正常面神经与Bell面瘫面神经MR增强的对照研究

发布时间：2018-04-27 16:58

本文选题：Bell + 面瘫　；参考：《临床放射学杂志》2017年10期

【摘要】：目的探讨正常面神经与Bell面瘫面神经各节段的强化方式。方法选取17例临床诊断为Bell面瘫的患者为面瘫组,12例年龄相当的无面神经症状而由于其他脑部病变前来做脑部MR增强的患者为正常面神经对照组。面瘫组与正常组均进行横轴位快速三维扰相梯度回波序列(3D-FSPGR)T_1WI平扫及增强、横轴位快速自旋回波序列(FSE)T_2WI,横轴位稳态采集快速成像序列(FIESTA)。将面神经分为用于评估强化程度的5个节段,并对各节段面神经强化程度进行0~3级的分级标识。结果面瘫组76.5%(13/17)患侧面神经内听道底段强化,88.2%(15/17)患侧面神经迷路段强化,而健侧面神经此两段强化率分别为17.6%(3/17)、11.8%(2/17);健侧与患侧的膝状神经节强化率均为70.1%,但是强化程度却大不相同;35.3%(6/17)患侧面神经鼓室段强化,29.4%(5/17)健侧面神经鼓室段强化;41.2%(7/17)患侧面神经乳突段强化,35.3%(6/17)健侧面神经该段强化。正常面神经对照组双侧正常面神经强化节段及强化程度均一致。其中膝状神经节75%(9/12),鼓室段16.7%(2/12),乳突段50%(6/12),内听道段和迷路段均为8.3%(1/12)。结论正常面神经膝状神经节最易强化,且各节段强化程度均为双侧对称性;Bell面瘫患侧面神经较对侧均有异常强化节段,且易见于内听道段底段,迷路段及膝状神经节。
[Abstract]:Objective to explore the enhancement mode of normal facial nerve and Bell facial paralysis facial nerve. Methods 17 patients with Bell's facial palsy were selected as normal facial nerve control group. 12 patients with similar age without facial nerve symptoms and other brain lesions were selected as normal facial nerve control group. 3D-FSPGRG T 1WI plain scan and enhancement were performed in both the normal group and the normal group. The fast axial spin echo sequence FSET 2WI, the steady state fast imaging sequence FIESTAI in transverse axis position were performed. The facial nerve was divided into 5 segments to evaluate the degree of enhancement. Results in the facial palsy group, 76.5% 13 / 17) the inferior segment of the auditory canal in the affected side of the facial nerve was enhanced 88.2 / 17) the labyrinthine segment of the affected side of the facial nerve was enhanced. The enhancement rate of the two segments of the healthy side facial nerve was 17.6 / 17 / 11.8 respectively; the enhancement rate of the geniculate ganglion of the healthy side and the affected side was 70.1, but the degree of enhancement was quite different (35.3R / 6 / 17) the tympanum segment of the affected side was enhanced 29.455 / 17) the tympanum segment of the healthy side of the facial nerve was enhanced 41.2% of the tympanum of the healthy side and 7 / 17 of the affected side. Neuromastoid segment was enhanced by 35. 3 / 17) the contralateral facial nerve was strengthened in this segment. The enhancement level and degree of bilateral normal facial nerve in the normal facial nerve control group were the same. In the geniculate ganglia, the geniculate ganglia 75 / 9 / 12, the tympanum 16.725 / 12, the mastoid 50 / 12, the auditory canal and the labyrinth 8.3 / 12. Conclusion the geniculate ganglion of normal facial nerve is the most easily enhanced, and the degree of enhancement in each segment is bilateral symmetry. There is abnormal enhancement of facial nerve in the affected side of Bell's facial palsy than in the opposite side, and it is easy to be seen in the distal segment of the internal auditory canal, the vagal segment and the geniculate ganglion.
【作者单位】：郑州大学附属洛阳中心医院影像科磁共振室;
【分类号】：R445.2;R745.12

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