特发性突发性耳聋内耳3D-FLAIR信号异常与临床

发布时间：2019-01-26 20:11

【摘要】：目的探讨特发性突发性耳聋内耳3D-FLAIR上信号异常的原因及其临床意义。方法 150例特发性突发性耳聋行内耳3D-FLAIR检查,其中17例(18耳)内耳出现信号异常。详细分析其信号特点,总结其临床症状、听力学检测结果和治疗效果特点,探讨其信号异常的可能原因及临床意义。结果 17例(18耳)中3D-FLAIR及T1WI上均显示内耳不同程度的信号异常。其中4耳(4/18,22.2%)耳蜗及前庭-半规管信号稍增高,同时T1WI上为稍高信号。4耳(4/18,22.2%)耳蜗、前庭-半规管不均匀高信号,其中伴有斑点状高信号影。6耳(6/18,33.3%)耳蜗为稍高信号,而前庭、半规管见斑点状高信号影,2耳(2/18,11.1%)仅在前庭见小点状高信号,2耳(2/18,11.1%)半规管高信号影。3D-SPACE上仅2耳(2/18,11.1%)表现为稍低信号。临床上17例均起病突然,进程快,数小时听力完全丧失,并伴有明显眩晕,治疗后听力恢复差。结论特发性突发性耳聋MRI上FLAIR信号异常者具有相同的临床特点,同时提示预后不良。
[Abstract]:Objective to investigate the causes and clinical significance of abnormal signal on 3D-FLAIR in idiopathic sudden deafness. Methods 3D-FLAIR examination was performed in 150 cases of idiopathic sudden deafness, of which 17 cases (18 ears) showed abnormal signal intensity. The signal characteristics were analyzed in detail, the clinical symptoms, audiological results and therapeutic effects were summarized, and the possible causes and clinical significance of abnormal signals were discussed. Results in 17 cases (18 ears), both 3D-FLAIR and T1WI showed different degrees of signal abnormalities in the inner ear. In 4 ears (4 / 1822%), the signal of cochlea and vestibulo-semicircular canal was slightly increased, while the signal on T1WI was slightly higher. In 4 ears (4 / 18 ~ 22. 2%), the signal intensity of vestibulo-semicircular canal was not even high. In 6 ears (6 / 1833.3%), the cochlea was slightly hyperintense, while the vestibular, semicircular canal showed speckle hyperintense shadow, and 2 ears (2 / 1811.1%) showed only small punctate hyperintense signals in the vestibule. 2 ears (2 / 18 / 11. 1%) showed hyperintense semicircular canal. On 3D-SPACE, only 2 ears (2 / 18 / 11. 1%) showed slightly low signal intensity. All of the 17 cases had sudden onset, rapid progression, complete hearing loss for several hours, and obvious dizziness, and poor hearing recovery after treatment. Conclusion Idiopathic sudden deafness with abnormal FLAIR signal on MRI has the same clinical characteristics and poor prognosis.
【作者单位】：中山大学附属第一医院放射科;中山大学附属第一医院耳鼻喉科;
【分类号】：R764;R445.2

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