Wiggli U, Benz U F
Radiology. 1978 Jul;128(1):65-70. doi: 10.1148/128.1.65.
To assess normal variants of the suprasellar subarachnoid space, 680 CT scans were reviewed. Three main configurations with subgroups of the suprasellar cistern could be found: a large hexagon (60.7%), a small hexagon (17.6%) and a small tetragon (21.7%). In about a third of the scans, the region of interest was not visualized sufficiently. The large variety of CT appearance of the normal suprasellar space could be attributed to anatomical and technical reasons. To exclude a suprasellar mass lesion it is necessary to be aware of the anatomical variations, investigate the suprasellar region with additional intermediate cuts or contrast enhancement and define the cut level and osseous structures by a lateral skull radiograph.
为评估鞍上蛛网膜下腔的正常变异，回顾了680例CT扫描。发现鞍上池有三种主要形态及其亚组：大六边形（60.7%）、小六边形（17.6%）和小四边形（21.7%）。约三分之一的扫描中，感兴趣区域显示不充分。正常鞍上间隙CT表现的多样性可归因于解剖学和技术原因。为排除鞍上占位性病变，有必要了解解剖变异，通过额外的中间层面扫描或增强扫描来研究鞍上区域，并通过头颅侧位片确定扫描层面和骨性结构。
