Naito Y, Miura M, Funabiki K, Naito E, Honjo I
Department of Hearing and Speech Science, Graduate School of Medicine, Kyoto University, Japan.
Acta Otolaryngol Suppl. 1997;528:85-90.
Parasagittal surface coil magnetic resonance imaging (MRI) of the internal auditory canal and the inner ear was performed in patients with otoneurological diseases. T2-weighted fast spin-echo sequences, plain and enhanced T1-weighted sequences were used to examine the inner ear and the individual nerves in the internal auditory canal. Normal parasagittal images of the inner ear and the internal auditory canal and 4 patients with otoneurological disorders are presented. Precise location of the acoustic tumor was visualized and postoperative status of the internal auditory canal and the inner ear was assessed by the present method. The cochlear nerve was not identified in a patient with long-standing unilateral deafness. A follow-up study with MRI was performed in a patient with Meniere's disease who underwent endolymphatic-mastoid shunt surgery, showing gradual postoperative shrinkage of the shunted endolymphatic sac. The present method provides a new approach to the assessment of otoneurological disorders.
对患有耳神经科疾病的患者进行了内耳道和内耳的矢状旁面线圈磁共振成像（MRI）检查。采用T2加权快速自旋回波序列、平扫及增强T1加权序列对内耳及内耳道内的各条神经进行检查。展示了内耳和内耳道的正常矢状旁面图像以及4例患有耳神经科疾病的患者。通过本方法可清晰显示听神经瘤的精确位置，并评估内耳道和内耳的术后状况。在一名长期单侧耳聋患者中未识别出蜗神经。对一名接受内淋巴-乳突分流手术的梅尼埃病患者进行了MRI随访研究，结果显示术后分流的内淋巴囊逐渐缩小。本方法为耳神经科疾病的评估提供了一种新途径。
