中脑导水管的正常位置。第1部分：导水管对鞍背测量的意义。

Normal position of the aqueduct of Sylvius. Part 1: significance of aqueduct to dorsum sellae measurements.

作者信息

Krogness K G

出版信息

J Neurosurg. 1975 May;42(5):499-502. doi: 10.3171/jns.1975.42.5.0499.

DOI:10.3171/jns.1975.42.5.0499

Abstract

The author describes a method for estimating the position of the aqueduct of Sylvius based on the ratio of the measured distance from surface to aqueduct (A) to that from the surface to dorsum sellae (B). The normal ratio A:B is 0.72 with a range from 0.68 to 0.75. Values below 0.68 indicate a dorsally displaced aqueduct.

摘要

作者描述了一种基于测量的从表面到中脑导水管的距离（A）与从表面到鞍背的距离（B）的比值来估计中脑导水管位置的方法。正常的A:B比值为0.72，范围是0.68至0.75。低于0.68的值表明导水管向背侧移位。