小脑后下动脉脉络点的X线测量及其定位诊断价值探讨  

Roentgengraphic measurement and diagnostic significance of the choroidal point of the posterior inferior cerebellar artery

作　　者：史德刚[1] 刘栋志[2] 王波[1] 朱世鹏[2] 吴家昌[1] 陈运文[1] 

机构地区：[1]贵阳医学院附院 [2]贵阳市妇幼保健院

出　　处：《贵州医药》1996年第4期193-195,共3页Guizhou Medical Journal

摘　　要：在推动脉造影侧位片上．选择后床突后上缘A、枕骨大孔前缘D、枕内险突B．通过小脑后下动脉脉络点o作AD与AB的垂线．垂足分别为X、O’。100倒排除颅内压增高及后颅窝占位性病变的“正常”推动脉造影片．根据小脑后下动脉颅样的形态分为3组，建立了正常测量值。23例小脑桥脑角占位性病变显示脉络点下移与后移（P＜0．001）。同时用后颅窝其它部位的占位性病变及其它测量方法对照观察．显示上述测量方法简单实用，不受放大率影响，对于判断小脑扁桃体疝及占位性病变的部位有参考价值．同时讨论了影响这些测量方法敏感性的因素。On the lateral film of vertebral angiography. the posterosupe- rior edge of the posterior clinoid process (A) the front edge of foremen magnum (D) and the internal occipital protuber-ance (B) were selected. and two lines perpendicular to AD and AB were drawn through the choroidal point (o) of the posterior inferior cerebellar artery (PICA), with their per-pendicular feet X and O' respeciively. To establish the nor-mal values of the choroidal points, 100 presumably normal vertebral angiographies were divided into three groups accord-ing to the shapes of the cranial loops of the PICAs on lateral film. The choroidal points of 23 cases of space-occupying le-sion in the cerebellopontine angle shown shifting in ferior and posterior as compare with normal values (P<0.001). Simul-taneously . contrast was made against the expansivc lesions in the other places of the cerebcllar fossa and othcr measuring methods applied.The results showed tbat the method mentloned above was useful, slmple and uninftuenced by magnifying rate, and would be of referential value in judging the bernlation of cere-bellar tonsll and tbe location of space-occupying lesion. In the samc time, the factors influencing the scnsitivity of thesc measuring methods were discussed.

关 键 词：小脑后下动脉脉络点 放射照像术测量 脑血管造影 

分 类 号：R816.1[医药卫生—放射医学] R816.2[医药卫生—临床医学]