Flow-mediated dilatation has been described mainly in peripheral conduit arteries. The goal of this study was to examine mechanisms and functional implications of flow-mediated dilatation in large cerebral arteries in vivo. Vessel diameter and velocity of blood flow through the basilar artery were measured using a cranial window in 45 anesthetized rats. Mean blood flow velocity through the basi...

Carotid artery stenosis is the narrowing of lumen (inner surface) carotid artery. Usually caused by atherosclerosis, which an atheromatose plaque due to inflammation consisting necrotics, fats and cholesterol crystals. Occlusion arterial lumens makes brain lack blood supply causing damage function. Sometimes, a long period can cause permanent vascular tissue in brain. Stenosis also poses danger...

Purpose: We performed the present study to determine whether the site of cardioembolic occlusion in the carotid axis could be identified by end-diastolic velocity measurements of the common carotid arteries. Summary of Report: Using duplex carotid ultrasonography, we measured the flow velocity in the common carotid arteries and calculated the side-to-side ratios of the end-diastolic velocity (E...

the branches of external carotid artery were dissected and studied in six one humped camels.these specimens were preparated from slaughterhouse and fixed in10% formaline. the common carotid artery in one humped camel is divided into three branches , including , occipital artery , internal carotid artery and external carotid artery which in this respect it was similar to that of equine. external...

Background and purpose Despite advances in endovascular therapies, some patients experience vertebral artery stenosis or subclavian occlusion may not benefit from less-invasive angioplasty/stenting. This study described 4 cases which carotid-vertebral transposition (CVT) carotid-subclavian (CST) was adapted when treatment unfeasible unsuccessful. Presentation Case 1: A 65-year-old woman present...

A retrospective, single-center study was performed in Berlin between January 2012 and December 2019. total of 179 patients with atherosclerotic disease (51% unilateral internal carotid artery [ICA] occlusion; 49% multivessel disease) had undergone extracranial to intracranial bypass for symptoms that occurred within the previous 4 months, including recurrent minor ischemic stroke or transient a...

Background: Acute ischemic stroke caused by internal carotid artery (ICA) occlusion usually has a poor prognosis, especially the T occlusion cases without functional collaterals. The efficacy of intravenous (IV) or intra-arterial (IA) thrombolysis with recombinant tissue plasminogen activator (rt-PA) remains ambiguous in these patients. Eendovascular recanalization of the occluded carotid has b...