AJNR. American journal of neuroradiology
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AJNR Am J Neuroradiol · Apr 1998
Comparative StudyDiagnosis of brain death using two-phase spiral CT.
The purpose of this study was to determine the utility of spiral CT in the diagnosis of brain death. ⋯ Two-phase spiral CT can demonstrate the absence of intracerebral blood flow in brain death.
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AJNR Am J Neuroradiol · Apr 1998
Patterns of lesion development in multiple sclerosis: longitudinal observations with T1-weighted spin-echo and magnetization transfer MR.
We evaluated the appearance of enhancing multiple sclerosis (MS) lesions on unenhanced T1-weighted MR images and the natural course of enhancing MS lesions on serial unenhanced T1-weighted and magnetization transfer (MT) MR images. ⋯ Most enhancing lesions appear slightly to significantly hypointense on unenhanced T1-weighted images. Although most hypointensities are reversible, only those lesions that fail to recover on unenhanced T1-weighted and MT images may have considerable irreversible structural changes.