论文部分内容阅读
椎-基动脉延长扩张症(VBD)是一种依据神经放射学检查诊断的椎-基底动脉伸长和扩张症。根据 Smoker定义:VBD一词只适用于基底动脉位于小脑桥脑角斜坡外缘或鞍上池上方,且其直径大于4.5mm者。 由于VBD与临床症状之间缺乏明确关系,无论损伤性血管造影或极少损伤的CT增强与磁共振成像(MRI)都易出现误诊。目前已可常规采用MRI合用无损伤性磁共振血管造影(MRA)技术,借助血流中的磁性进行诊断。
Vertebrobasilar Artery Extension Dilatation (VBD) is a vertebrobasilar artery extension and dilatation diagnosed by neuroradiological examination. According to Smoker, the term VBD applies only when the basilar artery is located on the outer edge of the cerebellar pontine slope or above the suprasellar, and its diameter is greater than 4.5 mm. Due to a lack of a clear relationship between VBD and clinical symptoms, misdiagnosis of either invasive angiography or minimally invasive CT enhancement and magnetic resonance imaging (MRI) is prone to misdiagnosis. Currently available routine MRI non-invasive magnetic resonance angiography (MRA) technology, with the blood flow in the diagnosis of magnetic.