【摘要】 目的 利用计算机体层摄影静脉造影（computed tomographic venography,CTV）对大脑内静脉进行分型。方法 对36例（72侧）脑深静脉未有明显异常患者的CTV图像进行分析，利用最大密度投影和多平面重建技术，观察大脑内静脉3大属支（透明隔静脉、丘纹静脉和外直静脉）的组成情况，进行相应的分型并分析性别和侧别差异。结果 根据透明隔静脉汇入方式将大脑内静脉分为三型：注入静脉角附近（Ⅰ型，81.94%）、注入静脉角后方（Ⅱ型，12.50%）、透明隔静脉缺乏（Ⅲ型，5.56%）；根据丘纹静脉的变异情况将大脑内静脉分为三型：正常丘纹静脉（1型，77.78%），丘脑上外直静脉（2型，15.28%），丘脑后外直静脉（3型，6.94%）。其中右侧Ⅲ型大脑内静脉的出现率显著高于左侧，余无性别和侧别差异。结论 大脑内静脉属支的不同汇合模式变异大，术前CTV能够准确评价其分型，从而有利于神经外科经侧脑室和第三脑室手术入路的开展。更多还原

【Abstract】 Objective:To classify the internal cerebral vein by computed tomographic venography(CTV).Methods:The CTV images from 36 patients(72 sides) with no obvious abnormality of deep cerebral vein were analyzed. The composition of three main branches of internal cerebral vein(septal vein,thalamostriate vein and lateral direct vein) were observed by maximum density projection and multiplanar reconstruction technology. The corresponding classification and their gender or side differences were analyzed. Results:The internal cerebral veins were divided into three types according to the junction of septal vein:near vein angle(type Ⅰ,81. 94%),behind vein angle(type Ⅱ,12. 50%),and absence of septal vein(type Ⅲ,5. 56%). According to the variation of thalamostriate vein,the internal cerebral veins were divided into three types:normal thalamostriate vein(type 1,77. 78%),suprathalamic lateral direct vein(type 2,15. 28%),and retrothalamic lateral direct vein(type 3,6. 94%). Among them,the occurrence of type Ⅲ internal cerebral vein on the right side was significantly higher than that on the left side,and there was no gender or side difference in the rest type. Conclusion:The different confluence patterns of branches of internal cerebral vein vary greatly,and CTV can classify the internal cerebral vein accurately before operation,which is beneficial in planning approaches to lateral ventricle and third ventricle.更多还原