BACKGROUND AND PURPOSE Malignant middle cerebral artery infarction is estimated to occur in 10% of ischemic strokes, but few patients undergo decompressive hemicraniectomy, a proven therapy. We determined the proportion of patients with ischemic stroke without significant baseline disability with large middle cerebral artery infarction who would have been potentially eligible for hemicraniectom...

An aneurysm at the junction of the accessory middle cerebral artery and the horizontal portion of the anterior cerebral artery is reported. The importance of this anomalous artery is discussed with regard to the genesis of aneurysms of the anterior cerebral artery.

BACKGROUND While it is known that posterior cerebral artery (PCA) infarction may simulate middle cerebral artery (MCA) infarction, the frequency and localization of this occurrence are unknown. OBJECTIVE To determine the frequency of PCA infarction mimicking MCA infarction and the territory of the PCA most commonly involved in this simulation. DESIGN We studied 202 patients with isolated in...

Middle Cerebral Artery Embolectomy and Prolonged Widespread Vasospasm • Cerebral vasospasm following subarachnoid hemorrhage due to ruptured aneurysms has been discussed extensively during the past decade. Spasm involving the cerebral arteries also has been described in severe head injuries, infections, hypertensive encephalopathy and migraine. However, it has not been reported in cerebral embo...

BACKGROUND AND PURPOSE Epidemiological study of middle cerebral artery occlusion is important because the indication for extracranial-intracranial arterial bypass remains in dispute. To help clarify this issue, we investigated the prognosis of thrombotic middle cerebral artery occlusion in Japanese patients. METHODS We studied 40 patients with thrombotic middle cerebral artery occlusion who w...

An accessory middle cerebral artery (AMCA) is a variation of the cranial vascular system. It usually originates from the anterior cerebral artery, particularly from its proximal part and supplies the orbitofrontal and prefrontal regions of the territory of the middle cerebral artery (MCA). It is reported in approximately 3% of dissections (Teal et al., 1973; Yasargil, 1984; Umansky et al., 1988...

BACKGROUND AND PURPOSE Transcranial Doppler blood flow velocities are inversely related to age and hematocrit, but the relative importance of age, oxygenation, and hemorheological factors has not previously been examined. We evaluated the relative contributions of these factors to middle cerebral artery blood flow velocity in adults with chronic renal failure, a population subject to significan...

BACKGROUND AND PURPOSE Ischemic tissue damage is heterogeneous, resulting in complex patterns in the widely used diffusion-weighted MRI. Our study examined the spatiotemporal characteristics of diffusion kurtosis imaging in an animal model of transient middle cerebral artery occlusion. METHODS Adult male Wistar rats (N=18) were subjected to 90 minutes middle cerebral artery occlusion. Multipa...