Dual energy computed tomography for the head

Dual energy CT (DECT) is a promising technology that provides better diagnostic accuracy in several brain diseases. DECT can generate various types of CT images from a single acquisition data set at high kV and low kV based on material decomposition algorithms. The two-material decomposition algorithm can separate bone/calcification from iodine accurately. The three-material decomposition algorithm can generate a virtual non-contrast image, which helps to identify conditions such as brain hemorrhage. A virtual monochromatic image has the potential to eliminate metal artifacts by reducing beam-hardening effects. DECT also enables exploration of advanced imaging to make diagnosis easier. One such novel application of DECT is the X-Map, which helps to visualize ischemic stroke in the brain without using iodine contrast medium.

[2]  Joel G Fletcher,et al.  Dual-source dual-energy CT with additional tin filtration: Dose and image quality evaluation in phantoms and in vivo. , 2010, AJR. American journal of roentgenology.

[3]  Hiroaki Naito,et al.  Dual-energy direct bone removal CT angiography for evaluation of intracranial aneurysm or stenosis: comparison with conventional digital subtraction angiography , 2009, European Radiology.

[4]  C. McCollough,et al.  Dual- and Multi-Energy CT: Principles, Technical Approaches, and Clinical Applications. , 2015, Radiology.

[5]  P. Hofman,et al.  Dual-energy CT of the brain and intracranial vessels. , 2012, AJR. American journal of roentgenology.

[6]  B. Krauss,et al.  Dual-Energy CT in the Evaluation of Intracerebral Hemorrhage of Unknown Origin: Differentiation between Tumor Bleeding and Pure Hemorrhage , 2012, American Journal of Neuroradiology.

[7]  K. Stierstorfer,et al.  First performance evaluation of a dual-source CT (DSCT) system , 2006, European Radiology.

[8]  Shuai Leng,et al.  Dual-energy CT-based monochromatic imaging. , 2012, AJR. American journal of roentgenology.

[9]  C. Truwit,et al.  Loss of the insular ribbon: another early CT sign of acute middle cerebral artery infarction. , 1990, Radiology.

[10]  M. Reiser,et al.  Material differentiation by dual energy CT: initial experience , 2007, European Radiology.

[11]  M. Wiesmann,et al.  Noncontrast CT in Deep Cerebral Venous Thrombosis and Sinus Thrombosis: Comparison of its Diagnostic Value for Both Entities , 2009, American Journal of Neuroradiology.

[12]  B. Krauss,et al.  Unenhanced Dual-Energy Computed Tomography: Visualization of Brain Edema , 2017, Investigative radiology.

[13]  T. Johnson,et al.  Dual-energy CT: general principles. , 2012, AJR. American journal of roentgenology.

[14]  R. Gupta,et al.  Differentiation of Hemorrhage from Iodinated Contrast in Different Intracranial Compartments Using Dual-Energy Head CT , 2012, American Journal of Neuroradiology.

[15]  Cynthia H McCollough,et al.  Optimal Spectral Filtration for Dual-Energy and Dual-Source CT , 2009 .

[16]  J. Wildberger,et al.  Dual-Energy CT: What the Neuroradiologist Should Know , 2015, Current Radiology Reports.

[17]  Christianne Leidecker,et al.  Evaluation of dual-energy CT for differentiating intracerebral hemorrhage from iodinated contrast material staining. , 2010, Radiology.

[18]  Arjun Nair,et al.  Dual-energy CT: vascular applications. , 2012, AJR. American journal of roentgenology.

[19]  J. Seo,et al.  Contrast Enhancement and Contrast Extravasation on Computed Tomography After Intra-Arterial Thrombolysis in Patients With Acute Ischemic Stroke , 2004, Stroke.

[20]  Rajiv Gupta,et al.  Dual-Energy Head CT Enables Accurate Distinction of Intraparenchymal Hemorrhage from Calcification in Emergency Department Patients. , 2016, Radiology.

[21]  F. Shishido,et al.  Early CT finding in cerebral infarction: obscuration of the lentiform nucleus. , 1988, Radiology.

[22]  T. Vogl,et al.  Automatic bone removal technique in whole-body dual-energy CT angiography: performance and image quality. , 2012, AJR. American journal of roentgenology.

[23]  R. Brooks.  A Quantitative Theory of the Hounsfield Unit and Its Application to Dual Energy Scanning , 1977, Journal of computer assisted tomography.

[24]  C. McCollough,et al.  Quantitative imaging of element composition and mass fraction using dual-energy CT: three-material decomposition. , 2009, Medical physics.

[25]  R. Higashida,et al.  Intra-arterial Prourokinase for Acute Ischemic Stroke: The PROACT II Study: A Randomized Controlled Trial , 1999 .

[26]  Kortaro Tanaka,et al.  A Novel Imaging Technique (X-Map) to Identify Acute Ischemic Lesions Using Noncontrast Dual-Energy Computed Tomography. , 2017, Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association.

[27]  C D Claussen,et al.  Automatic bone and plaque removal using dual energy CT for head and neck angiography: feasibility and initial performance evaluation. , 2010, European journal of radiology.

[28]  Konstantin Nikolaou,et al.  Metal artifact reduction by dual energy computed tomography using monoenergetic extrapolation , 2011, European Radiology.

[29]  P. Apfaltrer.  Dual Energy-CT , 2015 .