ENHANCEMENT ALONG THE NORMAL FACIAL-NERVE IN THE FACIAL CANAL - MR IMAGING AND ANATOMIC CORRELATION
ENHANCEMENT ALONG THE NORMAL FACIAL-NERVE IN THE FACIAL CANAL - MR IMAGING AND ANATOMIC CORRELATION
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DOI：
10.1148/radiology.183.2.1561339
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发表时间：
1992-05-01
期刊：
影响因子：
19.7
通讯作者：
NIPARKO, JK
中科院分区：
文献类型：
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作者：
GEBARSKI, SS;TELIAN, SA;NIPARKO, JK
据报道，正常的面神经在磁共振（MR）成像中没有显示出增强，这与作者的临床经验相矛盾。为了研究这种不一致性，作者检索了MR成像文件和临床记录，以找到在静脉注射钆喷酸葡胺前后接受颞骨MR成像（1.5 T）且双侧面神经临床正常的患者。对93例患者（186条面神经）的MR图像进行主观分析时，142条（76%）面神经在面神经管内至少沿一段面神经有明显的沿着强化;其中64条（69%）面神经的强化呈左右不对称性，沿每条神经沿着分布不均匀。面神经在桥小脑角池和内听道，以及在颅外面神经的近端部分，显示没有增强。与参考解剖切片的比较表明，这种增强模式完全对应于周围神经的面动静脉丛的地形，不一定被认为是解剖异常的迹象。
Normal facial nerves are reported to show no enhancement at magnetic resonance (MR) imaging, in contradiction to the authors' clinical experience. To investigate this inconsistency, the authors searched MR imaging files and clinical records to find patients who underwent MR imaging of the temporal bone (at 1.5 T) before and after intravenous administration of gadopentetate dimeglumine and who had bilateral clinically normal facial nerves. When the MR images of 93 patients (186 facial nerves) were analyzed subjectively, 142 nerves (76%) were visibly enhanced along at least one segment of the facial nerve within the facial canal; the nerves of 64 of the 93 patients (69%) showed right-left asymmetry in enhancement, which was inhomogeneously distributed along each nerve. The facial nerve in the cerebellopontine angle cistern and in the internal auditory canal, as well as in the visualized proximal portion of the extracranial facial nerve, showed no enhancement. Comparison with reference anatomic sections showed that this enhancement pattern corresponded exactly to the topography of the circumneural facial arteriovenous plexus and should not necessarily be considered a sign of anatomic abnormality.