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- W2017139675 abstract "Dynamic computed tomography (DCT) was evaluated as a diagnostic indicator for chronic supratentorial ischemia in 50 cases with or without minor neurological deficits. Peak height (PH, the maximum value of the gamma fitted curve), peak time (PT, the time to PH from the start of DCT), transit time (TT, the time between the first and second inflection points of the gamma fitted curve), and their functional maps were analyzed. Cerebral angiography was then performed in all cases to identify stenotic or occlusive vascular lesions in major cerebral arteries. DCT clearly detected 12 of 13 occlusions of the internal carotid artery (ICA) or middle cerebral artery (MCA), although one ICA occlusion was masked by the contralateral MCA occlusion. However, DCT detected only severe ICA or MCA stenosis (more than 90%). Probably, stenotic lesions of less than 90% did not cause detectable hemodynamic compromise. DCT using PH, PT, and TT functional maps is a useful diagnostic method for hemodynamic changes in ischemic cerebrovascular disease, although bilateral lesions and less stenotic lesions (<90%) are difficult to detect." @default.
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- W2017139675 date "1991-01-01" @default.
- W2017139675 modified "2023-10-16" @default.
- W2017139675 title "Dynamic Computed Tomography for the Evaluation of Cerebrovascular Disease" @default.
- W2017139675 doi "https://doi.org/10.2176/nmc.31.641" @default.
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