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A new method for computerized tomography diagnosis of early transtentorial hernia

Chinese Medical Journal 1997年第10期 43-47页

作者：巩若箴周存升史浩柳澄王锡明

Objective To evaluate a new scanning method designed for the diagnosis of early transtentorial hernia as compared with the routine scanning method (parallel to orbitomeatal line). Methods 102 patients with unilateral high intracranial pressure and 100 volunteers without any cranial symptoms and signs were scanned on (1) the plane perpendicular to the plane of clivus and (2) the plane parallel to orbitomeatal line, a line joining the apex of the dorsum sellae and the lowest point of the clivus. Results Vertical to clivus scanning method directly demonstrated the temporal transtentorial hernia in 48 of 102 patients with unilateral high intracranial pressure, but the orbitomeatal line scanning method was not able to show this direct finding. The projected tissue of the temporal lobe could be obviously shown and the degree of the hernia could be judged directly on the CT imaging with the vertical to clivus scanning method. Therefore, the CT diagnosis criterion of the hernia was suggested as follows: the hernia would be determined if the downward shift of the temporal lobe was more than 3 mm and suspected if less than 3 mm with ipsilateral high intracranial pressure. Conclusion This new method presented a superiority in showing the temporal transtentorial hernia for the patients with a cranial emergency.

关键词：周存升 early transtentorial method new computerized hernia 柳澄史浩

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