侧脑室粘合的CT表现

目的 探讨侧脑室粘合的CT表现。资料与方法 回顾性分析正常人颅脑CT片1000例，将额角变窄变形和／或透明间隔移位者列为侧脑室粘合。结果 正常人中侧脑室粘合发生率为11．9％，无性别差异，右侧发生率是左侧的2．4倍；可分为单侧型(99．16％)和双侧型(0．84％)，单侧型又可分为：前角变窄 透明间隔移位型(46．2％)、前角融合型(38．65％)、前角粘合型(11．76％)、透明间隔腔型(2．5％)4型。结论 侧脑室粘合是正常变异，突出的特点是透明间隔移位必然伴有同侧额角的变窄变形，并且透明间隔始终呈直线走行。

CT Manifestations of Lateral Ventricle''''s Fusion and Adherence:An Analysis of 119 Cases

Objective To discuss CT manifestations of the fusion and adherence of the lateral ventricles (FALV).Materials and Methods Cranial CT scans of 1000 normal individuals were retrospectively reviewed. Distorted, coarctated frontal horns and/or shifted septum pellucidum were defined as FALV. Results In normal population, the incidence of FALV was 11.9% and showed no significant difference between male and female. The occurrence of the right side was 2.4 times of that of the left side. FALV could be classified into two types: unilateral (99.16%) and bilateral (0.84%). Unilateral type could be further divided into four subgroups: (1) coarctated frontal horn with shifted septum pellucidum (46.2%), (2) fused lateral ventricle (38.65%), (3) adhered lateral ventricle (11.76%), and (4) cavitation of septum pellucidum (2.5%).Conclusion FALV can be regarded as a normal variation. The most characteristic CT sign of FALV is that the shifted septum pellucidum is definitely accompanied with ipsilateral distorted and coarctated frontal horn, while the course of septum pellucidum is always a straight line.