1987 Volume 9 Issue 5 Pages 440-447
Four cases of bilateral internal carotid occlusion are reported with respect to clinical features, hemodynamics and various image diagnosis. MRI is applied to three cases.
The patients comprised 2.08% of all cerebral occlusive diseases treated during the past five years at our clinic. One case is of abrupt onset and three cases are progressing profiles. In one of these cases, collateral circulation is supplied mainy by leptomeningeal anastomosis of the posterior cerebral artery and posterior pericallosal artery branching from the basilar artery. In two of them, they are supplied through the circle of Willis.
Middle cerebral artery occlusion, occlusio supra occlusionem, however, causes decisive ischemic lesion in its teritory. Applying MRI, complicated ischemic lesions, such as lacunar infarction, paraventricular lesion, deep white matter lesion and border zone infarction can clearly be identified. In the case of total aphasia, the lesions responsible are demonstrated clearly by MRI, but only vaguely by X-ray CT.
