Bianchi D, Maeder P, Bogousslavsky J, Schnyder P, Meuli R A
Department of Radiology, University Hospital, Lausanne, Switzerland.
Eur Neurol. 1998 Nov;40(4):179-90. doi: 10.1159/000007978.
Magnetic resonance imaging and angiography is the technique of choice in the diagnosis and follow-up of cerebral venous thrombosis: Thrombosis appears as an absence of flow void on spin echo images and lack of signal in angiographic techniques. The thrombus signal intensity is different on T1 and T2 spin echo weighted images and evolves according to hemoglobin degradation. Recognition of pitfalls and artefacts related to the different magnetic resonance imaging techniques employed is essential to interpret dural venous sinus thrombosis. In this paper the imaging of 27 patients with cerebral venous thromboses is reviewed. We describe the type of signal abnormalities, the different types of clot- and flow-related artefacts, and the indirect signs of cerebral venous thrombosis.
血栓在自旋回波图像上表现为血流空洞缺失，在血管造影技术中表现为信号缺失。血栓在T1和T2自旋回波加权图像上的信号强度不同，并根据血红蛋白降解而演变。认识到与所采用的不同磁共振成像技术相关的陷阱和伪像是解释硬脑膜静脉窦血栓形成的关键。本文回顾了27例脑静脉血栓形成患者的影像学表现。我们描述了信号异常的类型、与血栓和血流相关的不同类型伪像以及脑静脉血栓形成的间接征象。
