BACKGROUND Intracranial atherosclerosis accounts for 8% to 10% of all ischemic strokes, and intracranial angioplasty is increasingly performed to treat stenotic lesions. We report an autopsy case and discuss the effects of intracranial angioplasty for atherosclerotic arteries. CASE DESCRIPTION A 77-year-old patient died 9 days after angioplasty of the left middle cerebral artery as a result o...

There is no doubt that general anesthesia is needed during neuroendovascular interventions such as aneurysm coiling, intracranial stenting, balloon angioplasty (percutaneous transluminal angioplasty), or embolization of arteriovenous malformations. Increasingly, advances in intracranial catheter techniques for endovascular treatment of stroke warrant general anesthesia as well. These microsurgi...

Introduction Several methods in perfusion imaging are able to image perfusion territories of cerebral arteries [1]. Most of them only allow for labeling of extracranial arteries like leftand right-sided carotids or vertebral arteries. However, a clear delineation of the border between smaller territories is not possible and often impedes a reliable diagnosis, e.g. the distinct allocation of the...

The current study is based on an examination of the effect Newtonian blood flow value wall shearing stress intracranial aneurysm using computational fluid dynamics. Blood frequently thought to behave like a in cerebral arteries. It fully described how saccular affects model blood-silver (Ag) nanofluid via artery. regarded as because its rheology. Newtonian, laminar, incompressible, viscous, and...

BACKGROUND AND PURPOSE Clinical trial studies show that plaque eccentricity (symmetry) is among the plaque features that have been associated with more frequent cerebrovascular events. Plaque eccentricity of intracranial atherosclerotic disease is unclear because of lacking of cerebral artery specimens. METHODS 1.5T magnetic resonance imaging was performed in the postmortem brains to scan the...

A therosclerosis occurs in diverse vascular beds and may result in tissue ischemia. Current understanding of ath-erosclerotic disease has been advanced by imaging techniques , such as high-resolution magnetic resonance imaging (MRI; HRMRI)studies of the coronary and carotid arteries. In these vessels, atherosclerotic plaque components can be visualized to risk-stratify patients, select treatmen...

Optical coherence tomography (OCT) technology is a well-established diagnostic tool in multiple fields of medicine. Intravascular OCT has been used for more than decade the clinical imaging coronary arteries, however, its use human cerebrovasculature delayed by challenges posed elevated vascular tortuosity. A novel high-frequency (HF-OCT) probe designed neurovascular was evaluated tortuous, ex ...

The relationships among cerebral blood flow, cerebral blood volume, intracranial pressure (ICP), and the action of cerebrovascular regulatory mechanisms (autoregulation and CO2 reactivity) were investigated by means of a mathematical model. The model incorporates the cerebrospinal fluid (CSF) circulation, the intracranial pressure-volume relationship, and cerebral hemodynamics. The latter is ba...

BACKGROUND The races show different cerebrovascular involvements, for example, the involvement of intracranial arteries are higher among Asians than Caucasians. The aim of this study was to investigate the cerebrovascular stenosis pattern by computed tomography angiography (CTA), which is unprecedented in Iran. METHODS In this study, patients with brain stroke (thrombosis), confirmed by CT sc...

Intracranial atherosclerosis is a major cause of ischemic stroke. Patients with a high degree of stenosis have a significant rate of stroke despite medical therapy. Two randomized trials of stenting have failed to show benefit. Improving periprocedural complication rates and patient selection may improve stenting outcomes. Fractional flow reserve (FFR), intravascular ultrasound (IVUS), and opti...