Arterial stenosis is one of the main vascular diseases that are treated with minimally invasive surgery approaches. The aim this study was to provide a tool support medical doctor in planning endovascular surgery, allowing rapid detection stenotic vessels and quantification stenosis. Skeletonization used improve vessels’ visualization. distance transform obtain linear representation diameter cr...

MANY experimental procedures for local reduction of an arterial lumen have been described. The purposes of experimental arterial stenosis have, in the past, included attempts to develop methods for gradual occlusion of diseased vessels, study of the effects of ischemia on various organs, especially the kidney, and simulation of coarctation of the aorta, as well as study of the effects of stenos...

Vertebral artery origin stenosis is a common occurrence among patients with ischemic events in the vertebral and basilar arterial distribution [1,2]. Of the 407 patients in the New England Medical Center Posterior Circulation Registry, 80 (20%) of patients with ischemic events in the vertebral and basilar arterial distribution had vertebral artery origin occlusion or high-grade stenosis [1]. Tr...

The dominance of the coronary arterial system was determined angiographically in 75 adult patients with isolated aortic stenosis with or without insufficiency, 25 adult patients with pure aortic insufficiency, 51 adult patients with combined aortic stenosis and mitral valve disease, and 44 children with bicuspid aortic valves. There was an unusually high incidence of left dominance in adults wi...

BACKGROUND AND PURPOSE Asian patients with cerebrovascular diseases have more intracranial atherosclerosis and less extracranial carotid artery stenosis compared with white patients. We systemically evaluated the distribution of carotid arterial lesions in Chinese patients with transient monocular blindness (TMB), which was rarely reported. METHODS We prospectively evaluated 105 consecutive p...

The vascular complications, their management and results of treatment in 417 consecutive renal transplantations performed at Taleghani Hospital from September 1989 to December 1997, are presented. There were 7 (1.6%) vascular complications. Among them renal artery stenosis occurred in 2 cases (0.4%), renal artery thrombosis in 2 cases (0.4%), renal vein thrombosis in one case (0.2%), bleed...

With an aim to investigate the effect of externally imposed body acceleration on two dimensional,pulsatile blood flow through a stenosed artery is under consideration in this article. The blood flow has been assumed to be non-linear, incompressible and fully developed. The artery is assumed to be an elastic cylindrical tube and the geometry of the stenosis considered as time dependent, and a co...

BACKGROUND Aggressive statin therapy to reduce low-density lipoprotein (LDL) cholesterol in patients with normal LDL-cholesterol levels reduces the incidence of future cardiovascular events and enhances atherosclerotic regression in the common carotid artery. We tried to quantify changes in flow-mediated dilatation (FMD), inflammatory cytokines, and the severity of carotid arterial stenosis, af...

During the investigation of the effects of hypotensive agents on the pulmonary circulation in mitral stenosis, an unexpected result was observed following the administration of 1-hydrazinophthalazine (apresoline). It was found that in patients with mitral stenosis, this drug caused elevation of the pulmonary arterial pressure, while reducing the systemic arterial pressure. This effect of l-hydr...