Abstract: Objective  To evaluate the consistency of MRV and MRI for the diagnosis of cerebral venous sinus thrombosis (CVST), and to study MRV performance of normal people and venous sinus variation performed by MRV.  Methods  Both MRI and MRV examinations were performed in 29 CVST patients to explore the diagnostic coincidence rate. Eleven normal controls were collected to recieve MRI and MRV examinations, and the variability of blood flow and connection mode in intracranial venous sinus was observed.  Results  Coincidence rate was 92.59% (25/27) in the 3.0T, and was 88.24% (15/17) in the 1.5T. The major sinus variation of the normal controls was mainly located in the transverse sinus. Among 11 normal controls, 5 persons had almost the same thickness of bilateral transverse sinus, 5 had thicker
right transverse sinus, and 1 had thicker left transverse sinus.  Conclusions  MRV has a high coincidence rate with MRI in the diagnosis of CVST, but it can not distinguish the inherent variability, which can be judged when combined with MRI scan. Variation in brain venous sinus of normal people is mainly concentrated in transverse sinus. Traditional view believes that left transverse sinus can be thinner than the right. However, based on current data, right transverse sinus can be thinner than the left.

Key words: Sinus thrombosis, intracranial, Cerebral veins, Magnetic resonance imaging, Magnetic resonance angiography

摘要： 目的 评价MRV 与MRI 诊断颅内静脉窦血栓形成的一致性，观察正常人MRV 表现及其静脉窦变异情况。方法 共29 例颅内静脉窦血栓形成患者行MRI 和MRV 检查，计算二者诊断一致性；同时观察11 例正常对照者颅内静脉窦在血流和连接方式等方面的变异情况。结果 MRV 与MRI 诊断颅内静脉窦血栓形成的一致率：3.0T 为92.59%（25/27）、1.5T 为88.24%（15/17）。正常对照者静脉窦变异主要集中在横窦，11 例中双侧横窦显影粗细大致相同5 例、右侧横窦较粗5 例、左侧横窦较粗1 例。结论 MRV 与MRI 诊断颅内静脉窦血栓形成具有较高的一致性，但对于先天性变异无法区分，需结合MRI综合分析。正常人静脉窦变异主要集中在横窦，传统认为右侧横窦可较左侧横窦粗，但根据目前数据也可出现右侧横窦比左侧横窦细的情况。

关键词: 窦血栓形成, 颅内, 脑静脉, 磁共振成像, 磁共振血管造影术