نتایج جستجو برای: venous sinus
تعداد نتایج: 109845 فیلتر نتایج به سال:
BACKGROUND The purpose of this study is to demonstrate the advantages of gradient echo (GRE) sequences in the detection and characterization of cerebral venous sinus thrombosis compared to conventional magnetic resonance sequences. METHODS A total of 17 patients with cerebral venous thrombosis (CVT) were evaluated using different magnetic resonance imaging (MRI) sequences. The MRI sequences i...
Persistent left superior vena cava is a congenital vascular anomaly, which is possibly arrhythmogenic and thrombogenic, rarely complicated with coronary sinus atresia. We treated a 42-year-old male with Hodgkin's lymphoma requiring central venous catheter placement for intensive chemotherapy. Persistent left superior vena cava was revealed after the insertion of the central venous catheter by t...
Cerebral sinus venous thrombosis is an uncommon cause of stroke. Three factors usually predispose to venous thrombosis: hypercoagulability states, venous stasis, and blood vessel wall changes.1--3 In patients with thyrotoxicosis, the increased activity of factor VIII,4 amongst others, results in a hypercoagulability state and has been reported as being a factor which predisposes to cerebral sin...
BACKGROUND AND PURPOSE Signs suggestive of unexpected dural venous sinus thrombosis are detectable on routine MR imaging studies without MRV. We assessed performance characteristics and interrater reliability of routine MR imaging for the diagnosis of dural venous sinus thrombosis, focusing on the superior sagittal, transverse, and sigmoid sinuses. MATERIALS AND METHODS This case series inclu...
Bilateral thalamic dysfunction secondary to venous congestion may result from either venous sinus thrombosis or high flow arteriovenous malformations or a combination of both. We present a case of bilateral thalamic edema resulting from concomitant choroid plexus arteriovenous malformation (AVM) and straight sinus thrombosis and describe our treatment approach. The patient presented with severa...
YSTEMIC venous anomalies, such as persistent left superior vena cava and absent inferior vena cava, are not so rare in various congenital heart diseases.1) Preoperative identification of these anomalous systemic venous connections is clinically important, because their presence necessitates modified technique for venous cannulation of cardiopulmonary bypass. In cases of persistent left superior...
Patients with inflammatory bowel disease (IBD) have an elevated risk of venous thromboembolism compared with the general population. The most common sites of venous thromboembolism in IBD patients are the deep veins of the legs, the pulmonary system, and portal and mesenteric veins. However, cerebral venous thrombosis is rarely associated with IBD. This report describes a case of cerebral venou...
QUESTIONS UNDER STUDY Dural sinus occlusion is an infrequent but potentially devastating cause of stroke. The pathophysiological course of events underlying it is, as yet incompletely understood. METHODS In a cat model, regional cerebral blood flow (CBF) was measured during control and 2, and 24 hours after superior sagittal sinus occlusion. Around 48 hours after superior sagittal sinus occlu...
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