Unique CT imaging advantages. Hemorrhage and calcification.
Computed tomography remains the imaging modality of choice in the detection of two processes: acute intracranial hemorrhage and calcification; however, in the subacute and chronic stages of hemorrhage, MR imaging is more sensitive in aging and staging hemorrhage. FLAIR imaging increases the sensitivity of MR imaging in the detection of subarachnoid hemorrhage. The signal characteristics of calcification on MR imaging is variable, especially on T1-weighted images decreasing its detectability. CT is superior to MR imaging in the detection of calcification. A number of factors including slice thickness, as well as window width and level may affect the detectability of calcification on CT.
Department of Radiology, Los Angeles County/USC Medical Center, Los Angeles, California 90033, USA.
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D000208:Acute Disease; D001927:Brain Diseases / Q000000981:diagnostic imaging*; D002114:Calcinosis / Q000000981:diagnostic imaging*; D002543:Cerebral Hemorrhage / Q000175:diagnosis / Q000000981:diagnostic imaging*; D002908:Chronic Disease; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods; D011856:Radiographic Image Enhancement / Q000379:methods; D012680:Sensitivity and Specificity; D013345:Subarachnoid Hemorrhage / Q000175:diagnosis / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed / Q000379:methods