硬脑膜静脉池的形态学研究

A morphologic study on dura mater venous pool

观测了２５０例成人硬脑膜标本，结果如下：１．硬脑膜静脉池，按其所在部位，分为４类：①下大静脉池，②小脑幕静脉地，③枕静脉池，④顶静脉池。２．将下矢状窦和大脑大静脉汇合的膨大处，命名为下大静脉池，其形状多种多样，矢状径平均为１５ｍｍ，垂直径平均为１２ｍｍ。３．下大静脉池，可分为两种类型：Ｉ型为双管型，占８７．６％；Ｉ型为三管型，占９．６％；此外，下矢状鬓中途注入上矢状窦者，占２．８％。４．在下大静脉池和直窦起瑞内有孤立或成群的蛛网膜颗粒样结节，出现率为ｌｌ．６％。５．直窦起于下大静脉地的尾端。

he results of the study on,the dura mater venous pool on 250 adult specimens weresu mmerized as follows:l,Dura mater venous pool might have 4 different locations,named as:① inferior great venous pool,②tentorial cerebelli venous pool,③ occipital venous pool and④parietalvenous pool.2.The dilated site where inferior sagittal sinus uniting with the great cerebral veinvaried greatly with an average sagittal diameter about l5 mm and an average vertical diameter of12 mm.3;Inferior great venous pool might have 2 patterns:Pattern I (87.6)%,double-canalpattern,with 2 canals joining into the pool,Pattern I( 9.6%),three-canal pattern,in addition,2.8%of inferior sagittal sinus joined superior sagittal sinus in its midway.4;Arachnoid granula-tion-like nodi were found both in the inferior great venous pool and at the original part of straightsinus with an occurrence rate of ll.6%。5.Straight sinus originated from the caudal end of inferi-or great venous pool.