Downs D M, Damiano T R, Rubinstein D
Department of Radiology, Fitzsimons Army Medical Center, Aurora, Colorado, USA.
AJNR Am J Neuroradiol. 1996 Feb;17(2):237-41.
To characterize the appearance of the gasserian ganglion on contrast-enhanced MR images.
We retrospectively reviewed the MR images from 57 patients with suspected pituitary disease. These patients had undergone unenhanced and contrast-enhanced MR imaging of the sella, including evaluation of Meckel's cave. None of the patients had clinical signs or symptoms referable to the fifth cranial nerve or ganglion. Correlation was made with a previous study that compared gross anatomy with high-resolution CT scans of cadaveric specimens.
A discrete semilunar enhancing structure within the inferolateral aspect of Meckel's cave was identified in 100 of the 114 caves examined; the other 14 caves had a thickened area of enhancement that blended with the dura inferolaterally. A small semilunar structure within the inferolateral aspect of Meckel's cave was also identified on CT scans of the cadaveric specimens.
The gasserian ganglion enhances on MR images and should not be confused with a pathologic process.
描述在对比增强磁共振成像（MR图像）上三叉神经节的表现。
我们回顾性分析了57例疑似垂体疾病患者的MR图像。这些患者均接受了蝶鞍的平扫和对比增强MR成像，包括对Meckel腔的评估。所有患者均无与第五颅神经或神经节相关的临床体征或症状。与之前一项将大体解剖与尸体标本高分辨率CT扫描进行对比的研究进行了相关性分析。
在114个被检查的Meckel腔中，100个在其下外侧发现了一个离散的半月形强化结构；另外14个Meckel腔有增厚的强化区域，在下外侧与硬脑膜融合。在尸体标本的CT扫描中也在Meckel腔下外侧发现了一个小的半月形结构。
三叉神经节在MR图像上有强化表现，不应与病理过程相混淆。
