Doppler analysis of flow in intracranial arteries is now possible using a 2 MHz probe allowing sufficient penetration of bone to obtain signals noninvasively. Thirty-two normal subjects, and 11 patients with cerebrovascular diseases including vasospasm following subarachnoid hemorrhage, middle cerebral artery stenosis, and extracranial internal carotid artery stenosis were studied by transcrani...

Each year, more than 700,000 Americans have strokes. In about one-third of these cases, the cause is an occlusion in the internal carotid artery, middle cerebral or anterior cerebral arteries, vertebral artery, or basilar artery. Without recanalization, the outcome from these occlusions is devastating; this population accounts for all deaths due to ischemic stroke, 80% of those who go to rehabi...

BACKGROUND AND PURPOSE We hypothesized that permanent stenting may be a rescue treatment for stentriever-failed anterior circulation large artery occlusion. We compared the outcomes among patients with permanent stenting and those without stenting after stentriever failure. METHODS We retrospectively evaluated 208 patients who underwent stentriever thrombectomy for anterior circulation large ...

Fetal-type or fetal posterior cerebral artery (FPCA) is a variant of cerebrovascular anatomy in which the distal posterior cerebral artery (PCA) territory is perfused by a branch of the internal carotid artery (ICA). In the presence of FPCA, thromboembolism in the anterior circulation may result in paradoxical PCA territory infarction with or without concomitant infarction in the territories of...

Content/Summary Low pulsatile or non-pulsatile cerebral perfusion was noted in patients with aortic arch dissection, acute proximal internal carotid or common carotid artery occlusion and means impending large cerebral infarction. A 45-year-old man had a sudden aphasia and left hemispheric symptoms with NIHSS of 16 on arrival. Complete occlusion of left middle artery with leptomeningeal collate...

We present the case of an anomalous origin of the left anterior cerebral artery (ACA) from the supraclinoid segment of the right internal carotid artery. Because of improved imaging quality, anomalies of the ACA-anterior communicating artery (AComA) complex are increasingly recognized on transaxial images. Although most of these anomalies are incidental findings of little clinical significance,...

Medium-vessel occlusions (MeVOs), that is, of the M2/3 middle cerebral artery, A2/3 anterior and P2/3 posterior artery segments, account for 25%–40% all acute ischemic stroke cases. Clinical outcomes MeVO with intravenous thrombolysis, which is current standard care, are moderate at best. With improving imaging technologies a growing literature, MeVOs increasingly recognized as target endovascu...

BACKGROUND We performed this study to semi-quantitatively characterize the formation of leptomeningeal collaterals in acute middle cerebral artery (MCA) occlusion caused by intravascular balloon inflation. METHODS The anatomic extent of leptomeningeal collateral blood flow from the anterior cerebral artery territory to the MCA territory during occlusion of the M1 segment was graded based on a...

Aim: To measure the bony carotid canal diameters in people without any cerebral vascular variations or aneurysms that would affect and to determine whether of width could be an indicator aneurysyms variations. Material Methods: Seven-hundred neck-brain CT angiographies were assessed retrospectively. Of patients, 283 (40.4%) women 417 (59.6%) men. Bilateral diameter was measured. Cerebral record...

BACKGROUND Aneurysmal rupture causing pure acute subdural hematoma (aSDH) is rare. In the four previously reported cases of distal anterior cerebral artery (ACA) aneurysm resulting in pure aSDH, blood distribution in the interhemispheric (IH) space has systematically incriminated the distal ACA as the source of rupture. We present a misleading case of a distal ACA rupture resulting in convexity...