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目的:探讨磁共振内耳成像在儿童感音神经性耳聋(SNHL)中的应用价值.方法:搜集38例可疑内耳畸形所致SNHL患儿,使用Philips Gyroscan Intera 1.5 T超导磁共振仪,首先进行颅脑常规扫描,排除颅内其他病变后,分别进行3D/T2WI/TSE轴位和B-TFE的超薄斜矢壮位扫描,迷路病变采用MIP重建.结果:16例32耳显示听神经、迷路正常.2例3耳Michel畸型;6例12耳Mondini畸型;12例24耳前庭导水管扩大;20例畸形中有6例12耳同时伴有耳蜗前庭神经信号不同程度的缺失.2例4耳显示内听道狭窄伴蜗神经变细.结论:磁共振内耳成像对诊断儿童先天性SNHL有着重要的价值,对判断患儿内耳迷路及各神经发育情况有着不可替代的作用,是这类患儿进行人工耳蜗置换的术前必要检查.
Objective: To investigate the value of magnetic resonance imaging in children with sensorineural hearing loss (SNHL) .Methods: Thirty-eight children with SNHL caused by suspected inner ear malformation were collected and treated with Philips Gyroscan Intera 1.5T superconducting magnetic resonance scanner After routine craniocerebral scintigraphy and exclusion of other intracranial lesions, 3D / T2WI / TSE axis and B-TFE oblique scan were performed respectively. MIP reconstruction was used to find out the pathological changes.Results: 16 cases of 32 ears showed auditory nerve, 2 cases of Michel deformities in 3 ears, 6 cases of Mondini deformity in 12 cases, 12 cases of 24 cases of vestibular aqueduct enlargement in 6 cases, 6 cases of deformity in 20 cases accompanied with varying degrees of loss of cochlear vestibular signal.2 cases of 4 ears Showing narrow stenosis with narrowing of the cochlear nerve.Conclusion: Magnetic resonance imaging of the ear is of great value in the diagnosis of congenital SNHL in children, which plays an irreplaceable role in judging the labyrinth of the inner ear and various neurological development in children, Preoperative cochlear replacement of the necessary inspection.