue, K. Ogasawara, A. Ogawa, 2002, Journal of neurosurgery.

The Japan Neurosurgical Database: Overview and Results of the First-year Survey

Y. Fujii, K. Hongo, Y. Kato, 2020, Neurologia medico-chirurgica.

Rupture of a concomitant unruptured cerebral aneurysm within 2 weeks of surgical repair of a ruptured cerebral aneurysm--case report.

K. Ogasawara, A. Ogawa, Y. Kubo, 2008, Neurologia medico-chirurgica.

Minute glioma identified by 3.0 Tesla magnetic resonance spectroscopy--case report.

H. Jokura, Takashi Inoue, K. Ogasawara, 2005, Neurologia medico-chirurgica.

Dissecting Aneurysms of the Bilateral Vertebral Arteries with Subarachnoid Hemorrhage: Report of Three Cases

K. Ogasawara, Y. Otawara, A. Ogawa, 2002, Neurosurgery.

Evaluation of Vasospasm after Subarachnoid Hemorrhage by Use of Multislice Computed Tomographic Angiography

K. Ogasawara, Y. Otawara, A. Ogawa, 2002, Neurosurgery.

Genetic Predisposition to Ischemic Stroke A Polygenic Risk Score

Y. Kamatani, K. Matsuda, M. Kubo, 2017 .

Diffusion Anisotropy Color‐Coded Map of Cerebral White Matter: Quantitative Comparison between Orthogonal Anisotropic Diffusion‐Weighted Imaging and Diffusion Tensor Imaging

K. Ogasawara, A. Ogawa, S. Fujiwara, 2013, Journal of neuroimaging : official journal of the American Society of Neuroimaging.

Brain and systemic temperature in patients with severe subarachnoid hemorrhage.

K. Ogasawara, Y. Otawara, A. Ogawa, 2003, Surgical neurology.

Improvement of Gait Disturbance after Spinal Cord Stimulation for a Patient with Failed Back Surgery Syndrome : A Triaxial Accelerometer Study: ―歩行分析計を用いて客観的・定量的に解析した1例―

K. Ogasawara, S. Fujiwara, Y. Nishikawa, 2018 .

Choking injuries: Associated factors and error-producing conditions among acute hospital patients in Japan

K. Ogasawara, R. Uozumi, K. Koeda, 2022, PloS one.

Significance of Nonfocal Symptoms in Patients With Transient Ischemic Attack.

K. Ogasawara, K. Iihara, S. Uchiyama, 2018, Stroke.

K. Ogasawara, A. Ogawa, A. Okayama, 2013 .

Inhibitory Effects of Eicosapentaenoic Acid on Chronic Cerebral Vasospasm after Subarachnoid Hemorrhage: Possible Involvement of a Sphingosylphosphorylcholine-Rho-Kinase Pathway

K. Ogasawara, Michiyasu Suzuki, H. Fujisawa, 2008, Cerebrovascular Diseases.

Experimental study on the reversibility of cerebral ischemia

T. Yoshimoto, K. Ogasawara, J. Suzuki, 1987, Acta Neurochirurgica.

Stevens-Johnson syndrome associated with intravenous acetazolamide administration for evaluation of cerebrovascular reactivity. Case report.

Takashi Inoue, K. Ogasawara, A. Ogawa, 2006, Neurologia medico-chirurgica.

Cognitive impairment associated with intraoperative and postoperative hypoperfusion without neurologic deficits in a patient undergoing carotid endarterectomy.

Takashi Inoue, K. Ogasawara, A. Ogawa, 2006, Surgical neurology.

Clinicopathological risk factors for a poor prognosis of primary central nervous system lymphoma in elderly patients in the Tohoku and Niigata area: a multicenter, retrospective, cohort study of the Tohoku Brain Tumor Study Group

Y. Fujii, Kiyoshi Saito, K. Ogasawara, 2022, Brain Tumor Pathology.

Apparent diffusion coefficient and arterial spin labeling perfusion of conventional chondrosarcoma in the parafalcine region: a case report

K. Ogasawara, S. Fujiwara, T. Beppu, 2017, Radiology case reports.

Effect of free radical scavenger, edaravone, for patients with carbon monoxide poisoning

K. Ogasawara, M. Sasaki, M. Onodera, 2015, Clinical Neurology and Neurosurgery.

Incidence and Predictors of Ischemic Stroke Events during Hospitalization in Patients with Transient Ischemic Attack

K. Ogasawara, K. Iihara, S. Uchiyama, 2014, Cerebrovascular Diseases.

Results of Prospective Cohort Study on Symptomatic Cerebrovascular Occlusive Disease Showing Mild Hemodynamic Compromise [Japanese Extracranial-Intracranial Bypass Trial (JET)-2 Study]

E. Mori, K. Ogasawara, A. Ogawa, 2015, Neurologia medico-chirurgica.

Superficial Temporal Artery-Middle Cerebral Artery Bypass for Rapid Deterioration of Visual Acuity Due to Retinal Ischemia in a Patient with Chronic Internal Carotid Artery Occlusion: A Case Report

K. Ogasawara, A. Ogawa, Masakazu Kobayashi, 2013 .

[JET study (Japanese EC-IC Bypass Trial)].

K. Ogasawara, A. Ogawa, 2006, Nihon rinsho. Japanese journal of clinical medicine.

Traumatic vertebral artery occlusion caused by during sumo practice; two case reports

K. Ogasawara, S. Endo, Y. Yoshida, 2009 .

Carotid plaque signal differences among four kinds of T1-weighted magnetic resonance imaging techniques: A histopathological correlation study

K. Ogasawara, J. Hitomi, M. Sasaki, 2012, Neuroradiology.

MR contrast in mouse lymph nodes with subcutaneous administration of iron oxide particles: size dependency.

M. Fukunaga, M. Umeda, K. Ogasawara, 2011, Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine.

Development of cerebral microbleeds in patients with cerebral hyperperfusion following carotid endarterectomy and its relation to postoperative cognitive decline.

J. Yoshida, K. Ogasawara, S. Fujiwara, 2021, Journal of neurosurgery.

Factors Associated With Onset-to-Door Time in Patients With Transient Ischemic Attack Admitted to Stroke Centers

K. Ogasawara, K. Iihara, S. Uchiyama, 2014, Stroke.

Subtemporal approach to basilar tip aneurysm with division of posterior communicating artery: Technical note

K. Ogasawara, A. Ogawa, H. Nishimoto, 2008, Vascular health and risk management.

Transient ischemic attack without self‐awareness of symptoms witnessed by bystanders: analysis of the PROMISE‐TIA registry

K. Ogasawara, K. Iihara, S. Uchiyama, 2020, European journal of neurology.

Treatment of vertebral artery aneurysms with transposition of the posterior inferior cerebellar artery to the vertebral artery combined with parent artery occlusion. Technical note.

K. Ogasawara, Y. Otawara, A. Ogawa, 2006, Journal of neurosurgery.

Implementing an Intervention to Improve Adverse Incident Reporting in the Hospital Setting: A Pilot Study

K. Ogasawara, R. Uozumi, K. Koeda, 2020 .

A prospective, multicentre, single-arm clinical trial of bevacizumab for patients with surgically untreatable, symptomatic brain radiation necrosis†

K. Sugiyama, Hideo Nakamura, J. Shinoda, 2016, Neuro-oncology practice.

Preoperative imaging of superficially located glioma resection using short inversion-time inversion recovery images in high-field magnetic resonance imaging

Takashi Inoue, K. Ogasawara, A. Ogawa, 2007, Clinical Neurology and Neurosurgery.

PET With 11C-Methyl-l-Methionine as a Predictor of Consequential Outcomes at the Time of Discontinuing Temozolomide-Adjuvant Chemotherapy in Patients With Residual IDH-Mutant Lower-Grade Glioma

T. Iwaya, K. Ogasawara, T. Sugai, 2022, Clinical nuclear medicine.

The Real-World status and risk factors for a poor prognosis in elderly patients with primary central nervous system malignant lymphomas: a multicenter, retrospective cohort study of the Tohoku Brain Tumor Study Group

Y. Fujii, Kiyoshi Saito, K. Ogasawara, 2021, International Journal of Clinical Oncology.

Opening the ventricle during surgery diminishes survival among patients with newly diagnosed glioblastoma treated with carmustine wafers: a multi-center retrospective study

K. Ogasawara, T. Tominaga, S. Nomura, 2017, Journal of Neuro-Oncology.

Treatment of ruptured spontaneous saccular aneurysm in the central artery of the middle cerebral artery using bypass surgery combined with trapping - case report - .

K. Ogasawara, Y. Otawara, A. Ogawa, 2007, Neurologia medico-chirurgica.

Revascularization and Parent Artery Occlusion for Giant Internal Carotid Artery Aneurysms in the Intracavernous Portion Using Intraoperative Monitoring of Cerebral Hemodynamics

K. Ogasawara, Y. Otawara, A. Ogawa, 2006, Neurosurgery.

Cerebral Hyperperfusion Following Carotid Endarterectomy : A Review

Takashi Inoue, K. Ogasawara, A. Ogawa, 2005 .

Reconstructive Surgery for Occlusive Disease of Extracranial Vertebral Artery

K. Ogasawara, A. Ogawa, 2002 .

Early post-ischemic hyperemia on transcranial cerebral oxygen saturation monitoring in carotid endarterectomy is associated with severity of cerebral ischemic insult during carotid artery clamping

Kenji Yoshida, Akira Ogawa, Kuniaki Ogasawara, 2009, Neurological research.

Improvement in gait function after carotid endarterectomy is associated with postoperative recovery in perfusion and neurotransmitter receptor function in the motor-related cerebral cortex: a 123I-iomazenil SPECT study

K. Ogasawara, S. Fujiwara, Masakazu Kobayashi, 2020, Nuclear medicine communications.

Surgical Repair Under Intraoperative Monitoring and Blood Pressure Control for Symptomatic Thrombosed Aneurysm in the Cervical Internal Carotid Artery: A Case Report

K. Ogasawara, A. Ogawa, Masakazu Kobayashi, 2012 .

Occurrence of Cerebrovascular Diseases Decreased after the Great East Japan Earthquake and Tsunami of 2011

K. Ogasawara, K. Tanno, K. Sakata, 2020, Cerebrovascular Diseases Extra.

Primary plasmacytoma in the cerebellum: A case report and literature review.

K. Ogasawara, T. Sugai, S. Ito, 2020, World neurosurgery.

Crossed Cerebellar Tracer Uptake on Acute-Stage 123I-Iomazenil SPECT Imaging Predicts 3-Month Functional Outcome in Patients With Nonfatal Hypertensive Putaminal or Thalamic Hemorrhage

K. Ogasawara, S. Fujiwara, Masakazu Kobayashi, 2018, Clinical nuclear medicine.

SPECT imaging predicts 3-month functional outcome in patients with non-fatal hypertensive putaminal or thalamic hemorrhage

Yoshitaka, K. Ogasawara, S. Fujiwara, 2018 .

Mechanical and surface properties of Yasargil Phynox aneurysm clips after long-term implantation in a patient with cerebral aneurysm

Kouich Watanabe, H. Kashimura, K. Ogasawara, 2009, Neurosurgical Review.

Magnetic resonance imaging in patients with cerebral hyperperfusion and cognitive impairment after carotid endarterectomy.

Takashi Inoue, K. Ogasawara, Y. Otawara, 2008, Journal of neurosurgery.

Symptomatic occlusion at the origin of the vertebral artery treated using external carotid artery-cervical vertebral artery bypass with interposed saphenous vein graft.

H. Kashimura, K. Ogasawara, A. Ogawa, 2008, Surgical neurology.

Susceptibility of T max to Tracer Delay on Perfusion Analysis: Quantitative Evaluation of Various Deconvolution Algorithms Using Digital Phantoms

L. Østergaard, H. Shirato, K. Ogasawara, 2011, Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism.

Vascular reconstruction using interposition of saphenous vein graft for symptomatic stenosis at the extradural-intradural junction of the vertebral artery. Case report.

K. Ogasawara, A. Ogawa, H. Konno, 2005, Surgical neurology.

A case of internal carotid artery stenosis with massive influx of contrast material into carotid plaque on contrast-enhanced ultrasound

K. Ogasawara, J. Hitomi, Masakazu Kobayashi, 2016 .

Balloon-hooking technique for stabilizing a guiding catheter in tortuous supra-aortic vessel: A case report

J. Yoshida, H. Kashimura, K. Ogasawara, 2022, Radiology case reports.

Cerebral blood flow imaging in arteriovenous malformation complicated by normal perfusion pressure breakthrough.

K. Ogasawara, Y. Otawara, A. Ogawa, 2001, Surgical neurology.

Revascularization and resection for ruptured large aneurysm of distal middle cerebral artery in a 9-year-old boy

K. Ogasawara, T. Sugai, N. Uesugi, 2021, Japanese Journal of Stroke.

Posterior inferior cerebellar artery dissection.

K. Ogasawara, Y. Otawara, Y. Kubo, 2009, Journal of neurosurgery.

Associations Between Adherence to Evidence-Based, Stroke Quality Indicators and Outcomes of Acute Reperfusion Therapy

K. Ogasawara, K. Iihara, T. Kitazono, 2022, Stroke.

Treating a Ruptured Fusiform Aneurysm of the Posterior Inferior Cerebellar Artery (PICA) using PICA-PICA Anastomosis combined with Trapping: A Case Report

H. Kashimura, K. Ogasawara, A. Ogawa, 2010 .

Preoperative visualization of the marginal tentorial artery as an unusual collateral pathway in a patient with symptomatic bilateral vertebral artery occlusion undergoing arterial bypass surgery: A 7.0-T magnetic resonance imaging study

K. Ogasawara, M. Sasaki, Yuiko Sato, 2014, Surgical neurology international.

Clinical Characteristics of Transient Ischemic Attack Patients with Atrial Fibrillation: Analyses of a Multicenter Retrospective Study

K. Ogasawara, K. Iihara, S. Uchiyama, 2015, Cerebrovascular Diseases Extra.

Characteristics of Transient Ischemic Attack Patients with Atrial Fibrillation : Analyses of a Multicenter Retrospective Study

K. Ogasawara, K. Iihara, S. Uchiyama, 2015 .

Impact of the Intracranial Course of Internal Carotid Artery on Optimal Surgical Approach for Posterior Communicating Artery Aneurysms.

H. Kashimura, K. Ogasawara, S. Fujiwara, 2019, World neurosurgery.

Changes in cognitive function after carotid endarterectomy in older patients: comparison with younger patients.

K. Ogasawara, A. Ogawa, Masakazu Kobayashi, 2013, Neurologia medico-chirurgica.

Rapid development of an intranidal aneurysm with perifocal brain edema in an unruptured cerebral arteriovenous malformation. Case report.

T. Yoshimoto, A. Akabane, H. Jokura, 2002, Journal of neurosurgery.

Association between Milk Intake and Incident Stroke among Japanese Community Dwellers: The Iwate-KENCO Study

K. Ogasawara, A. Okayama, M. Tsubota-Utsugi, 2021, Nutrients.

Primary Cranial Vault Lymphoma Extending between Subcutaneous Tissue and Brain Parenchyma without Skull Destruction after Mild Head Trauma: A Case Report and Literature Review

K. Ogasawara, T. Sugai, T. Beppu, 2021, Case Reports in Oncology.

Long-term outcomes, including the survival rate and period to death, in patients over 80 years old after ruptured cerebral aneurysm clipping.

H. Kashimura, K. Ogasawara, S. Fujiwara, 2022, Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association.

High-flow bypass and wrap-clipping for ruptured blood blister-like aneurysm of the internal carotid artery using intraoperative monitoring of cerebral hemodynamics

K. Ogasawara, A. Ogawa, Kenji Yoshida, 2015, Vascular health and risk management.

Neural Damage Caused by Cerebral Hyperperfusion after Arterial Bypass Surgery in a Patient with Moyamoya Disease: Case Report

Takashi Inoue, K. Ogasawara, A. Ogawa, 2005, Neurosurgery.

Cerebral Hyperperfusion Syndrome following Arterial Bypass Surgery for Chronic Cerebrovascular Occlusive Disease( Current Strategies of Extracranial-Intracranial Bypass Surgery)

K. Ogasawara, 2008 .

Cerebral protection during retrograde brachiocephalic artery stenting using a single filter and increased subclavian steal phenomenon: illustrative case

H. Kashimura, K. Ogasawara, Y. Akamatsu, 2022, Journal of neurosurgery. Case lessons.

Lipomatous Meningioma With Concomitant Acute Subdural Hematoma

H. Kashimura, K. Ogasawara, H. Arai, 2008 .

Molecular Features and Prognostic Factors of Pleomorphic Xanthoastrocytoma: A Collaborative Investigation of the Tohoku Brain Tumor Study Group

Y. Fujii, Kiyoshi Saito, K. Ogasawara, 2020, Neurologia medico-chirurgica.

Periprocedural Evaluation and Management against Cerebral Hyperperfusion Syndrome after Carotid Artery Stenting in Japan: A Nationwide Questionnaire Survey

K. Ogasawara, K. Iihara, K. Sugiu, 2017 .

An Acute Spontaneous Subdural Hematoma observed with Angiographic Extravasation of Contrast Medium : A Case Report

K. Ogasawara, A. Ogawa, K. Kuroda, 2004 .

Application of brain SPECT for stroke: past and future

K. Ogasawara, 2008 .

Delayed Cerebral Hyperperfusion Syndrome Caused by Prolonged Impairment of Cerebrovascular Autoregulation after Carotid Endarterectomy: Case Report

Takashi Inoue, K. Ogasawara, A. Ogawa, 2004, Neurosurgery.

A Case of Migraine with Cerebral Infarction in the Anterior Cerebral Artery Territory

K. Ogasawara, A. Ogawa, Mikio Watanabe, 2003 .

Transient hyperemia immediately after rapid decompression of chronic subdural hematoma.

T. Yoshimoto, K. Ogasawara, K. Koshu, 2000, Neurosurgery.

Development of cerebral microbleeds and its impact on cognitive function in adult patients receiving medical management alone for ischemic moyamoya disease: supplementary analysis of a 5-year prospective cohort

K. Ogasawara, S. Fujiwara, Masakazu Kobayashi, 2022, Neurological research.

Ruptured cerebral fusiform aneurysm with mucopolysaccharide deposits in the tunica media in a patient with Marfan syndrome.

K. Ogasawara, A. Ogawa, A. Kurose, 2009, Journal of neurosurgery.

Influence of the Great East Japan Earthquake and Tsunami 2011 on Occurrence of Cerebrovascular Diseases in Iwate, Japan

K. Ogasawara, A. Ogawa, K. Tanno, 2013, Stroke.

Utility of manual venous compression during transvenous Onyx injection for a scalp arteriovenous fistula: illustrative case

H. Kashimura, K. Ogasawara, Y. Akamatsu, 2022, Journal of neurosurgery. Case lessons.

Endovascular intervention for bilateral paramedian thalamic stroke due to occlusion of the unilateral P1 segment of the posterior cerebral artery: illustrative cases

J. Yoshida, H. Kashimura, K. Ogasawara, 2022, Journal of neurosurgery. Case lessons.

Malignant Intracranial Meningioma With Spinal Metastasis

H. Kashimura, K. Ogasawara, H. Arai, 2009 .

Malignant intracranial meningioma with spinal metastasis--case report.

H. Kashimura, K. Ogasawara, H. Arai, 2009, Neurologia medico-chirurgica.

Drag-out technique using a large balloon fixed with an aspiration catheter for retrieving residual thrombus on the wall of the superior sagittal sinus: illustrative case

J. Yoshida, H. Kashimura, K. Ogasawara, 2022, Journal of neurosurgery. Case lessons.

Impaired neuronal integrity in traumatic brain injury detected by 123I-iomazenil single photon emission computed tomography and MRI

J. Hatazawa, H. Kato, E. Mori, 2022, Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism.

Prediction of cerebral hyperperfusion following carotid endarterectomy using intravoxel incoherent motion magnetic resonance imaging.

K. Ogasawara, S. Fujiwara, M. Sasaki, 2022, Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association.

Standardized Prevalence Ratios for Atrial Fibrillation in Adult Dialysis Patients in Japan.

K. Ogasawara, Y. Morino, T. Okamura, 2016, Journal of epidemiology.

The Influence of Young Age on Difficulties in the Surgical Resection of Carotid Body Tumors

K. Ogasawara, K. Shiga, Kenji Yoshida, 2021, Cancers.

Effect of calcium antagonist on cerebral blood flow and oxygen metabolism in patients with hypertension and chronic major cerebral artery occlusion: a positron emission tomography study

K. Ogasawara, A. Ogawa, S. Yasuda, 2003, Nuclear medicine communications.

Qualitative versus quantitative assessment of cerebrovascular reactivity to acetazolamide using iodine-123-N-isopropyl-p-iodoamphetamine SPECT in patients with unilateral major cerebral artery occlusive disease.

Takashi Inoue, K. Ogasawara, A. Ogawa, 2003, AJNR. American journal of neuroradiology.

Adverse effects of pre-existing cerebral small vessel disease on cognitive improvement after carotid endarterectomy

J. Yoshida, F. Yamashita, K. Ogasawara, 2019, International journal of stroke : official journal of the International Stroke Society.

Measurement of fractional anisotropy using diffusion tensor MRI in supratentorial astrocytic tumors

Hiroyuki Kabasawa, Takashi Inoue, Akira Ogawa, 2003, Journal of Neuro-Oncology.

Preoperative Evaluation of Neural Tracts by Use of Three-dimensional Anisotropy Contrast Imaging in a Patient with Brainstem Cavernous Angioma: Technical Case Report

H. Kashimura, Takashi Inoue, K. Ogasawara, 2003 .

Pontine Cavernous Angioma Resected using the Subtemporal, Anterior Transpetrosal Approach Determined Using Three-dimensional Anisotropy Contrast Imaging: Technical Case Report

H. Kashimura, Takashi Inoue, K. Ogasawara, 2006, Neurosurgery.

Wrap-clipping with polytetrafluoroethylene for ruptured blisterlike aneurysms of the internal carotid artery. Technical note.

K. Ogasawara, Y. Otawara, A. Ogawa, 2006, Journal of neurosurgery.

Diffusion of Chromium in α-Titanium and its Alloys

K. Ogasawara, H. Nakajima, M. Koiwa, 1990 .

Postoperative hyperperfusion syndrome in elderly patients with chronic subdural hematoma.

T. Yoshimoto, K. Ogasawara, M. Suzuki, 2000, Surgical neurology.

Spinal Cord Stimulation for a Patient with Lower Extremity Pain due to Multiple Nerve Root Tumor associated with Neurofibromatosis Type 1

K. Ogasawara, A. Ogawa, Y. Nishikawa, 2016 .

Change of Oxygen Pressure in Glioblastoma Tissue Under Various Conditions

Akira Ogawa, Kuniaki Ogasawara, Takaaki Beppu, 2002, Journal of Neuro-Oncology.

[A case of malignant peripheral nerve sheath tumor originating from the cervical vagus nerve].

K. Ogasawara, A. Ogawa, A. Kurose, 2002, No shinkei geka. Neurological surgery.

Genome-wide identification of inter-individually variable DNA methylation sites improves the efficacy of epigenetic association studies

J. Yasuda, M. Nagasaki, K. Ogasawara, 2017, npj Genomic Medicine.

Genome-wide meta-analysis in Japanese populations identifies novel variants at the TMC6–TMC8 and SIX3–SIX2 loci associated with HbA1c

K. Ogasawara, J. Hitomi, A. Hozawa, 2017, Scientific Reports.

Impacts on Histological Features and 11C-Methyl-L-methionine Uptake After “One-Shot” Administration with Bevacizumab Before Surgery in Newly Diagnosed Glioblastoma☆

K. Ogasawara, T. Sugai, K. Terasaki, 2019, Translational oncology.

A Phase II Study of Radiotherapy after Hyperbaric Oxygenation Combined with Interferon-beta and Nimustine Hydrochloride to Treat Supratentorial Malignant Gliomas

K. Ogasawara, H. Arai, A. Ogawa, 2004, Journal of Neuro-Oncology.

Plasma B-type natriuretic peptide is useful for cardiovascular risk assessment in community-based diabetes subjects: comparison with albuminuria.

K. Ogasawara, A. Ogawa, A. Okayama, 2012, International heart journal.

Low-grade albuminuria and incidence of cardiovascular disease and all-cause mortality in nondiabetic and normotensive individuals

K. Ogasawara, A. Okayama, K. Tanno, 2016, Journal of hypertension.

Comparison of predictability of future cardiovascular events between chronic kidney disease (CKD) stage based on CKD epidemiology collaboration equation and that based on modification of diet in renal disease equation in the Japanese general population--Iwate KENCO Study.

K. Ogasawara, A. Ogawa, T. Fujioka, 2013, Circulation Journal.

The Effect of 3.0-tesla Magnetic Resonance Imaging on Various Pressure-programmable Shunt Valves

Takashi Inoue, K. Ogasawara, A. Ogawa, 2006 .

Effect of 3-tesla magnetic resonance imaging on various pressure programmable shunt valves.

Takashi Inoue, K. Ogasawara, A. Ogawa, 2005, Journal of Neurosurgery.

Camurati-Engelmann disease combined with transethmoidal meningoencephalocele: illustrative case

K. Ogasawara, T. Wada, Jun-ichi Nomura, 2022, Journal of Neurosurgery: Case Lessons.

Idiopathic Spinal Cord Herniation Surgery causing Brown-Sequard Syndrome: A Case Report

K. Ogasawara, A. Ogawa, A. Sugawara, 2010 .

Local elevation of the anti-inflammatory interleukin-10 in the pathogenesis of chronic subdural hematoma

K. Ogasawara, A. Ogawa, K. Kuroda, 2006, Neurosurgical Review.

Surgical Results using only Posterior Decompression for Lumbar Canal Stenosis with Lumbar Degenerative Spondylolisthesis( Topics of Therapy for Spine Surgery)

K. Ogasawara, A. Ogawa, A. Sugawara, 2012 .

[A case report of sphenoidal encephalocele presenting with cerebral spinal fluid rhinorrhea].

K. Ogasawara, Y. Otawara, A. Ogawa, 2004, No shinkei geka. Neurological surgery.

Assessment of damage to cerebral white matter fiber in the subacute phase after carbon monoxide poisoning using fractional anisotropy in diffusion tensor imaging

K. Ogasawara, S. Fujiwara, M. Sasaki, 2010, Neuroradiology.

Evaluation of the fitting process in diffusion MRI analysis using digital phantom of the human brain

D. Le Bihan, K. Ogasawara, A. Ogawa, 2014, 2014 World Automation Congress (WAC).

of the human brain

K. Ogasawara, A. Ogawa, S. Fujiwara, 2014 .

Genome-wide analysis of polymorphism × sodium interaction effect on blood pressure identifies a novel 3′-BCL11B gene desert locus

K. Ogasawara, J. Hitomi, Y. Sutoh, 2018, Scientific Reports.

Study Profile of the Tohoku Medical Megabank Community-Based Cohort Study

K. Kinoshita, S. Nishizuka, M. Kikuya, 2020, Journal of epidemiology.

Genome-wide meta-analysis in Japanese populations identifies novel variants at the TMC6–TMC8 and SIX3–SIX2 loci associated with HbA1c

K. Ogasawara, G. Tamiya, J. Hitomi, 2017, Scientific Reports.

Genome-wide identification of inter-individually variable DNA methylation sites improves the efficacy of epigenetic association studies

K. Kinoshita, J. Yasuda, M. Nagasaki, 2017, npj Genomic Medicine.

Genetic Predisposition to Ischemic Stroke

Y. Kamatani, K. Matsuda, M. Kubo, 2017, Stroke.

Relative and absolute risks of all-cause and cause-specific deaths attributable to atrial fibrillation in middle-aged and elderly community dwellers.

K. Ogasawara, A. Ogawa, Y. Morino, 2015, International journal of cardiology.

Plasma B-type Natriuretic Peptide as a Predictor of Cardiovascular Events in Subjects with Atrial Fibrillation: A Community-Based Study

K. Ogasawara, A. Okayama, K. Tanno, 2013, PloS one.

Comparing intracerebral hemorrhages associated with direct oral anticoagulants or warfarin

S. Matsuda, K. Ogasawara, K. Iihara, 2018, Neurology.

Detection of gene amplification and deletion in high-grade gliomas using a genome DNA microarray (GenoSensor Array 300)

K. Ogasawara, H. Arai, T. Beppu, 2006, Brain Tumor Pathology.

Intratumoral Hemorrhage in Acoustic Neurinoma after Gamma Knife Therapy : A Case Report

K. Ogasawara, H. Arai, A. Ogawa, 2005 .

Utility of arterial spin labeling for objective assessment of intratumoral microvessels in diffuse hemispheric glioma, H3 G34R-mutant: A case report and literature review

K. Ogasawara, A. Kurose, T. Beppu, 2022, Radiology case reports.

Spontaneous C1 anterior arch fracture as a postoperative complication of foramen magnum decompression for Chiari malformation type 1

K. Ogasawara, A. Sugawara, J. Mizuno, 2011, Surgical neurology international.

Guidelines for Intravenous Thrombolysis (Recombinant Tissue-type Plasminogen Activator), the Third Edition, March 2019: A Guideline from the Japan Stroke Society

T. Iwama, K. Ogasawara, M. Koga, 2019, Neurologia medico-chirurgica.

An intraorbital arteriovenous fistula presenting with impaired extraocular movement following a provocation test at the third segment of the ophthalmic artery.

K. Ogasawara, Y. Matsumoto, Y. Akamatsu, 2019, World neurosurgery.

Choice of posterior subtemporal transtentorial approach for tumor resection in deep anteromedial superior cerebellum.

H. Kashimura, K. Ogasawara, A. Ogawa, 2009, Neurologia medico-chirurgica.

Meningioma in the posterior fossa without dural attachment.

K. Ogasawara, H. Arai, A. Ogawa, 2007, Neurologia medico-chirurgica.

[A case of the development of cavum vergae after head trauma].

K. Ogasawara, A. Ogawa, K. Kuroda, 2003, No shinkei geka. Neurological surgery.

Suprasellar Ectopic Pituitary Adenoma presented with Nasal Hemianopia : A Case Report

K. Ogasawara, H. Arai, A. Ogawa, 2003 .

Fractional anisotropy value by diffusion tensor magnetic resonance imaging as a predictor of cell density and proliferation activity of glioblastomas.

Hiroyuki Kabasawa, Takashi Inoue, Akira Ogawa, 2005, Surgical neurology.

Pretreatment with the Free Radical Scavenger Edaravone Prevents Cerebral Hyperperfusion after Carotid Endarterectomy

Takashi Inoue, K. Ogasawara, A. Ogawa, 2004, Neurosurgery.

Diversity of DNA damage response of astrocytes and glioblastoma cell lines with various p53 status to treatment with etoposide and temozolomide

Z. Darżynkiewicz, F. Traganos, K. Ogasawara, 2009, Cancer biology & therapy.

Diffusion tensor imaging for preoperative evaluation of tumor grade in gliomas

Hiroyuki Kabasawa, Takashi Inoue, Akira Ogawa, 2005, Clinical Neurology and Neurosurgery.

Reliability of cobalt-chromium alloy aneurysm clips after long-term implantations in patients with cerebral aneurysms.

Kouich Watanabe, K. Ogasawara, Y. Otawara, 2006, Journal of neurosurgery.

Mechanical characteristics and surface elemental composition of a Yasargil titanium aneurysm clip after long-term implantation.

Kouich Watanabe, H. Kashimura, K. Ogasawara, 2010, Journal of neurosurgery.

Direct relief of levodopa-induced dyskinesia by stimulation in the area above the subthalamic nucleus in a patient with Parkinson's disease--case report.

Y. Katayama, K. Ogasawara, A. Ogawa, 2010, Neurologia medico-chirurgica.

Unusual growth pattern of a meningioma

H. Kashimura, K. Ogasawara, A. Kurose, 2012, Surgical neurology international.

Three-dimensional anisotropy contrast imaging of pontine gliomas: 2 case reports.

H. Kashimura, Takashi Inoue, K. Ogasawara, 2007, Surgical neurology.

Treatment outcomes in glioblastoma patients aged 76 years or older: a multicenter retrospective cohort study

Y. Fujii, Kiyoshi Saito, K. Ogasawara, 2013, Journal of Neuro-Oncology.

Intracranial hemorrhage associated with cerebral hyperperfusion syndrome following carotid endarterectomy and carotid artery stenting: retrospective review of 4494 patients.

K. Ogasawara, A. Ogawa, K. Iihara, 2007, Journal of neurosurgery.

Early onset of PRES in a patient with a subarachnoid haemorrhage due to a ruptured intracranial aneurysm

H. Kashimura, K. Ogasawara, T. Murakami, 2014, British journal of neurosurgery.

Desmoplastic infantile astrocytoma and characteristics of the accompanying cyst. Case report.

K. Ogasawara, A. Ogawa, N. Uesugi, 2008, Journal of neurosurgery. Pediatrics.

Prediction of malignancy grading using computed tomography perfusion imaging in nonenhancing supratentorial gliomas

H. Kashimura, K. Ogasawara, A. Ogawa, 2011, Journal of Neuro-Oncology.

Three-dimensional anisotropy contrast imaging of gliomatosis cerebri: two case reports.

Takashi Inoue, K. Ogasawara, A. Ogawa, 2004, Surgical neurology.

Effect of combined Japanese traditional medicines, keishibukuryogan and jidabokuippo, on postoperative soft tissue swelling in adult patients undergoing revascularization surgery for ischemic moyamoya disease: A comparison of two prospective cohort studies

K. Ogasawara, S. Fujiwara, Masakazu Kobayashi, 2022, Traditional & Kampo Medicine.

Endovascular embolization and needle aspiration of a life-threatening cervical hematoma due to a neurofibromatosis type 1-associated arteriovenous fistula: illustrative case.

H. Kashimura, K. Ogasawara, Y. Akamatsu, 2023, Journal of Neurosurgery: Case Lessons.

Recovery of cortical neurotransmitter receptor function and its impact on cognitive improvement after indirect revascularization surgery alone for adult patients with ischemic moyamoya disease: 123I-iomazenil single-photon emission computed tomography study.

K. Ogasawara, S. Fujiwara, Masakazu Kobayashi, 2022, World neurosurgery.

Long-Term Cognitive Changes after Revascularization Surgery in Adult Patients with Ischemic Moyamoya Disease

K. Ogasawara, S. Uchida, S. Fujiwara, 2021, Cerebrovascular Diseases Extra.

Elevated blood pressure at the first measurement predicts cardiovascular disease independently from the subsequent second reading in men, but not in women

K. Ogasawara, A. Ogawa, A. Okayama, 2015, Clinical and experimental hypertension.

Comparison of Effects between Clopidogrel and Cilostazol on Cerebral Perfusion in Nonsurgical Adult Patients with Symptomatically Ischemic Moyamoya Disease: Subanalysis of a Prospective Cohort.

J. Yoshida, K. Ogasawara, S. Fujiwara, 2018, Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association.

Preoperative brain temperature imaging on proton magnetic resonance spectroscopy predicts hemispheric ischemia during carotid endarterectomy for unilateral carotid stenosis with inadequate collateral blood flow

K. Ogasawara, S. Fujiwara, M. Sasaki, 2018, Neurological research.

Apparent brain temperature imaging with multi-voxel proton magnetic resonance spectroscopy compared with cerebral blood flow and metabolism imaging on positron emission tomography in patients with unilateral chronic major cerebral artery steno-occlusive disease

K. Ogasawara, S. Fujiwara, M. Sasaki, 2017, Neuroradiology.

Intraoperative Microemboli and Low Middle Cerebral Artery Blood Flow Velocity Are Additive in Predicting Development of Cerebral Ischemic Events After Carotid Endarterectomy

K. Ogasawara, Y. Otawara, A. Ogawa, 2008, Stroke.

Brain single-photon emission CT studies using 99mTc-HMPAO and 99mTc-ECD early after recanalization by local intraarterial thrombolysis in patients with acute embolic middle cerebral artery occlusion.

T. Yoshimoto, K. Ogasawara, A. Ogawa, 2001, AJNR. American journal of neuroradiology.

Effects of Extracranial–Intracranial Bypass for Patients With Hemorrhagic Moyamoya Disease: Results of the Japan Adult Moyamoya Trial

S. Kuroda, H. Nakase, H. Fukuyama, 2014, Stroke.

Features of patients with transient monocular blindness: a multicenter retrospective study in Japan.

K. Ogasawara, K. Iihara, S. Uchiyama, 2014, Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association.

Evaluation of Lenticulostriate Arteries Changes by 7 T Magnetic Resonance Angiography in Type 2 Diabetes

K. Ogasawara, M. Sasaki, Hiroyuki Kameda, 2018, Journal of atherosclerosis and thrombosis.

Transcranial Regional Cerebral Oxygen Saturation Monitoring during Carotid Endarterectomy as a Predictor of Postoperative Hyperperfusion

Takashi Inoue, K. Ogasawara, A. Ogawa, 2003, Neurosurgery.

[A case of multiple cerebral infarction accompanied by a cor triatriatum].

K. Ogasawara, A. Ogawa, H. Konno, 2004, No shinkei geka. Neurological surgery.

Accuracy and reliability assessment of CT and MR perfusion analysis software using a digital phantom.

Hiroki Shirato, Leif Østergaard, Max Wintermark, 2013, Radiology.

Two-Year Clinical, Cerebral Hemodynamic, and Cognitive Outcomes of Adult Patients Undergoing Medication Alone for Symptomatically Ischemic Moyamoya Disease Without Cerebral Misery Perfusion: A Prospective Cohort Study.

K. Ogasawara, Masakazu Kobayashi, K. Terasaki, 2018, Neurosurgery.

Risk of stroke and heart failure attributable to atrial fibrillation in middle-aged and elderly people: Results from a five-year prospective cohort study of Japanese community dwellers

K. Ogasawara, Y. Morino, T. Okamura, 2017, Journal of epidemiology.

Feasibility of IVIM parameters from diffusion-weighted imaging at 11.7T MRI for detecting ischemic changes in common carotid artery occlusion rats

K. Ogasawara, S. Fujiwara, Y. Akamatsu, 2020, Scientific Reports.

Trapping and vascular reconstruction for ruptured fusiform aneurysm in the proximal A1 segment of the anterior cerebral artery.

H. Kashimura, K. Ogasawara, A. Ogawa, 2006, Neurologia medico-chirurgica.

The Influence of Age on the Outcomes of Traumatic Brain Injury: Findings from a Japanese Nationwide Survey (J-ASPECT Study-Traumatic Brain Injury).

K. Hongo, H. Nakase, T. Shono, 2019, World neurosurgery.

Intracranial hemorrhage associated with direct oral anticoagulant after clipping for an unruptured cerebral aneurysm: A report of two cases

H. Kashimura, K. Ogasawara, Y. Akamatsu, 2022, Surgical neurology international.

[123I-Iomazenil Single-Photon Emission Computed Tomography Imaging in a Patient with Mild Traumatic Subdural Hematoma Accompanied by Delayed Transient Aphasia].

J. Yoshida, K. Ogasawara, N. Komoribayashi, 2018, No shinkei geka. Neurological surgery.

Combined surgical and endovascular treatment of an intraorbital arteriovenous fistula drained into a basal vein of Rosenthal: A technical case report.

K. Ogasawara, Y. Matsumoto, Y. Akamatsu, 2020, World neurosurgery.

Cerebral hyperperfusion after carotid endarterectomy is associated with preoperative hemodynamic impairment and intraoperative cerebral ischemia.

Takashi Inoue, Akira Ogawa, Kuniaki Ogasawara, 2006, Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism.

Symptomatic subdural hemorrhage following heart valve surgery: a retrospective cohort study.

K. Ogasawara, S. Fujiwara, Junichi Tsuboi, 2023, Journal of neurosurgery.

Angioscopy-assisted Aneurysm Clipping

T. Yoshimoto, K. Ogasawara, A. Ogawa, 2016 .

Spontaneous slow drainage of epidural hematoma into the subgaleal space through a skull fracture in an infant--case report.

K. Ogasawara, H. Yukawa, Tomohiko Mase, 2011, Neurologia medico-chirurgica.

Combination of early and delayed SPET imaging using technetium-99m ethyl cysteinate dimer immediately after local intra-arterial thrombolysis

T. Yoshimoto, K. Ogasawara, A. Ogawa, 2001, European Journal of Nuclear Medicine.

A Case of Communicating Hydrocephalus without Expansion of Fourth Ventricule related with Chiari Malformation Type I

K. Ogasawara, A. Ogawa, T. Wada, 2007 .

Spontaneous pial single-channel arteriovenous fistulae with angiographically occult small feeding arteries: case report.

K. Ogasawara, A. Ogawa, S. Kakino, 2008, Surgical neurology.

Preoperative Cerebral Hemodynamic Impairment and Reactive Oxygen Species Produced During Carotid Endarterectomy Correlate With Development of Postoperative Cerebral Hyperperfusion

Takashi Inoue, K. Ogasawara, Y. Otawara, 2007, Stroke.

Concentration of malondialdehyde-modified low-density lipoprotein in the jugular bulb during carotid endarterectomy correlates with development of postoperative cognitive impairment.

Takashi Inoue, K. Ogasawara, Y. Otawara, 2007, Neurosurgery.

Cerebral Hyperperfusion after Carotid Endarterectomy is Associated with Preoperative Hemodynamic Impairment and Intraoperative Cerebral Ischemia

Takashi Inoue, K. Ogasawara, A. Ogawa, 2006 .

Rupture of contralateral vertebral artery dissection two years after spontaneous occlusion of ipsilateral vertebral artery dissection: a case report

K. Ogasawara, A. Ogawa, Y. Nishikawa, 2013 .

Treatment of vertebral artery aneurysms with posterior inferior cerebellar artery-posterior inferior cerebellar artery anastomosis combined with parent artery occlusion.

K. Ogasawara, Y. Otawara, A. Ogawa, 2004, Surgical neurology.

PREDICTION OF CEREBRAL HYPERPERFUSION AFTER CAROTID ENDARTERECTOMY USING MIDDLE CEREBRAL ARTERY SIGNAL INTENSITY IN PREOPERATIVE SINGLE‐SLAB 3‐DIMENSIONAL TIME‐OF‐FLIGHT MAGNETIC RESONANCE ANGIOGRAPHY

K. Ogasawara, Y. Otawara, A. Ogawa, 2009, Neurosurgery.

Intentional Hypertension During Dissection of Carotid Arteries in Endarterectomy Prevents Postoperative Development of New Cerebral Ischemic Lesions Caused by Intraoperative Microemboli

K. Ogasawara, A. Ogawa, S. Fujiwara, 2011, Neurosurgery.

Impact of external carotid artery occlusion at declamping of the external and common carotid arteries during carotid endarterectomy on development of new postoperative ischemic cerebral lesions

K. Ogasawara, S. Fujiwara, Masakazu Kobayashi, 2019, Journal of vascular surgery.

Wall Shear Stress and T1 Contrast Ratio Are Associated With Embolic Signals During Carotid Exposure in Endarterectomy

K. Ogasawara, S. Fujiwara, M. Sasaki, 2018, Stroke.

Diagnostic Criteria for Moyamoya Disease - 2021 Revised Version

S. Kuroda, T. Iwama, K. Ogasawara, 2022, Neurologia medico-chirurgica.

Revascularisation surgery improves cognition in adult patients with moyamoya disease

K. Ogasawara, S. Fujiwara, Masakazu Kobayashi, 2019, Journal of Neurology, Neurosurgery, and Psychiatry.

Quantitative measurement of regional cerebrovascular reactivity to acetazolamide using 123I-N-isopropyl-p-iodoamphetamine autoradiography with SPECT: validation study using H2 15O with PET.

Hiroshi Ito, Akira Ogawa, Kuniaki Ogasawara, 2003, Journal of nuclear medicine : official publication, Society of Nuclear Medicine.

De Novo Intracranial Pial Arteriovenous Fistula After Craniotomy

H. Kashimura, K. Ogasawara, Y. Otawara, 2010 .

Prognostic Value of Electrocardiographic Left Ventricular Hypertrophy on Cardiovascular Risk in a Non-Hypertensive Community-Based Population

K. Ogasawara, A. Okayama, K. Tanno, 2018, American journal of hypertension.

Carotid Plaque Characterization Using 3D T1-Weighted MR Imaging with Histopathologic Validation: A Comparison with 2D Technique

K. Ogasawara, J. Hitomi, M. Sasaki, 2015, American Journal of Neuroradiology.

Acetazolamide-Loaded Dynamic 7T MR Quantitative Susceptibility Mapping in Major Cerebral Artery Steno-Occlusive Disease: Comparison with PET

K. Ogasawara, S. Fujiwara, M. Sasaki, 2020, American Journal of Neuroradiology.

Prediction of cerebral hyperperfusion after carotid endarterectomy using cerebral blood volume measured by perfusion-weighted MR imaging compared with single-photon emission CT.

Takashi Inoue, K. Ogasawara, A. Ogawa, 2007, AJNR. American journal of neuroradiology.

Quantitative assessment of cerebral hemodynamics using perfusion-weighted MRI in patients with major cerebral artery occlusive disease: comparison with positron emission tomography.

Takashi Inoue, K. Ogasawara, Y. Kanbara, 2006, Stroke.

National trends in the outcomes of subarachnoid haemorrhage and the prognostic influence of stroke centre capability in Japan: retrospective cohort study

S. Kuroda, K. Nozaki, H. Nakase, 2023, BMJ Open.

Additional prognostic value of electrocardiographic left ventricular hypertrophy in traditional cardiovascular risk assessments in chronic kidney disease.

K. Ogasawara, A. Okayama, K. Tanno, 2020, Journal of hypertension.

Nonconvulsive Status Epilepticus with Transient Focal Hyperperfusion in the Cerebral Hemisphere and Crossed Cerebellar Hypoperfusion on Arterial Spin Labeling MRI

J. Yoshida, K. Ogasawara, T. Beppu, 2019, Japanese Journal of Neurosurgery.

Five-Year Outcomes of Medical Management Alone for Adult Patients with Ischemic Moyamoya Disease without Cerebral Misery Perfusion

K. Ogasawara, S. Fujiwara, Masakazu Kobayashi, 2021, Cerebrovascular Diseases.

Difference in tracer delay-induced effect among deconvolution algorithms in CT perfusion analysis: quantitative evaluation with digital phantoms.

Hiroki Shirato, Satoshi Terae, Shigeru Ehara, 2009, Radiology.

Tracer Delay–Insensitive Algorithm Can Improve Reliability of CT Perfusion Imaging for Cerebrovascular Steno-Occlusive Disease: Comparison with Quantitative Single-Photon Emission CT

M Sasaki, K. Ogasawara, K. Kudo, 2008, American Journal of Neuroradiology.

Ten-Year Cerebrovascular Disease Trend Occurrence by Population-based Stroke Registry in an Aging Japan Local Prefecture.

K. Ogasawara, K. Tanno, K. Sakata, 2019, Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association.

Reduced Hypoxic Tissue and Cognitive Improvement after Revascularization Surgery for Chronic Cerebral Ischemia

Shunrou Fujiwara, Kenji Yoshida, Kuniaki Ogasawara, 2019, Cerebrovascular Diseases.

Mechanisms of cognitive changes after carotid endarterectomy

K. Ogasawara, Yoshitaka Kubo, 2021, Japanese Journal of Stroke.

Comparison of Subjective and Objective Assessments on Improvement in Gait Function after Carotid Endarterectomy

Shunrou Fujiwara, Takahiro Koji, Kuniaki Ogasawara, 2020, Sensors.

Preoperatively reduced cerebrovascular contractile reactivity to hypocapnia by hyperventilation is associated with cerebral hyperperfusion syndrome after arterial bypass surgery for adult patients with cerebral misery perfusion due to ischemic moyamoya disease

J. Yoshida, K. Ogasawara, S. Fujiwara, 2018, Journal of Cerebral Blood Flow and Metabolism.

Post-carotid endarterectomy changes in cerebral glucose metabolism on (18)F-fluorodeoxyglucose positron emission tomography associated with postoperative improvement or impairment in cognitive function.

K. Ogasawara, A. Ogawa, S. Fujiwara, 2015, Journal of neurosurgery.

Hypoxic Viable Tissue in Human Chronic Cerebral Ischemia Because of Unilateral Major Cerebral Artery Steno-Occlusive Disease

K. Ogasawara, Masakazu Kobayashi, K. Terasaki, 2015, Stroke.

Accuracy of Central Benzodiazepine Receptor Binding Potential/Cerebral Blood Flow SPECT Imaging for Detecting Misery Perfusion in Patients With Unilateral Major Cerebral Artery Occlusive Diseases: Comparison With Cerebrovascular Reactivity to Acetazolamide and Cerebral Blood Flow SPECT Imaging

K. Ogasawara, A. Ogawa, S. Fujiwara, 2012, Clinical nuclear medicine.

Improvement and impairment in cognitive function after carotid endarterectomy: comparison of objective and subjective assessments.

Kenji Yoshida, Akira Ogawa, Kuniaki Ogasawara, 2012, Neurologia medico-chirurgica.

Postcarotid Endarterectomy Improvement in Cognition Is Associated with Resolution of Crossed Cerebellar Hypoperfusion and Increase in 123I-Iomazenil Uptake in the Cerebral Cortex: A SPECT Study

Kenji Yoshida, Akira Ogawa, Kuniaki Ogasawara, 2010, Cerebrovascular Diseases.

Prediction and monitoring of cerebral hyperperfusion after carotid endarterectomy by using single-photon emission computerized tomography scanning.

Takashi Inoue, K. Ogasawara, A. Ogawa, 2003, Journal of neurosurgery.

Oxygen extraction fraction measurement using quantitative susceptibility mapping: Comparison with positron emission tomography

Tian Liu, Yi Wang, Kohsuke Kudo, 2016, Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism.

Thrombin inhibitor ameliorates secondary damage in rat brain injury: suppression of inflammatory cells and vimentin-positive astrocytes.

K. Ogasawara, T. Suzuki, T. Sawai, 2000, Journal of neurotrauma.

Exposure of the vertebrobasilar artery junction with traction of the dentate ligament for the treatment of large vertebral artery aneurysms: technical note.

H. Kashimura, K. Ogasawara, A. Ogawa, 2008, Journal of neurosurgery.

Japan Stroke Society Guideline 2021 for the Treatment of Stroke

S. Kuroda, H. Nakase, K. Ogasawara, 2022, International journal of stroke : official journal of the International Stroke Society.

Initially Missed or Delayed Diagnosis of Subarachnoid Hemorrhage: A Nationwide Survey of Contributing Factors and Outcomes in Japan.

Kazumichi Yoshida, K. Ogasawara, A. Ogawa, 2017, Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association.

Lipomatous meningioma with concomitant acute subdural hematoma--case report--.

H. Kashimura, K. Ogasawara, H. Arai, 2008, Neurologia medico-chirurgica.

Noninvasive Assessment of Oxygen Extraction Fraction in Chronic Ischemia Using Quantitative Susceptibility Mapping at 7 Tesla

Kenji Ito, Kohsuke Kudo, Makoto Sasaki, 2017, Stroke.

Cross-Sectional Survey of Workload and Burnout Among Japanese Physicians Working in Stroke Care: The Nationwide Survey of Acute Stroke Care Capacity for Proper Designation of Comprehensive Stroke Center in Japan (J-ASPECT) Study

S. Matsuda, K. Ogasawara, K. Iihara, 2014, Circulation. Cardiovascular quality and outcomes.

Preoperative 3D FSE T1-Weighted MR Plaque Imaging for Severely Stenotic Cervical ICA: Accuracy of Predicting Emboli during Carotid Endarterectomy

K. Ogasawara, S. Fujiwara, M. Sasaki, 2016, International journal of molecular sciences.

Cerebral Hyperperfusion after Revascularization Inhibits Development of Cerebral Ischemic Lesions Due to Artery-to-Artery Emboli during Carotid Exposure in Endarterectomy for Patients with Preoperative Cerebral Hemodynamic Insufficiency: Revisiting the “Impaired Clearance of Emboli” Concept

K. Ogasawara, S. Fujiwara, Masakazu Kobayashi, 2016, International journal of molecular sciences.

Optimal MR Plaque Imaging for Cervical Carotid Artery Stenosis in Predicting the Development of Microembolic Signals during Exposure of Carotid Arteries in Endarterectomy: Comparison of 4 T1-Weighted Imaging Techniques

K. Ogasawara, A. Ogawa, M. Sasaki, 2016, American Journal of Neuroradiology.

Combined Measurement of Cerebral and Cerebellar Blood Flow on Preoperative Brain Perfusion SPECT Imaging Predicts Development of New Cerebral Ischemic Events After Endarterectomy for Symptomatic Unilateral Cervical Carotid Stenosis

K. Ogasawara, T. Wada, K. Terasaki, 2013, Clinical nuclear medicine.

Preoperative Central Benzodiazepine Receptor Binding Potential and Cerebral Blood Flow Images on SPECT Predict Development of New Cerebral Ischemic Events and Cerebral Hyperperfusion After Carotid Endarterectomy

K. Ogasawara, A. Ogawa, S. Fujiwara, 2011, The Journal of Nuclear Medicine.

Preoperative single-slab 3D time-of-flight magnetic resonance angiography predicts development of new cerebral ischemic events after carotid endarterectomy. Clinical article.

K. Ogasawara, Y. Otawara, A. Ogawa, 2009, Journal of neurosurgery.

Predictive value of lipoprotein indices for residual risk of acute myocardial infarction and sudden death in men with low-density lipoprotein cholesterol levels <120 mg/dl.

K. Ogasawara, A. Ogawa, A. Okayama, 2013, The American journal of cardiology.

Endovascular treatment of anastomotic duplicated middle cerebral artery aneurysm: Report of two cases

H. Kashimura, K. Ogasawara, Y. Akamatsu, 2023, Interdisciplinary Neurosurgery.

Effects of EC-IC bypass surgery on cognitive impairment in patients with hemodynamic cerebral ischemia.

Kiyoshi Kuroda, Akira Ogawa, Kuniaki Ogasawara, 2003, Surgical neurology.

Incidence, predictors, and etiology of subsequent ischemic stroke within one year after transient ischemic attack

K. Ogasawara, K. Iihara, S. Uchiyama, 2017, International journal of stroke : official journal of the International Stroke Society.

Significance of postoperative crossed cerebellar hypoperfusion in patients with cerebral hyperperfusion following carotid endarterectomy: SPECT study

K. Ogasawara, Y. Otawara, A. Ogawa, 2008, European Journal of Nuclear Medicine and Molecular Imaging.

Transient crossed cerebellar diaschisis secondary to cerebral hyperperfusion following carotid endarterectomy

Takashi Inoue, K. Ogasawara, A. Ogawa, 2005, Annals of nuclear medicine.

The Coefficient of Variation of Step Time Can Overestimate Gait Abnormality: Test-Retest Reliability of Gait-Related Parameters Obtained with a Tri-Axial Accelerometer in Healthy Subjects

Shunrou Fujiwara, Shinpei Sato, Atsushi Sugawara, 2020, Sensors.

Screening the Single Nucleotide Polymorphisms in Patients with Internal Carotid Artery Stenosis by Oligonucleotide-Based Custom DNA Array

Takashi Inoue, K. Ogasawara, A. Ogawa, 2007, Bioinformatics and biology insights.

Comparison of Three-Dimensional T1-Weighted Magnetic Resonance and Contrast-Enhanced Ultrasound Plaque Images for Severe Stenosis of the Cervical Carotid Artery.

J. Yoshida, K. Ogasawara, S. Fujiwara, 2017, Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association.

Preoperative cervical carotid artery contrast-enhanced ultrasound findings are associated with development of microembolic signals on transcranial Doppler during carotid exposure in endarterectomy.

K. Ogasawara, S. Fujiwara, M. Sasaki, 2017, Atherosclerosis.

A newly designed hydroxyapatite ceramic burr-hole button

H. Kashimura, K. Ogasawara, A. Ogawa, 2010, Vascular health and risk management.

Cognitive Function Before and After Surgery in Patients With Unruptured Intracranial Aneurysm

K. Ogasawara, Y. Otawara, A. Ogawa, 2005, Stroke.

Treatment of ruptured fusiform aneurysm in the posterior cerebral artery with posterior cerebral artery-superior cerebellar artery anastomosis combined with parent artery occlusion: case report.

K. Ogasawara, A. Ogawa, H. Saito, 2006, Surgical neurology.

Subtemporal Approach for Basilar Artery Aneurysm

H. Kashimura, K. Ogasawara, Y. Otawara, 2020, Surgery for Cerebral Stroke.

Early revascularization in a patient with perfusion computed tomography/diffusion-weighted magnetic resonance imaging mismatch secondary to acute vertebral artery occlusion. Case report.

Takashi Inoue, K. Ogasawara, A. Ogawa, 2005, Neurologia medico-chirurgica.

Extent of Flood Damage Increased Cerebrovascular Disease Incidences in Iwate Prefecture after the Great East Japan Earthquake and Tsunami of 2011

K. Ogasawara, A. Ogawa, K. Tanno, 2014, Cerebrovascular Diseases.

Cerebrovascular Reactivity to Acetazolamide and Outcome in Patients With Symptomatic Internal Carotid or Middle Cerebral Artery Occlusion: A Xenon-133 Single-Photon Emission Computed Tomography Study

Takashi Yoshimoto, Akira Ogawa, Kuniaki Ogasawara, 2002, Stroke.

Endovascular Therapy in Ischemic Stroke With Acute Large‐Vessel Occlusion: Recovery by Endovascular Salvage for Cerebral Ultra‐Acute Embolism Japan Registry 2

K. Ogasawara, K. Kitagawa, M. Ezura, 2018, Journal of the American Heart Association.

Contents Vol. 37, 2014

C. Anderson, R. Sacco, C. Marescaux, 2014, Cerebrovascular Diseases.

Influence of hospital capabilities and prehospital time on outcomes of thrombectomy for stroke in Japan from 2013 to 2016

K. Hongo, S. Kuroda, K. Nozaki, 2022, Scientific reports.

Postoperative Changes in Cerebral Metabolites Associated with Cognitive Improvement and Impairment after Carotid Endarterectomy: A 3T Proton MR Spectroscopy Study

K. Ogasawara, A. Ogawa, S. Fujiwara, 2013, American Journal of Neuroradiology.

Postoperative Cortical Neural Loss Associated With Cerebral Hyperperfusion and Cognitive Impairment After Carotid Endarterectomy: 123I-iomazenil SPECT Study

K. Ogasawara, Y. Otawara, A. Ogawa, 2009, Stroke.

Effects of the free radical scavenger, edaravone, on the development of postoperative cognitive impairment in patients undergoing carotid endarterectomy.

Takashi Inoue, K. Ogasawara, A. Ogawa, 2005, Surgical neurology.

Postoperative cerebral hyperperfusion associated with impaired cognitive function in patients undergoing carotid endarterectomy.

Takashi Inoue, K. Ogasawara, A. Ogawa, 2005, Journal of neurosurgery.

Effect of treatment modality on in-hospital outcome in patients with subarachnoid hemorrhage: a nationwide study in Japan (J-ASPECT Study).

S. Matsuda, K. Ogasawara, K. Iihara, 2017, Journal of neurosurgery.

Syringomyelia associated with Chiari I malformation treated with foramen magnum decompression and duraplasty using a polyglycolic acid patch and fibrin glue: a case report.

K. Ogasawara, A. Sugawara, M. Isobe, 2010, Journal of Nippon Medical School = Nippon Ika Daigaku zasshi.

Examination timing and lesion patterns in diffusion-weighted magnetic resonance imaging of patients with classically defined transient ischemic attack.

K. Ogasawara, K. Iihara, S. Uchiyama, 2013, Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association.

CT and MR perfusion can discriminate severe cerebral hypoperfusion from perfusion absence: evaluation of different commercial software packages by using digital phantoms

Leif Østergaard, Soren Christensen, Kohsuke Kudo, 2012, Neuroradiology.

Accuracy of brain perfusion single-photon emission computed tomography for detecting misery perfusion in adult patients with symptomatic ischemic moyamoya disease

J. Yoshida, K. Ogasawara, S. Fujiwara, 2018, Annals of Nuclear Medicine.

A Case of Breast Cancer Metastatic to Intracranial Meningioma

K. Ogasawara, H. Yukawa, N. Kubo, 2012 .

Optimal Brain 99mTc–Ethyl Cysteinate Dimer SPECT Imaging and Analysis to Detect Misery Perfusion on 15O PET Imaging in Patients With Chronic Occlusive Disease of Unilateral Major Cerebral Artery

K. Ogasawara, Masakazu Kobayashi, K. Terasaki, 2017, Clinical nuclear medicine.

Rupture of Vertebral Artery Dissecting Aneurysm after mRNA Anti-COVID-19 Vaccination: A Report of Two Cases

K. Ogasawara, S. Fujiwara, Y. Ogasawara, 2022, NMC case report journal.

Ruptured vertebral artery dissecting aneurysm followed by spontaneous acute occlusion and early recanalization: case report.

K. Ogasawara, Y. Otawara, A. Ogawa, 2005, Neurologia medico-chirurgica.

Cognitive function and anxiety before and after surgery for asymptomatic unruptured intracranial aneurysms in elderly patients.

H. Kashimura, K. Ogasawara, Y. Otawara, 2010, World neurosurgery.

Angiographic disease progression in medically treated adult patients with ischemic moyamoya disease without cerebral misery perfusion: supplementary analysis of a 5-year prospective cohort

K. Ogasawara, S. Fujiwara, Masakazu Kobayashi, 2021, Neurosurgical Review.

Assessment of Impaired Cerebrovascular Reactivity in Chronic Cerebral Ischemia using Intravoxel Incoherent Motion Magnetic Resonance Imaging.

F. Yamashita, K. Ogasawara, M. Sasaki, 2021, Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association.

Preoperative Cerebral Oxygen Extraction Fraction Imaging Generated from 7T MR Quantitative Susceptibility Mapping Predicts Development of Cerebral Hyperperfusion following Carotid Endarterectomy

F. Yamashita, K. Ogasawara, K. Kudo, 2017, American Journal of Neuroradiology.

Small vessel occlusion is a high-risk etiology for early recurrent stroke after transient ischemic attack

K. Ogasawara, K. Iihara, S. Uchiyama, 2019, International Journal of Stroke.

Impact of cerebral blood flow changes due to arterial bypass surgery on cognitive function in adult patients with symptomatic ischemic moyamoya disease.

K. Ogasawara, Masakazu Kobayashi, K. Terasaki, 2019, Journal of neurosurgery.

Prediction of Acute Embolic Stroke Outcome After Local Intraarterial Thrombolysis: Value of Pretreatment and Posttreatment 99mTc-Ethyl Cysteinate Dimer Single Photon Emission Computed Tomography

K. Ogasawara, A. Ogawa, H. Konno, 2000, Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism.

Superb Microvascular Imaging Ultrasound for Cervical Carotid Artery Stenosis for Prediction of the Development of Microembolic Signals on Transcranial Doppler during Carotid Exposure in Endarterectomy

K. Ogasawara, S. Fujiwara, Masakazu Kobayashi, 2021, Cerebrovascular Diseases Extra.

Intra-aneurysmal GDC embolization followed by intrathecal tPA administration for poor-grade basilar tip aneurysm.

K. Ogasawara, M. Ezura, T. Yoshimoto, 1997, Surgical neurology.

Diffusion tensor imaging in patients with major cerebral artery occlusive disease.

Takashi Inoue, K. Ogasawara, A. Ogawa, 2003, Neurologia medico-chirurgica.

Resolution of Hypoxic Tissue in Cerebellar Hemispheres After Arterial Bypass Surgery in a Patient With Symptomatic Bilateral Vertebral Artery Occlusion: A 18F-FRP170 PET Study.

K. Ogasawara, Masakazu Kobayashi, K. Terasaki, 2019, Clinical nuclear medicine.

Clinical trial of carotid artery stenting using dual-layer CASPER stent for carotid endarterectomy in patients at high and normal risk in the Japanese population

T. Terada, K. Ogasawara, K. Iihara, 2020, Journal of NeuroInterventional Surgery.

Utility of three-dimensional anisotropy contrast magnetic resonance axonography for determining condition of the pyramidal tract in glioblastoma patients with hemiparesis

Takashi Inoue, K. Ogasawara, A. Ogawa, 2005, Journal of Neuro-Oncology.

Basilar Artery Embolism complicated with Ovarian Hyperstimulation Syndrome : A Case Report

K. Ogasawara, Y. Otawara, A. Ogawa, 2003 .

Intracranial aneurysm rupture within three days after receiving mRNA anti-COVID-19 vaccination: Three case reports

H. Kashimura, K. Ogasawara, S. Fujiwara, 2022, Surgical neurology international.

Detecting damaged regions of cerebral white matter in the subacute phase after carbon monoxide poisoning using voxel-based analysis with diffusion tensor imaging

K. Ogasawara, S. Fujiwara, M. Sasaki, 2012, Neuroradiology.

Tightrope walking: achieving the best possible balance between better model fit and accurate prediction: response to letter (IJC-D-14-00417).

K. Ogasawara, A. Okayama, M. Ohsawa, 2014, International journal of cardiology.

Changes in periventricular anastomosis after indirect revascularization surgery alone for adult patients with misery perfusion due to ischemic moyamoya disease

K. Ogasawara, S. Fujiwara, Masakazu Kobayashi, 2022, Neurosurgical Review.

Acute Intracranial Hypertension due to Occlusion of the Brachiocephalic Vein in a Patient Undergoing Hemodialysis

H. Kashimura, K. Ogasawara, A. Ogawa, 2005, Cerebrovascular Diseases.

MRI and 11C-methyl-L-methionine PET Differentiate Bevacizumab True Responders After Initiating Therapy for Recurrent Glioblastoma

K. Ogasawara, M. Sasaki, K. Terasaki, 2016, Clinical nuclear medicine.

Clinical and angiographic long-term outcomes of vertebral artery-subclavian artery transposition to treat symptomatic stenosis of vertebral artery origin.

H. Kashimura, K. Ogasawara, A. Ogawa, 2009, Journal of neurosurgery.

Brain Complications during or after Vascular Reconstructive Surgery for CerVical Carotid Artery Stenosis

K. Ogasawara, 2014 .

Cilostazol may improve cognition better than clopidogrel in non-surgical adult patients with ischemic moyamoya disease: subanalysis of a prospective cohort

K. Ogasawara, S. Fujiwara, Masakazu Kobayashi, 2019, Neurological research.

Amino acid concentrations in the blood of the jugular vein and peripheral artery after traumatic brain injury: decreased release of glutamate into the jugular vein in the early phase.

K. Ogasawara, M. Doi, Michiyasu Suzuki, 2002, Journal of neurotrauma.

1H-magnetic resonance spectroscopy indicates damage to cerebral white matter in the subacute phase after CO poisoning

K. Ogasawara, K. Kudo, S. Fujiwara, 2011, Journal of Neurology, Neurosurgery & Psychiatry.

Effect of the addition of ^123I-iomazenil single-photon emission computed tomography to brain perfusion single-photon emission computed tomography on the detection accuracy of misery perfusion in adult patients with ischemic moyamoya disease

K. Ogasawara, S. Fujiwara, Masakazu Kobayashi, 2023, Annals of Nuclear Medicine.

Comparison of early and late images on 123I-iomazenil SPECT with cerebral blood flow and oxygen extraction fraction images on PET in the cerebral cortex of patients with chronic unilateral major cerebral artery occlusive disease

K. Ogasawara, A. Ogawa, S. Fujiwara, 2012, Nuclear medicine communications.

Central Benzodiazepine Receptor Binding Potential and CBF Images on SPECT Correlate with Oxygen Extraction Fraction Images on PET in the Cerebral Cortex with Unilateral Major Cerebral Artery Occlusive Disease

Shunrou Fujiwara, Kenji Yoshida, Hiroki Kuroda, 2011, The Journal of Nuclear Medicine.

Simple Assessment of Cerebral Hemodynamics Using Single-Slab 3D Time-of-Flight MR Angiography in Patients with Cervical Internal Carotid Artery Steno-Occlusive Diseases: Comparison with Quantitative Perfusion Single-Photon Emission CT

Takashi Inoue, K. Ogasawara, Y. Otawara, 2009, American Journal of Neuroradiology.

Use of Cerebrovascular Reactivity in Patients with Symptomatic Major Cerebral Artery Occlusion to Predict 5-Year Outcome: Comparison of Xenon-133 and Iodine-123-IMP Single-Photon Emission Computed Tomography

T. Yoshimoto, K. Ogasawara, A. Ogawa, 2002, Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism.

Endarterectomy for mild cervical carotid artery stenosis in patients with ischemic stroke events refractory to medical treatment.

Takashi Inoue, K. Ogasawara, A. Ogawa, 2008, Neurologia medico-chirurgica.

Brain temperature measured by using proton MR spectroscopy predicts cerebral hyperperfusion after carotid endarterectomy.

Kenji Yoshida, Yoshichika Yoshioka, Kohsuke Kudo, 2010, Radiology.

Brain Temperature Measured Using Proton MR Spectroscopy Detects Cerebral Hemodynamic Impairment in Patients With Unilateral Chronic Major Cerebral Artery Steno-Occlusive Disease: Comparison With Positron Emission Tomography

Takashi Inoue, K. Ogasawara, A. Ogawa, 2009, Stroke.

Relation between brain temperature and white matter damage in subacute carbon monoxide poisoning

K. Ogasawara, A. Ogawa, S. Fujiwara, 2016, Scientific Reports.

Preoperative prediction of cerebral hyperperfusion after carotid endarterectomy using middle cerebral artery signal intensity in 1.5-tesla magnetic resonance angiography followed by cerebrovascular reactivity to acetazolamide using brain perfusion single-photon emission computed tomography

J. Yoshida, K. Ogasawara, A. Ogawa, 2016, Neurological Research.

Reduction in amyloid β deposition on 18F-florbetapir positron emission tomography with correction of cerebral hypoperfusion after endarterectomy for carotid stenosis.

K. Ogasawara, S. Fujiwara, M. Sasaki, 2019, American journal of nuclear medicine and molecular imaging.

Concentration of Matrix Metalloproteinase-9 in the Jugular Bulb during Carotid Endarterectomy Correlates with Severity of Intraoperative Cerebral Ischemia

K. Ogasawara, Y. Otawara, A. Ogawa, 2008, Cerebrovascular Diseases.

Use of magnetic resonance imaging to identify the edge of a dural tear in an infant with growing skull fracture: a case study

K. Ogasawara, S. Fujiwara, Manami Akasaka, 2012, Child's Nervous System.

Quantitative analysis of magnetic resonance imaging susceptibility artifacts caused by neurosurgical biomaterials: comparison of 0.5, 1.5, and 3.0 Tesla magnetic fields.

Makoto Sasaki, Takashi Inoue, Akira Ogawa, 2005, Neurologia medico-chirurgica.

Undifferentiated carcinoma arising from intracranial epidermoid cyst

K. Ogasawara, T. Sugai, N. Uesugi, 2021, Pathology international.

Ruptured Aneurysm at the Origin of an Anomalous Callosomarginal Artery Arising from the A1 Segment of the Anterior Cerebral Artery―A Case Report―

K. Ogasawara, H. Konno, Jun-ichi Nomura, 2022, NMC case report journal.

Aneurysm of the A1 Segment of the Anterior Cerebral Artery Associated with the Persistent Primitive Olfactory Artery.

H. Kashimura, K. Ogasawara, Yuiko Sato, 2015, World neurosurgery.

A Case of Bow Hunter^|^apos;s Syndrome presenting after Anterior Cervical Fusion

K. Ogasawara, A. Ogawa, A. Sugawara, 2014 .

Proton magnetic resonance spectroscopy and diffusion-weighted imaging of tumefactive demyelinating plaque.

H. Kashimura, K. Ogasawara, S. Fujiwara, 2009, Neurologia medico-chirurgica.

[Endarterectomy for cervical internal carotid artery stenosis accompanied with severe aortic valve stenosis--case report].

Takashi Inoue, K. Ogasawara, A. Ogawa, 2007, Brain and nerve = Shinkei kenkyu no shinpo.

Mechanisms of Cognitive Improvement After Carotid Endarterectomy: Results of an Autopsy

K. Ogasawara, 2023, Clinical Neuroscience Research.

Long-term outcomes of cerebral blood flow and neurotransmitter receptor function on 123I-iomazenil SPECT and of cognitive assessments after parent artery occlusion combined with cerebral revascularization for internal carotid artery aneurysms.

K. Ogasawara, T. Murakami, Kenji Yoshida, 2020, World neurosurgery.

Effects of uncomplicated carotid endarterectomy on cognitive function and brain perfusion in patients with unilateral asymptomatic severe stenosis of the internal carotid artery by comparison with unoperated patients

J. Yoshida, K. Ogasawara, S. Fujiwara, 2016, Neurological research.

Combination of Preoperative Cerebral Blood Flow and 123I-Iomazenil SPECT Imaging Predicts Postoperative Cognitive Improvement in Patients Undergoing Uncomplicated Endarterectomy for Unilateral Carotid Stenosis

K. Ogasawara, A. Ogawa, Kenji Yoshida, 2012, Clinical nuclear medicine.

Predicting the consistency of intracranial meningiomas using apparent diffusion coefficient maps derived from preoperative diffusion-weighted imaging.

K. Ogasawara, S. Fujiwara, M. Sasaki, 2020, Journal of neurosurgery.

Intraoperative monitoring of cerebral cortical blood flow and middle cerebral artery pressure as a substitute for preoperative balloon test occlusion in patients with internal carotid artery aneurysms

K. Ogasawara, R. Kondo, Kenji Yoshida, 2018, Acta Neurochirurgica.

Application of fenestrated aneurysm clip for incomplete clamping of the common carotid artery during carotid endarterectomy: technical note.

K. Ogasawara, Y. Otawara, A. Ogawa, 2009, Neurologia medico-chirurgica.

Use of fractional anisotropy value by diffusion tensor MRI for preoperative diagnosis of astrocytic tumors: case report

Takashi Inoue, K. Ogasawara, A. Ogawa, 2004, Journal of Neuro-Oncology.

Anterior Wall Aneurysms of Internal Carotid Artery

T. Yoshimoto, K. Ogasawara, H. Kinouchi, 1997 .

Development and validation of a score for evaluating comprehensive stroke care capabilities: J-ASPECT Study

S. Matsuda, K. Ogasawara, K. Iihara, 2017, BMC Neurology.

Effects of Comprehensive Stroke Care Capabilities on In-Hospital Mortality of Patients with Ischemic and Hemorrhagic Stroke: J-ASPECT Study

S. Matsuda, K. Ishikawa, K. Ogasawara, 2014, PloS one.

Female sex as a risk factor for the growth of asymptomatic unruptured cerebral saccular aneurysms in elderly patients.

H. Kashimura, K. Ogasawara, Y. Otawara, 2014, Journal of neurosurgery.

Accuracy and reliability assessment of CT and MR perfusion analysis software using a digital phantom.

S. Warach, M. Wintermark, L. Østergaard, 2013, Radiology.

Scar formation in the carotid sheath identified during carotid endarterectomy in patients with previous cardiac surgery: significance of history of intraoperative Swan-Ganz catheter insertion. Clinical article.

K. Ogasawara, A. Ogawa, Junichi Tsuboi, 2010, Journal of neurosurgery.

Noninvasive evaluation of collateral blood flow through circle of Willis in cervical carotid stenosis using selective magnetic resonance angiography.

F. Yamashita, K. Ogasawara, M. Sasaki, 2014, Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association.

Intracranial hemorrhage associated with cerebral hyperperfusion syndrome following carotid endarterectomy and carotid artery stenting: retrospective review of 4494 patients.

K. Ogasawara, A. Ogawa, K. Iihara, 2007, Journal of neurosurgery.

Predicting Carotid Plaque Characteristics Using Quantitative Color-Coded T1-Weighted MR Plaque Imaging: Correlation with Carotid Endarterectomy Specimens

K. Ogasawara, T. Takahashi, J. Hitomi, 2014, American Journal of Neuroradiology.

Prediction of Carotid Plaque Characteristics Using Non-Gated MR Imaging: Correlation with Endarterectomy Specimens

K. Ogasawara, J. Hitomi, K. Kudo, 2013, American Journal of Neuroradiology.

Fractional anisotropy in the centrum semiovale as a quantitative indicator of cerebral white matter damage in the subacute phase in patients with carbon monoxide poisoning: correlation with the concentration of myelin basic protein in cerebrospinal fluid

K. Ogasawara, S. Fujiwara, M. Sasaki, 2012, Journal of Neurology.

Arterial Bypass Surgery Using a Spontaneously Formed “Bonnet” Superficial Temporal Artery in a Patient With Symptomatic Common Carotid Artery Occlusion: Case Report

K. Ogasawara, Kenji Yoshida, Kenta Aso, 2010, Neurosurgery.

Postoperative Cortical Neural Loss Associated With Cerebral Hyperperfusion and Cognitive Impairment After Carotid Endarterectomy: 123I-iomazenil SPECT Study

K. Ogasawara, Y. Otawara, A. Ogawa, 2009, Stroke.

Effect of Combination Therapy with the Angiotensin Receptor Blocker Losartan plus Hydrochlorothiazide on Brain Perfusion in Patients with both Hypertension and Cerebral Hemodynamic Impairment due to Symptomatic Chronic Major Cerebral Artery Steno-Occlusive Disease: A SPECT Study

K. Ogasawara, A. Ogawa, K. Terasaki, 2012, Cerebrovascular Diseases.

S. Matsuda, K. Ogasawara, K. Iihara, 2014, Circulation. Cardiovascular quality and outcomes.

Fluid balance management with loop diuretics in patients with aneurysmal subarachnoid hemorrhage treated with clazosentan: A case series

H. Kashimura, K. Ogasawara, S. Fujiwara, 2023, Brain Hemorrhages.

MOYAMOYA DISEASE: CASE REPORT

K. Ogasawara, 2005 .

Significance of the Hemorrhagic Site for Recurrent Bleeding: Prespecified Analysis in the Japan Adult Moyamoya Trial

S. Kuroda, K. Houkin, K. Ogasawara, 2016, Stroke.

Successful carotid stenting of a carotid arterial dissection after straightening the tortuosity using an inflated balloon guiding catheter and the delivery wire of an anchored stent retriever

K. Ogasawara, H. Konno, Yoshiyasu Matsumoto, 2024, Radiology case reports.

Effect of Statin Administration After Onset of Acute Ischemic Stroke With Large Vessel Occlusion: Insights From RESCUE‐Japan Registry 2

K. Ogasawara, K. Kitagawa, M. Ezura, 2020, Journal of the American Heart Association.

K. Ogasawara, A. Ogawa, S. Fujiwara, 2011, The Journal of Nuclear Medicine.

Prediction of Motor Function Outcome after Intracerebral Hemorrhage Using Fractional Anisotropy Calculated from Diffusion Tensor Imaging

Takashi Inoue, K. Ogasawara, Y. Kanbara, 2012, Cerebrovascular Diseases.

Associations Between Adherence to Evidence-Based, Stroke Quality Indicators and Outcomes of Acute Reperfusion Therapy

K. Ogasawara, T. Kitazono, A. Nishimura, 2022, Stroke.

Hypoxic Viable Tissue in Human Chronic Cerebral Ischemia Because of Unilateral Major Cerebral Artery Steno-Occlusive Disease

K. Ogasawara, K. Terasaki, Y. Takai, 2015, Stroke.

Altered carotid plaque signal among different repetition times on T1-weighted magnetic resonance plaque imaging with self-navigated radial-scan technique

K. Ogasawara, J. Hitomi, M. Sasaki, 2010, Neuroradiology.

[Systematic review of complication for proper informed consent (11) STA-MCA bypass surgery].

K. Ogasawara, K. Chida, 2013, No shinkei geka. Neurological surgery.

Consciousness Level and Off‐Hour Admission Affect Discharge Outcome of Acute Stroke Patients: A J‐ASPECT Study

S. Matsuda, K. Ishikawa, K. Ogasawara, 2014, Journal of the American Heart Association.

Association between preoperative white matter hyperintensities and postoperative new ischemic lesions on magnetic resonance imaging in patients with cognitive decline after carotid endarterectomy

K. Ogasawara, S. Fujiwara, T. Koji, 2024, Neurosurgical review.

Delayed development of cerebral atrophy after cerebral hyperperfusion following arterial bypass for adult patients with ischemic moyamoya disease: supplementary analysis of a 5-year prospective cohort

K. Ogasawara, S. Fujiwara, K. Terasaki, 2022, Acta Neurochirurgica.

K. Ogasawara, A. Ogawa, S. Fujiwara, 2015, Journal of neurosurgery.

Quantitative measurement of regional cerebrovascular reactivity to acetazolamide using 123I-N-isopropyl-p-iodoamphetamine autoradiography with SPECT: validation study using H2 15O with PET.

Hiroshi Ito, K. Ogasawara, A. Ogawa, 2003, Journal of nuclear medicine : official publication, Society of Nuclear Medicine.

Detection of misery perfusion in the cerebral hemisphere with chronic unilateral major cerebral artery steno-occlusive disease using crossed cerebellar hypoperfusion: comparison of brain SPECT and PET imaging

K. Ogasawara, A. Ogawa, S. Fujiwara, 2013, European Journal of Nuclear Medicine and Molecular Imaging.

K. Ogasawara, Y. Otawara, A. Ogawa, 2009, Neurosurgery.