We describe a rare case where a patient developed intracranial pial arteriovenous (AV) fistula due to dural tenting. The patient was a 63-year-old woman who had undergone neck clipping for an unruptured middle cerebral artery (MCA) aneurysm. The surgery was performed without any problems and her postoperative course was uneventful. Two weeks after cerebral angiography operation revealed a pial ...

Evidence-Basis for Anticoagulants for Cerebral Sinus Venous Thrombosis? To the Editor: The recent case of cerebral sinus venous thrombosis (CSVT) in the US Secretary of State Hillary Clinton brought my attention to articles that lay out the evidence-basis for the use of full dose heparin and oral anticoagulant drugs for CSVT. Unfortunately, articles published in Stroke by investigators from the...

Research on cerebral venous circulation disturbances (CVCDs) has been limited partly by the paucity of animal models that produce consistent venous infarction. Occlusion of two adjacent cortical veins in rats by means of a photochemical thrombotic technique provides a minimally invasive, clinically relevant, and reproducible model suited to study the pathophysiology of CVCDs. In this study, the...

Background: The authors herein report a case of paradoxical cerebral infarction by spraying thrombus in the catheter for dialysis. The clinical manifestations of paradoxical cerebral infarction are nonspecific, and the diagnosis is sometimes difficult to establish. Patients with paradoxical cerebral infarction may present with neurologic abnormalities or features suggesting arterial embolism. A...

BACKGROUND AND PURPOSE The purpose of this study was to evaluate the correlation between appearance of angiographic early venous filling during intra-arterial reperfusion therapy and posttherapeutic hemorrhagic complications. METHODS For the past 7 years, 104 patients prospectively underwent superselective local angiography via a microcatheter before and during intra-arterial reperfusion ther...

rare vascular lesions of the brain. These lesions differ from arteriovenous malformation (AVMs) as they are direct artery to vein connections, have no nidus, and are composed of one or more direct arterial feeders with a single draining vein. Many of these have associated venous varix or giant venous aneurysms (1). Owing to the absence of a nidus, closure of the shunt by either endovascular or ...

Background: Developmental venous anomaly (DVA), previously known as “venous angioma”, is the most common cerebral vascular malformation, but hemispheric DVA is extremely rare. Case presentation: In this article we present a 21-year-old female with a large DVA draining the whole left hemisphere, combined with a vein of Galen varix and falcine sinus. To our knowledge, only 4 cases of hemispheric ...

Automatic separation of arteries and veins in optical cerebral cortex images is important in clinical practice and preclinical study. In this paper, a simple but effective automatic artery-vein separation method which utilizes single-wavelength coherent illumination is presented. This method is based on the relative temporal minimum reflectance analysis of laser speckle images. The validation i...

In this paper a method to extract cerebral arterial segments from CT angiography (CTA) is proposed. The segmentation of cerebral arteries in CTA is a challenging task mainly due to bone contact and vein contamination. The proposed method considers a vessel segment as an ellipse travelling in three-dimensional (3D) space and segments it out by tracking the ellipse in spatial sequence. A particle...

Intracranial pial arteriovenous fistula (AVF) is a rare cerebrovascular malformation, which has a single or multiple arterial connections to a single venous channel without intervening nidus, and is different from arteriovenous malformation (AVM). We report on a case of a surgically treated pial AVF. A 15-year-old girl with an altered mental state was brought to our hospital. Computed tomograph...