منابع مشابه
Crossed Cerebellar Diaschisis
Crossed cerebellar diaschisis (CCD) describes a depression of oxidative metabolism glucose and blood flow in the cerebellum secondary to a supratentorial lesion in the contralateral cerebral hemisphere. PET/MR has the potential to become a powerful tool for demonstrating and imaging intracranial lesions .We herein report 3 cases of CCD imaging using a tri-modality PET/CT–MR setup for investigat...
متن کاملCrossed cerebellar diaschisis.
The term "diaschisis," as originally used by Von-Monakow (1), implies an immediate decrease in neuronal activity in a region due to an interruption of its afferent axonal supply. Experimental studies, in animals , of unilateral ischemia in which neuronal function in the contralateral hemisphere was demonstrated to be impaired, provided evidence for such a mechanism (2). The corpus callosum appe...
متن کاملCrossed hemispheric diaschisis in unilateral cerebellar lesions.
BACKGROUND AND PURPOSE We studied 12 patients with unilateral cerebellar hemorrhage to look at its effect on regional cerebral blood flow. METHODS We used single-photon emission computed tomography by continuous inhalation of xenon-133. The blood flow was quantified in the cerebellum and in nine areas of interest on the slice passing through the basal ganglia. RESULTS The comparison of the ...
متن کاملTeaching NeuroImages: Acute crossed cerebellar diaschisis.
An 82-year-old woman with a history of chronic left parietal ischemic infarction presented with acutely altered mental status and abnormal right-sided movements. MRI (figure 1) demonstrated gyriform reduced diffusion signal, T2 hyperintensity, and swelling in the left cerebral hemisphere and contralateral right cerebellum. EEG (figure 2) revealed lateralized periodic discharges, likely represen...
متن کاملCrossed cerebellar diaschisis in acute stroke detected by dynamic susceptibility contrast MR perfusion imaging.
BACKGROUND AND PURPOSE Crossed cerebellar diaschisis (CCD), the decrease in blood flow and metabolism in the cerebellar hemisphere contralateral to a supratentorial stroke, is frequently reported on positron-emission tomography (PET) and single-photon emission CT (SPECT) but is rarely described with MR perfusion techniques. This study was undertaken to determine the frequency of CCD observed in...
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ژورنال
عنوان ژورنال: Neurology
سال: 2004
ISSN: 0028-3878,1526-632X
DOI: 10.1212/01.wnl.0000123088.81455.f2