P. Schaefer

Iva Petkovska, Walter J Koroshetz, Pamela W Schaefer, 2004, Academic emergency medicine : official journal of the Society for Academic Emergency Medicine.

Regional Ischemic Vulnerability of the Brain to Hypoperfusion: The Need for Location Specific Computed Tomography Perfusion Thresholds in Acute Stroke Patients

Michael H Lev, Pamela W Schaefer, Elkan F Halpern, 2011, Stroke.

A Tale of Two Organ Systems: Imaging review of diseases affecting the thoracic and neurological systems. Part 1.

P. Schaefer, L. Chan, A. Gogna, 2021, Current problems in diagnostic radiology.

Posterior leukoencephalopathy without severe hypertension

F. Buonanno, R. Gonzalez, W. Koroshetz, 1998, Neurology.

Evaluation of Ultrafast Wave-CAIPI 3D FLAIR in the Visualization and Volumetric Estimation of Cerebral White Matter Lesions

Susie Y. Huang, R. Gonzalez, K. Setsompop, 2021, medRxiv.

Conventional MRI and MR Angiography of Stroke

Pamela W. Schaefer, R. Gonzalez, P. Schaefer, 2011 .

Contrast-Enhanced MR Angiography Is Not More Accurate Than Unenhanced 2D Time-of-Flight MR Angiography for Determining ≥70% Internal Carotid Artery Stenosis

R. Gonzalez, P. Schaefer, M. Lev, 2009, American Journal of Neuroradiology.

Time course of lesion development in patients with acute stroke: serial diffusion- and hemodynamic-weighted magnetic resonance imaging.

L H Schwamm, A G Sorensen, F. Buonanno, 1998, Stroke.

Glial tumor grading and outcome prediction using dynamic spin-echo MR susceptibility mapping compared with conventional contrast-enhanced MR: confounding effect of elevated rCBV of oligodendrogliomas [corrected].

Michael H Lev, E. A. Chiocca, Pamela W Schaefer, 2004, AJNR. American journal of neuroradiology.

Ischemic stroke: effects of etiology and patient age on the time course of the core apparent diffusion coefficient.

L H Schwamm, A G Sorensen, R. Gonzalez, 2001, Radiology.

Improved Detection of Skull Metastasis with Diffusion-Weighted MR Imaging

R. Gonzalez, P. Schaefer, J. Henson, 2007, American Journal of Neuroradiology.

MR diffusion imaging in ischemic stroke.

Luca Roccatagliata, Pamela W Schaefer, Steve H Fung, 2011, Neuroimaging clinics of North America.

MRI detection of new hemorrhages: Potential marker of progression in cerebral amyloid angiopathy

Eduard Kraft, Pamela W. Schaefer, Steven M. Greenberg, 1999, Neurology.

Practical Scoring System for the Identification of Patients with Intracerebral Hemorrhage at Highest Risk of Harboring an Underlying Vascular Etiology: The Secondary Intracerebral Hemorrhage Score

R. Gonzalez, P. Schaefer, M. Lev, 2010, American Journal of Neuroradiology.

Ensemble of Convolutional Neural Networks Improves Automated Segmentation of Acute Ischemic Lesions Using Multiparametric Diffusion-Weighted MRI

Ben Glocker, K. Kamnitsas, A. Sorensen, 2019, American Journal of Neuroradiology.

MR perfusion imaging in acute ischemic stroke.

Pamela W Schaefer, Ona Wu, W. Copen, 2011, Neuroimaging clinics of North America.

Imaging of Pituitary Gland, Sella, Parasellar Region

P. Schaefer, J. Lysack, 2008 .

Microgyria in the Distribution of the Middle Cerebral Artery in a Patient With DiGeorge Syndrome

S. Cramer, P. Schaefer, K. Krishnamoorthy, 1996, Journal of child neurology.

Academic Performance-Based Compensation Models.

P. Schaefer, J. Hirsch, W. Mehan, 2019, Journal of the American College of Radiology : JACR.

Sustainable Growth Rate Repealed, MACRA Revealed: Historical Context and Analysis of Recent Changes in Medicare Physician Payment Methodologies

H. Harvey, P. Schaefer, L. Manchikanti, 2016, American Journal of Neuroradiology.

Ischemic stroke.

P. Schaefer, M. Kunst, 2011, Radiologic clinics of North America.

Accelerated Post-contrast Wave-CAIPI T1 SPACE Achieves Equivalent Diagnostic Performance Compared With Standard T1 SPACE for the Detection of Brain Metastases in Clinical 3T MRI

K. Setsompop, S. Cauley, P. Schaefer, 2020, Frontiers in Neurology.

Susceptibility-weighted imaging reveals cerebral microvascular injury in severe COVID-19

E. Brown, R. Gonzalez, M. Frosch, 2021, Journal of the Neurological Sciences.

Frequency of Adequate Contrast Opacification of the Major Intracranial Venous Structures with CT Angiography in the Setting of Intracerebral Hemorrhage: Comparison of 16- and 64-Section CT Angiography Techniques

R. Gonzalez, P. Schaefer, M. Lev, 2011, American Journal of Neuroradiology.

Nontraumatic Head and Neck Emergencies.

P. Schaefer, M. Lev, H. Curtin, 2019, Radiographics : a review publication of the Radiological Society of North America, Inc.

Prediction of a large diffusion/perfusion mismatch by the presence of a small diffusion abnormality in the setting of a distal ICA or proximal MCA occlusion

R. Gonzalez, L. Schwamm, P. Schaefer, 2010 .

Cerebral blood flow thresholds in acute stroke triage.

R. Gonzalez, M. Wintermark, W. Koroshetz, 2006, Stroke.

Patient selection for mechanical thrombectomy in posterior circulation emergent large-vessel occlusion

R. Gonzalez, P. Schaefer, J. Hirsch, 2018, Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences.

Extended analysis of the spot sign score's performance

R. Gonzalez, P. Schaefer, A. Yoo, 2010, Nature Reviews Neurology.

Imaging recommendations for acute stroke and transient ischemic attack patients: a joint statement by the American Society of Neuroradiology, the American College of Radiology and the Society of NeuroInterventional Surgery.

Max Wintermark, Greg Zaharchuk, Michael H Lev, 2013, Journal of the American College of Radiology : JACR.

Cerebral Microvascular Injury in Severe COVID-19

E. Brown, R. Gonzalez, M. Frosch, 2020, medRxiv.

Central Nervous System Vasculopathies.

P. Schaefer, J. Soun, J. Romero, 2019, Radiologic clinics of North America.

Validation of Highly Accelerated Wave–CAIPI SWI Compared with Conventional SWI and T2*-Weighted Gradient Recalled-Echo for Routine Clinical Brain MRI at 3T

K. Setsompop, S. Cauley, P. Schaefer, 2019, American Journal of Neuroradiology.

Imaging of cerebral metastases.

R. Gonzalez, P. Schaefer, R. Budzik, 1996, Neurosurgery clinics of North America.

Diffusion magnetic resonance imaging of acute ischemic stroke.

R. Gonzalez, A. Sorensen, P. Grant, 2002, Seminars in roentgenology.

Practical Tips for Creating a Diversity, Equity, and Inclusion Committee: Experience From a Multicenter, Academic Radiology Department.

D. Daye, T. McLoud, P. Schaefer, 2021, Journal of the American College of Radiology : JACR.

Radiology Malpractice Claims in the United States From 2008 to 2012: Characteristics and Implications.

Tarik K. Alkasab, E. Halpern, H. Harvey, 2016, Journal of the American College of Radiology : JACR.

Diffusion-weighted imaging in acute stroke.

R. Gonzalez, P. Schaefer, M. Lev, 2005, Neuroimaging clinics of North America.

Acute Ischemic Stroke : Infarct Core Estimation on CT Angiography Source Images Depends on CT Angiography Protocol 1

Z. Chaudhry, R. Gonzalez, P. Schaefer, 2011 .

Optimal Brain MRI Protocol for New Neurological Complaint

Jason M. Johnson, R. Gonzalez, W. Copen, 2014, PloS one.

Diagnostic Performance of a 10-Minute Gadolinium-Enhanced Brain MRI Protocol Compared with the Standard Clinical Protocol for Detection of Intracranial Enhancing Lesions

R. Gonzalez, B. Rosen, T. Witzel, 2017, American Journal of Neuroradiology.

Retrospective assessment of prevalence of nephrogenic systemic fibrosis (NSF) after implementation of a new guideline for the use of gadobenate dimeglumine as a sole contrast agent for magnetic resonance examination in renally impaired patients

S. Saini, P. Schaefer, H. Rolls, 2009, Journal of magnetic resonance imaging : JMRI.

Imaging after direct and indirect extracranial-intracranial bypass surgery.

Edward R. Smith, P. Schaefer, R. Scott, 2013, AJR. American journal of roentgenology.

Glioma recurrence versus radiation necrosis? A pilot comparison of arterial spin-labeled, dynamic susceptibility contrast enhanced MRI, and FDG-PET imaging.

R. Gonzalez, K. Kwong, P. Schaefer, 2010, Academic radiology.

MRI Patterns of Isolated Lesions in the Medulla Oblongata

P. Schaefer, O. Rapalino, G. Gonzalez, 2017, Journal of neuroimaging : official journal of the American Society of Neuroimaging.

Multidetector CT angiography in the evaluation of acute blunt head and neck trauma: a proposed acute craniocervical trauma scoring system.

R. Gonzalez, P. Schaefer, M. Lev, 2010, Radiology.

High resolution vessel wall MR imaging in prestenotic intracranial atherosclerotic disease

P. Schaefer, E. Gurol, S. Raymond, 2019, Journal of Clinical Neuroscience.

The role of predictive algorithm selection on the accuracy of MRI-based prediction of tissue outcome after acute ischemic stroke

B. Rosen, W. Copen, P. Schaefer, 2013 .

Case records of the Massachusetts General Hospital. Case 40-2011. A 52-year-old man with weakness, infections, and enlarged adrenal glands.

P. Schaefer, N. Tritos, T. Stein, 2011, The New England journal of medicine.

Highly Active Antiretroviral Therapy (HAART)

P. Schaefer, D. Ginat, 2015 .

Clinical, Imaging, and Lab Correlates of Severe COVID-19 Leukoencephalopathy

R. Gonzalez, E. Halpern, P. Schaefer, 2021, American Journal of Neuroradiology.

the Stroke Imaging Research (STIR) and Virtual International Stroke Trials Archive (VISTA)-Imaging Investigators Acute Stroke Imaging Research Roadmap II Special Report

M. Luby, A. Alexandrov, A. Demchuk, 2013 .

Clinical validation of Wave-CAIPI susceptibility-weighted imaging for routine brain MRI at 1.5 T

Susie Y. Huang, K. Setsompop, S. Cauley, 2022, European Radiology.

Ultrafast Brain MRI: Clinical Deployment and Comparison to Conventional Brain MRI at 3T

B. Rosen, T. Witzel, P. Schaefer, 2016, Journal of neuroimaging : official journal of the American Society of Neuroimaging.

E-039 Comparison of Medical Therapy vs. Intra-Arterial Therapy for Acute Vertebrobasilar Stroke

R. Gonzalez, P. Schaefer, J. Hirsch, 2016 .

Cerebral Infarct/Intracranial Cerebrovascular Disease

R. Gonzalez, P. Grant, P. Schaefer, 2001 .

Acute stroke imaging research roadmap II | NOVA. The University of Newcastle's Digital Repository

Keith W. Muir, Geoffrey A. Donnan, Joseph P. Broderick, 2013 .

Case records of the Massachusetts General Hospital. Case 39-2012. A 55-year-old man with alcoholism, recurrent seizures, and agitation.

P. Schaefer, E. Bajwa, F. Smith, 2012, The New England journal of medicine.

Spinal dural enhancement on magnetic resonance imaging associated with spontaneous intracranial hypotension. Report of three cases and review of the literature.

P. Schaefer, J. Henson, N. Zervas, 1998, Journal of neurosurgery.

Diagnosis of patients in STOP Stroke and prevalence of LVO in patients diagnosed with stroke or

K. Furie, Wade S. Smith, W. Koroshetz, 2009 .

Stroke differential diagnosis and mimics: Part 2

R. Gonzalez, P. Schaefer, M. Lev, 2015, Applied Radiology.

Diffusion-weighted MR imaging: diagnostic accuracy in patients imaged within 6 hours of stroke symptom onset.

L H Schwamm, A G Sorensen, F. Buonanno, 1999, Radiology.

Intracranial hemorrhage complicating acute stroke: how common is hemorrhagic stroke on initial head CT scan and how often is initial clinical diagnosis of acute stroke eventually confirmed?

R. Gonzalez, P. Schaefer, M. Mullins, 2005, AJNR. American journal of neuroradiology.

Radiologic Imaging Techniques in Cushing’s Disease

P. Schaefer, O. Rapalino, 2011 .

Diagnostic Accuracy and Yield of Multidetector CT Angiography in the Evaluation of Spontaneous Intraparenchymal Cerebral Hemorrhage

P. Schaefer, J. Romero, J. D. Almandoz, 2009, American Journal of Neuroradiology.

Prevalence of traumatic dural venous sinus thrombosis in high-risk acute blunt head trauma patients evaluated with multidetector CT venography.

R. Gonzalez, P. Schaefer, M. Lev, 2010, Radiology.

Case records of the Massachusetts General Hospital. Case 20-2010. A 32-year-old woman with oligomenorrhea and infertility.

P. Schaefer, M. Snuderl, A. Utz, 2010, The New England journal of medicine.

Case 27-2022: A 32-Year-Old Man with Confusion, Headache, and Fever.

P. Schaefer, N. Venna, E. Miloslavsky, 2022, New England Journal of Medicine.

Significance of Large Vessel Intracranial Occlusion Causing Acute Ischemic Stroke and TIA

K. Furie, Wade S. Smith, W. Koroshetz, 2009, Stroke.

Time and Diffusion Lesion Size in Major Anterior Circulation Ischemic Strokes

R. Gonzalez, W. Copen, L. Schwamm, 2014, Stroke.

Acute Confusion and Mutism as a Presentation of Thalamic Strokes Secondary to Deep Cerebral Venous Thrombosis

F. Buonanno, P. Schaefer, S. Kothare, 1998, Journal of child neurology.

Case records of the Massachusetts General Hospital. Case 8-2009. A 36-year-old woman with headache, hypertension, and seizure 2 weeks post partum.

P. Schaefer, E. Hedley‐Whyte, A. Singhal, 2009, The New England journal of medicine.

Multiple Procedure Payment Reduction: Health Policy Update

W. Dillon, P. Schaefer, M. Lev, 2015, American Journal of Neuroradiology.

CT Angiography Source Images Acquired with a Fast‐Acquisition Protocol Overestimate Infarct Core on Diffusion Weighted Images in Acute Ischemic Stroke

R. Gonzalez, P. Schaefer, A. Yoo, 2012, Journal of neuroimaging : official journal of the American Society of Neuroimaging.

Imaging Brain Collaterals: Quantification, Scoring, and Potential Significance

P. Schaefer, S. Raymond, 2017, Topics in magnetic resonance imaging : TMRI.

Infarct Volume Is a Pivotal Biomarker After Intra-Arterial Stroke Therapy

Z. Chaudhry, R. Gonzalez, L. Schwamm, 2012, Stroke.

Arterial wall enhancement overlying carotid plaque on CT angiography correlates with symptoms in patients with high grade stenosis.

R. Gonzalez, P. Schaefer, M. Lev, 2009, Stroke.

Subarachnoid gadolinium enhancement mimicking subarachnoid hemorrhage on FLAIR MR images. Fluid-attenuated inversion recovery.

P. Schaefer, M. Lev, 1999, AJR. American journal of roentgenology.

Rule Out (R/O) Vasculitis

P. Schaefer, E. Grant, S. Thibodeau, 2005 .

The Spot Sign Score in Primary Intracerebral Hemorrhage Identifies Patients at Highest Risk of In-Hospital Mortality and Poor Outcome Among Survivors

R. Gonzalez, P. Schaefer, A. Yoo, 2010, Stroke.

Case of the season: dural arteriovenous fistula mimicking a bithalamic neoplasm or viral encephalitis.

P. Schaefer, M. Borja, D. Boulter, 2014, Seminars in roentgenology.

Assessment of cerebral perfusion and arterial anatomy in hyperacute stroke with three-dimensional functional CT: early clinical results.

G L Wolf, L M Hamberg, F. Buonanno, 1998, AJNR. American journal of neuroradiology.

Isolated Neurosarcoidosis Presenting as Anosmia and Visual Changes

P. Schaefer, M. Joseph, D. Kieff, 1997, Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery.

Normal diffusion-weighted MRI during stroke-like deficits

F. Buonanno, R. Gonzalez, W. Koroshetz, 1999, Neurology.

Validation of a highly accelerated post-contrast wave-controlled aliasing in parallel imaging (CAIPI) 3D-T1 MPRAGE compared to standard 3D-T1 MPRAGE for detection of intracranial enhancing lesions on 3-T MRI

K. Setsompop, S. Cauley, P. Schaefer, 2022, European Radiology.

Imaging the Postoperative Brain

P. Schaefer, D. Ginat, 2012 .

Disorders of Consciousness Associated With COVID-19

P. Schaefer, B. Edlow, A. Foulkes, 2021, Neurology.

Disorders of Consciousness Associated With COVID-19

William R. Sanders, P. Schaefer, B. Edlow, 2021, Neurology.

Intact Brain Network Function in an Unresponsive Patient with COVID‐19

L. Hochberg, B. Rosen, P. Schaefer, 2020, Annals of neurology.

Accurate super-resolution low-field brain MRI

J. E. Iglesias, P. Schaefer, B. Billot, 2022, ArXiv.

Case 5-2018: A 63-Year-Old Man with Confusion after Stem-Cell Transplantation.

P. Schaefer, M. Martinez-Lage, A. El-Jawahri, 2018, The New England journal of medicine.

(Endo)symbiotic Methanogenic Archaea

P. Schaefer, J. Hirsch, M. Lev, 2018, Microbiology Monographs.

Radiation necrosis versus glioma recurrence: conventional MR imaging clues to diagnosis.

Mark E Mullins, Michael H Lev, Pamela W Schaefer, 2005, AJNR. American journal of neuroradiology.

Case records of the Massachusetts General Hospital. Case 22-2008. A 52-year-old woman with fever and confusion.

M. Hirsch, P. Schaefer, J. Branda, 2008, The New England journal of medicine.

A case of immunotherapy-responsive eastern equine encephalitis with diffusion-weighted imaging

L. Schwamm, P. Schaefer, M. Golomb, 2001, Neurology.

Evaluating effects of normobaric oxygen therapy in acute stroke with MRI-based predictive models

A. Sorensen, T. Benner, P. Schaefer, 2012, Medical gas research.

A Pilot Study of Normobaric Oxygen Therapy in Acute Ischemic Stroke

Thomas Benner, A Gregory Sorensen, Walter J Koroshetz, 2005, Stroke.

Brain Infections: Evidence-Based Neuroimaging

P. Schaefer, Huihui Chen, 2013 .

Stroke differential diagnosis and mimics: Part 1

R. Gonzalez, P. Schaefer, M. Lev, 2015, Applied Radiology.

MRI-Based Selection for Intra-Arterial Stroke Therapy: Value of Pretreatment Diffusion-Weighted Imaging Lesion Volume in Selecting Patients With Acute Stroke Who Will Benefit From Early Recanalization

R. Gonzalez, P. Schaefer, A. Yoo, 2009, Stroke.

In patients with suspected acute stroke, CT perfusion-based cerebral blood flow maps cannot substitute for DWI in measuring the ischemic core

R. Gonzalez, W. Copen, P. Schaefer, 2017, PloS one.

Other cerebrovascular occlusive disease.

P. Schaefer, A. Singhal, É. Camargo, 2016, Handbook of clinical neurology.

Case records of the Massachusetts General Hospital. Case 36-2012. Recovery of a 16-year-old girl from trauma and burns after a car accident.

S. Fagan, R. Sheridan, P. Schaefer, 2012, The New England journal of medicine.

Unique linear and nodular MR enhancement pattern in schistosomiasis of the central nervous system: report of three patients.

R. Gonzalez, P. Schaefer, M. Lev, 2001, AJR. American journal of roentgenology.

3 Tesla intraoperative MRI for brain tumor surgery

J. Madsen, D. Cahill, W. Curry, 2014, Journal of magnetic resonance imaging : JMRI.

An Acute Ischemic Stroke Classification Instrument That Includes CT or MR Angiography: The Boston Acute Stroke Imaging Scale

L. Schwamm, P. Schaefer, M. Lev, 2008, American Journal of Neuroradiology.

Case records of the Massachusetts General Hospital. Case 8-2014. A 29-year-old man with headache, vomiting, and diplopia.

D. Louis, P. Schaefer, A. Chi, 2014, The New England journal of medicine.

Case records of the Massachusetts General Hospital. Case 11-2007. A 59-year-old man with neck pain, weakness in the arms, and cranial-nerve palsies.

A. Steere, P. Schaefer, D. Greer, 2007, The New England journal of medicine.

Case 11-2007 : A 59-Year-Old Man with Neck Pain , Weakness in the Arms , and Cranial-Nerve Palsies

A. Steere, P. Schaefer, D. Greer, 2007 .

Ischemic Infarction in Young Adults.

P. Schaefer, Janet Yanqing Mei, 2023, Radiologic clinics of North America.

Quantifying the Impact of Noninterpretive Tasks on Radiology Report Turn-Around Times.

P. Schaefer, M. Lev, Renata R. Almeida, 2017, Journal of the American College of Radiology : JACR.

Case 8-2014: A man with headache, vomiting, and diplopia.

Tracey A. Cho, P. Schaefer, A. Chi, 2014, The New England journal of medicine.

Promoter hypermethylation of SHOX2 and SEPT9 is a potential biomarker for minimally invasive diagnosis in adenocarcinomas of the biliary tract

G. Kristiansen, D. Dietrich, P. Schaefer, 2016, Clinical Epigenetics.

Diffusion-Weighted Imaging in Neonatal Cerebral Infarction: Clinical Utility and Follow-Up

P. Schaefer, K. Krishnamoorthy, M. Takeoka, 2000, Journal of child neurology.

Diffusion-weighted imaging discriminates between cytotoxic and vasogenic edema in a patient with eclampsia.

L H Schwamm, F. Buonanno, L. Schwamm, 1997, Stroke.

Diffusion-weighted magnetic resonance imaging (DWI) is a technique based on diffusion of water molecules in tissues

P. Schaefer, R. Forghani, 2019 .

Clinical Applications of Diffusion

P. Schaefer, R. Forghani, 2011 .

Diagnostic Value of Apparent Diffusion Coefficient Hyperintensity in Selected Patients With Acute Neurologic Deficits

L H Schwamm, W. Koroshetz, L. Schwamm, 2001, Journal of neuroimaging : official journal of the American Society of Neuroimaging.

Comparison of diameter and perimeter methods for tumor volume calculation.

A G Sorensen, G Barest, R. Weisskoff, 2001, Journal of clinical oncology : official journal of the American Society of Clinical Oncology.

Diffusion- and perfusion-weighted imaging in vasospasm after subarachnoid hemorrhage.

A. Sorensen, W. Copen, W. Koroshetz, 1999, Stroke.

Diffusion MR of Acute Stroke

P. Schaefer, A. Kim, A. Kiruluta, 2011 .

Diffusion-weighted imaging in acute stroke.

P. Schaefer, M. Lev, W. A. Copen, 2006, Magnetic resonance imaging clinics of North America.

Parenchymal abnormalities associated with cerebral venous sinus thrombosis: assessment with diffusion-weighted MR imaging.

P. Grant, P. Schaefer, M. Mullins, 2004, AJNR. American journal of neuroradiology.

Systematic Characterization of the Computed Tomography Angiography Spot Sign in Primary Intracerebral Hemorrhage Identifies Patients at Highest Risk for Hematoma Expansion: The Spot Sign Score

P. Schaefer, A. Yoo, M. Lev, 2009, Stroke.

MRI Highly Accelerated Wave‐CAIPI T1‐SPACE versus Standard T1‐SPACE to detect brain gadolinium‐enhancing lesions at 3T

K. Setsompop, S. Cauley, P. Schaefer, 2021, Journal of neuroimaging : official journal of the American Society of Neuroimaging.

Predicting cerebral ischemic infarct volume with diffusion and perfusion MR imaging.

A Gregory Sorensen, Walter J Koroshetz, Julian He, 2002, AJNR. American journal of neuroradiology.

Applications of DWI in clinical neurology

P. Schaefer, 2001, Journal of the Neurological Sciences.

Recurrent scalp metastasis from glioblastoma following resection

W. Curry, P. Schaefer, D. Ginat, 2013, Clinical Neurology and Neurosurgery.

Imaging guidelines and findings of extracranial glioblastoma

P. Schaefer, D. Ginat, 2014, Journal of Neuro-Oncology.

Novel diagnostic approaches in Bing-Neel syndrome.

P. Schaefer, R. Forghani, F. Hochberg, 2011, Clinical lymphoma, myeloma & leukemia.

Bing-Neel Syndrome revisited.

P. Schaefer, R. Forghani, F. Hochberg, 2009, Clinical lymphoma & myeloma.

From the 6 th International Workshop on Waldenström ’ s Macroglobulinemia

P. Schaefer, R. Forghani, F. Hochberg, 2011 .

Characterization and evolution of diffusion MR imaging abnormalities in stroke patients undergoing intra-arterial thrombolysis.

A. Sorensen, W. Koroshetz, L. Schwamm, 2004, AJNR. American journal of neuroradiology.

CT Angiography-Source Image Hypoattenuation Predicts Clinical Outcome in Posterior Circulation Strokes Treated With Intra-Arterial Therapy

L. Schwamm, P. Schaefer, A. Yoo, 2008, Stroke.

Assessing tissue viability with MR diffusion and perfusion imaging.

A Gregory Sorensen, Walter J Koroshetz, Julian He, 2003, AJNR. American journal of neuroradiology.

CT and conventional and diffusion-weighted MR imaging in acute stroke: study in 691 patients at presentation to the emergency department.

A Gregory Sorensen, Mark E Mullins, Walter J Koroshetz, 2002, Radiology.

Diffusion-weighted MR imaging

Bing Wang, A. Gregory Sorensen, Lee H. Schwamm, 1999 .

Vessel Wall MRI Added to MR Angiography in the Evaluation of Suspected Vasculopathies

P. Schaefer, S. Raymond, J. Romero, 2019, Journal of neuroimaging : official journal of the American Society of Neuroimaging.

Arterial input function placement for accurate CT perfusion map construction in acute stroke.

Michael H Lev, Pina C Sanelli, Pamela W Schaefer, 2010, AJR. American journal of roentgenology.

First-pass quantitative CT perfusion identifies thresholds for salvageable penumbra in acute stroke patients treated with intra-arterial therapy.

W. Koroshetz, L. Schwamm, P. Schaefer, 2006, AJNR. American journal of neuroradiology.

Effects of tracer arrival time on flow estimates in MR perfusion‐weighted imaging

Leif Østergaard, A Gregory Sorensen, Walter J Koroshetz, 2003, Magnetic resonance in medicine.

Academic Radiology Departmental Operational Strategy Related to the Coronavirus Disease 2019 (COVID-19) Pandemic

P. Schaefer, J. Brink, Anand M. Prabhakar, 2020, Journal of the American College of Radiology.

CASE RECORDS of the MASSACHUSETTS GENERAL HOSPITAL. Case 21-2016. A 32-Year-Old Man in an Unresponsive State.

P. Schaefer, A. Fenves, Virginia M. Pierce, 2016, The New England journal of medicine.

Territorial Strokes as a Tool to Learn Vascular Territories

P. Schaefer, B. Vachha, 2014 .

A Tale of Two Organ Systems: Imaging Review of Diseases Affecting the Thoracic and Neurological Systems. Part 2.

P. Schaefer, L. Chan, A. Gogna, 2021, Current problems in diagnostic radiology.

Accuracy of CT angiography for the diagnosis of vascular abnormalities causing intraparenchymal hemorrhage in young patients

P. Schaefer, J. Goldstein, Maddy Artunduaga, 2009, Emergency Radiology.

Percentage Insula Ribbon Infarction of >50% Identifies Patients Likely to Have Poor Clinical Outcome Despite Small DWI Infarct Volume

P. Schaefer, M. Lev, S. Kamalian, 2015, American Journal of Neuroradiology.

Case records of the Massachusetts General Hospital. Case 22-2005. An 81-year-old man with cough, fever, and altered mental status.

P. Schaefer, E. Hedley‐Whyte, H. Hollander, 2005, The New England journal of medicine.

articlePredictors of functional outcome vary by the hemisphere of involvement in major ischemic stroke treated with intra-arterial therapy : a retrospective cohort study

P. Schaefer, A. Yoo, R. Nogueira, 2015 .

Predictors of functional outcome vary by the hemisphere of involvement in major ischemic stroke treated with intra-arterial therapy: a retrospective cohort study

P. Schaefer, A. Yoo, R. Nogueira, 2010, BMC neurology.

Regional ischemia and ischemic injury in patients with acute middle cerebral artery stroke as defined by early diffusion-weighted and perfusion-weighted MRI.

L H Schwamm, A G Sorensen, S C Cramer, 1998, Stroke.

Exposing Hidden Truncation-Related Errors in Acute Stroke Perfusion Imaging

W. Copen, L. Schwamm, P. Schaefer, 2015, American Journal of Neuroradiology.

Perfusion MRI of Acute Stroke

W. Copen, P. Schaefer, R. González, 2011 .

Perfusion magnetic resonance imaging of acute ischemic stroke.

A. Sorensen, P. Grant, W. Koroshetz, 2002, Seminars in roentgenology.

Interobserver Reliability of Baseline Noncontrast CT Alberta Stroke Program Early CT Score for Intra-Arterial Stroke Treatment Selection

Z. Chaudhry, P. Schaefer, A. Yoo, 2012, American Journal of Neuroradiology.

Unruptured intracranial aneurysms conservatively followed with serial CT angiography: could morphology and growth predict rupture?

Javier M Romero, Joshua A Hirsch, Pamela W Schaefer, 2013, Journal of NeuroInterventional Surgery.

Imaging Recommendations for Acute Stroke and Transient Ischemic Attack Patients: A Joint Statement by the American Society of Neuroradiology, the American College of Radiology, and the Society of NeuroInterventional Surgery

S W Hetts, M Wintermark, G Zaharchuk, 2013, American Journal of Neuroradiology.

Correlation between dynamic contrast-enhanced perfusion MRI relative cerebral blood volume and vascular endothelial growth factor expression in meningiomas.

P. Schaefer, D. Ginat, G. Yeaney, 2012, Academic radiology.

Case 34-2017. A 76-Year-Old Man with Fever, Weight Loss, and Weakness.

Tracey A. Cho, P. Schaefer, M. Azar, 2017, The New England journal of medicine.

Stroke and stroke mimics: a pattern-based approach.

P. Schaefer, D. Boulter, 2014, Seminars in roentgenology.

Magnetic Resonance Imaging of Cerebral Hemorrhagic Stroke

A. Zaheer, P. Schaefer, Y. Ozsunar, 2000, Topics in magnetic resonance imaging : TMRI.

White Matter Integrity and Early Outcomes After Acute Ischemic Stroke

W. Copen, P. Schaefer, O. Wu, 2019, Translational Stroke Research.

Vice Chair for Education: Twelve Roles to Provide a Framework for Success.

P. Slanetz, P. Schaefer, M. Mullins, 2020, Academic radiology.

Cerebral Blood Flow Thresholds for Tissue Infarction in Patients with Acute Ischemic Stroke Treated with Intra-Arterial Revascularization Therapy Depend on Timing of Reperfusion

P. Schaefer, A. Yoo, K. Mui, 2011, American Journal of Neuroradiology.

Acute Stroke Imaging Research Roadmap II

M. Luby, A. Alexandrov, A. Demchuk, 2008, Stroke.

Diffusion-weighted imaging identifies a subset of lacunar infarction associated with embolic source.

F. Buonanno, W. Koroshetz, L. Schwamm, 1999, Stroke.

Simultaneous Multislice–Based 5‐Minute Lumbar Spine MRI Protocol: Initial Experience in a Clinical Setting

B. Rosen, T. Witzel, H. Bhat, 2017, Journal of neuroimaging : official journal of the American Society of Neuroimaging.

Talking Points: Enhancing Communication Between Radiologists and Patients.

P. Schaefer, S. Jordan, V. Agarwal, 2021, Academic radiology.

Diffusion-weighted magnetic resonance imaging identifies the "clinically relevant" small-penetrator infarcts.

F. Buonanno, W. Koroshetz, P. Schaefer, 2000, Archives of neurology.

Evaluation of Ultrafast Wave–Controlled Aliasing in Parallel Imaging 3D-FLAIR in the Visualization and Volumetric Estimation of Cerebral White Matter Lesions

K. Setsompop, P. Schaefer, Q. Fan, 2021, American Journal of Neuroradiology.

Optimization of magnetization transfer contrast for EPI FLAIR brain imaging

Bryan A. Clifford, T. Hilbert, K. Setsompop, 2022, Magnetic resonance in medicine.

Reliability of cerebral blood volume maps as a substitute for diffusion‐weighted imaging in acute ischemic stroke

Pamela W Schaefer, Ona Wu, W. Copen, 2012, Journal of magnetic resonance imaging : JMRI.

Quantitative Assessment of Core/Penumbra Mismatch in Acute Stroke: CT and MR Perfusion Imaging Are Strongly Correlated When Sufficient Brain Volume Is Imaged

Michael H Lev, Lee Schwamm, Pamela W Schaefer, 2008, Stroke.

Magnetic Resonance Spectroscopy Study of Oxygen Therapy in Ischemic Stroke

Thomas Benner, A Gregory Sorensen, Walter J Koroshetz, 2007, Stroke.

Resident Clinician Educator Leadership Pathway Tracks in US Radiology Programs: An ADVICER 2021 Survey Study.

P. Schaefer, O. Awan, L. Deitte, 2021, Current problems in diagnostic radiology.

Acute ischemic stroke: infarct core estimation on CT angiography source images depends on CT angiography protocol.

Z. Chaudhry, P. Schaefer, A. Yoo, 2012, Radiology.

Role of Recanalization in Acute Stroke Outcome: Rationale for a CT Angiogram-Based “Benefit of Recanalization” Model

A. Demchuk, L. Schwamm, P. Schaefer, 2008, American Journal of Neuroradiology.

Severity of Leukoaraiosis and Susceptibility to Infarct Growth in Acute Stroke

A Gregory Sorensen, Walter J Koroshetz, Jonathan Rosand, 2008, Stroke.

Case 21-2018: A 61-Year-Old Man with Grandiosity, Impulsivity, and Decreased Sleep.

P. Schaefer, L. Prager, JohnMark Taylor, 2018, The New England journal of medicine.

Location-weighted CTP analysis predicts early motor improvement in stroke

K. Furie, E. Halpern, P. Schaefer, 2012, Neurology.

Diffusion weighted imaging reversibility in the brainstem following successful recanalization of acute basilar artery occlusion

Joshua A Hirsch, Pamela W Schaefer, P. Schaefer, 2010, Journal of NeuroInterventional Surgery.

‘Footprints’ of Transient Ischemic Attacks: A Diffusion-Weighted MRI Study

Lee H. Schwamm, Yuchiao Chang, Walter J. Koroshetz, 2002, Cerebrovascular Diseases.

Acute ischemic stroke imaging: a practical approach for diagnosis and triage

P. Schaefer, J. Young, 2015, The International Journal of Cardiovascular Imaging.

Admission CT Perfusion Is an Independent Predictor of Hemorrhagic Transformation in Acute Stroke with Similar Accuracy to DWI

K. Furie, P. Schaefer, M. Lev, 2011, Cerebrovascular Diseases.

Combining Acute Diffusion-Weighted Imaging and Mean Transmit Time Lesion Volumes With National Institutes of Health Stroke Scale Score Improves the Prediction of Acute Stroke Outcome

Pamela W Schaefer, W. Copen, L. Schwamm, 2010, Stroke.

Diffusion-Weighted Imaging as a Problem-Solving Tool in the Evaluation of Patients with Acute Strokelike Syndromes

P. Schaefer, 2000, Topics in magnetic resonance imaging : TMRI.

The Independent Payment Advisory Board

P. Schaefer, L. Manchikanti, J. Hirsch, 2011, American Journal of Neuroradiology.

Comparative Effectiveness Research

P. Schaefer, L. Manchikanti, P. Sanelli, 2014, American Journal of Neuroradiology.

Challenges in Differentiating Pediatric Autoimmune CNS Diseases with Similar Clinical and Imaging Phenotypes

P. Schaefer, P. Caruso, B.P. Kelley, 2019, American Journal of Neuroradiology.

Diffusion-weighted MR imaging in closed head injury: high correlation with initial glasgow coma scale score and score on modified Rankin scale at discharge.

A Gregory Sorensen, Pamela W Schaefer, A. Sorensen, 2004, Radiology.

Detection and characterization of intracranial aneurysms: a 10-year multidetector CT angiography experience in a large center

P. Schaefer, J. Hirsch, J. Heit, 2015, Journal of NeuroInterventional Surgery.

Imaging Patterns and Management Algorithms in Acute Stroke: An Update for the Emergency Radiologist.

P. Schaefer, B. Vachha, 2015, Radiologic clinics of North America.

CT angiography spot sign predicts in-hospital mortality in patients with secondary intracerebral hemorrhage

P. Schaefer, A. Yoo, M. Lev, 2011, Journal of NeuroInterventional Surgery.

Diffusion MR imaging of acute ischemic stroke.

P. Grant, L. Becerra, P. Schaefer, 2002, Neuroimaging clinics of North America.

Frequency and clinical context of decreased apparent diffusion coefficient reversal in the human brain.

E F Halpern, L H Schwamm, A G Sorensen, 2001, Radiology.

CHAPTER 47 – Intracranial Metastases

P. Schaefer, J. Henson, A. Vossough, 2008 .

Clinical utility of arterial spin labeling perfusion images in the emergency department for the work-up of stroke-like symptoms

P. Schaefer, J. Locascio, K. Buch, 2021, Neuroradiology.

In Acute Stroke, Can CT Perfusion-Derived Cerebral Blood Volume Maps Substitute for Diffusion-Weighted Imaging in Identifying the Ischemic Core?

Lee H. Schwamm, Ona Wu, Albert J. Yoo, 2015, PloS one.

Acute ischemic stroke

Michael H. Lev, Joshua A. Hirsch, Walter J. Koroshetz, 2006 .

BRAIN MR SPECTROSCOPIC FINDINGS IN THREE CONSECUTIVE COVID-19 PATIENTS: PRELIMINARY OBSERVATIONS

P. Schaefer, B. Edlow, M. Lev, 2020, medRxiv.

Imaging: Diagnostic Accuracy in Patients Imaged within 6 Hours of Stroke Symptom

Bing Wang, A. Gregory Sorensen, Lee H. Schwamm, 1999 .

Abstract 3319: Prediction Of Lesion Expansion In Stroke Patients Using Acute MRI

A. Sorensen, W. Copen, P. Schaefer, 2012 .

Rapid identification of a major diffusion/perfusion mismatch in distal internal carotid artery or middle cerebral artery ischemic stroke

L. Schwamm, P. Schaefer, A. Yoo, 2012, BMC Neurology.

Diffusion-weighted MR imaging of the brain.

P. Ellen Grant, Pamela W. Schaefer, P. Schaefer, 2000, Radiology.

The peer review process: a primer for JNIS readers

Michael H Lev, Robert W Tarr, Joshua A Hirsch, 2015, Journal of NeuroInterventional Surgery.

Case 32-2020: A 63-Year-Old Man with Confusion, Fatigue, and Garbled Speech.

P. Schaefer, J. Branda, S. Mukerji, 2020, The New England journal of medicine.

Intracranial organizing hematoma with papillary endothelial hyperplasia features after resection and involved field radiotherapy for cerebellar juvenile pilocytic astrocytoma.

B. Nahed, P. Schaefer, B. Walcott, 2014, Clinical imaging.

Existence of the diffusion-perfusion mismatch within 24 hours after onset of acute stroke: dependence on proximal arterial occlusion.

W. Copen, L. Schwamm, P. Schaefer, 2009, Radiology.

Headache: when is neurologic imaging indicated?

P. Schaefer, J. Thrall, A. Singhal, 2007, Journal of the American College of Radiology : JACR.

Stability of large diffusion/perfusion mismatch in anterior circulation strokes for 4 or more hours

A. Sorensen, P. Schaefer, L. Roccatagliata, 2010, BMC neurology.

Acute Ischemic Stroke: Imaging and Intervention

Michael H. Lev, Joshua A. Hirsch, Walter J. Koroshetz, 2011 .

Recent increase of breast cancer incidence among women under the age of forty

G. Vlastos, H. Verkooijen, P. Chappuis, 2007, British Journal of Cancer.

Diffusion-weighted MRI in diffuse axonal injury of the brain

A. Sorensen, T. Huisman, P. Schaefer, 2002, European Radiology.

Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 4-2004. A nine-month-old boy with an orbital rhabdomyosarcoma.

P. Schaefer, N. Tarbell, A. Friedmann, 2004, The New England journal of medicine.

Case 5-2022: A 65-Year-Old Woman with Rapidly Progressive Weakness in the Right Arm and Recurrent Falls.

P. Schaefer, B. Appleby, C. Stephen, 2022, New England Journal of Medicine.

to Diagnosis Clues Recurrence: Conventional MR Imaging Radiation Necrosis Versus Glioma

P. Schaefer, M. Mullins, M. Lev, 2005 .

PS-341 and gemcitabine in patients with metastatic pancreatic adenocarcinoma: a North Central Cancer Treatment Group (NCCTG) randomized phase II study.

P. Schaefer, N. Foster, J. Kugler, 2005, Annals of oncology : official journal of the European Society for Medical Oncology.

Conventional magnetic resonance imaging of acute stroke.

L. Schwamm, P. Schaefer, J. Romero, 2002, Seminars in roentgenology.

MR perfusion imaging in acute ischemic stroke.

W. Copen, P. Schaefer, O. Wu, 2011, Neuroimaging clinics of North America.

S. Saini, P. Schaefer, H. Rolls, 2009, Journal of magnetic resonance imaging : JMRI.

Magnetic Resonance Spectroscopy Study of Oxygen Therapy in Ischemic Stroke

W. Koroshetz, P. Schaefer, A. Singhal, 2007, Stroke.

Evolution of water diffusion and anisotropy in hyperacute stroke: significant correlation between fractional anisotropy and T2.

A Gregory Sorensen, P Ellen Grant, Walter J Koroshetz, 2004, AJNR. American journal of neuroradiology.

Advances in Stroke: Imaging (vol 43, pg 302, 2012)

P. Schaefer, S. Payabvash, S. Kamalian, 2012 .

Acute Ischemic Stroke: Imaging and Intervention

W. Koroshetz, P. Schaefer, J. Hirsch, 2007, American Journal of Neuroradiology.

Magnetic resonance angiography in acute stroke.

P. Schaefer, G. Rordorf, David Yu, 2002, Seminars in roentgenology.

Rule Out (R/O) Intracranial Aneurysm

P. Schaefer, R. González, P. Grant, 2002 .

Unilateral Temporal Lobe Stroke Causing Ischemic Transient Global Amnesia: Role for Diffusion‐Weighted Imaging in the Initial Evaluation

L. Schwamm, P. Schaefer, D. Greer, 2001, Journal of neuroimaging : official journal of the American Society of Neuroimaging.

Imaging the Intraoperative and Postoperative Brain

P. Schaefer, D. Ginat, Marc D. Moisi, 2017 .

Stroke as Defined by Early Diffusion-Weighted and Perfusion-Weighted MRI Regional Ischemia and Ischemic Injury in Patients With Acute Middle Cerebral Artery

F. Buonanno, S. Cramer, A. Sorensen, 1998 .