Himi T, Kataura A, Sakata M, Odawara Y, Satoh J I, Sawaishi M
Department of Otolaryngology, Sapporo Medical University, School of Medicine, Japan.
ORL J Otorhinolaryngol Relat Spec. 1996 Nov-Dec;58(6):298-300. doi: 10.1159/000276857.
Recent advanced techniques for the reconstruction of three-dimensional (3D) images allow further visual recognition of the fine structures of the temporal bone. We demonstrate the advantages of reconstruction 3D imaging in helical CT scans of the normal temporal bone and in patients who have received cochlear implants. After the temporal bone was scanned in the axial plane in the helical scan mode, the data were transferred to a workstation and 3D reconstruction was performed. The normal temporal bone structures were well recognized on these 3D images. The spatial relationship between the lymphatic space of the inner ear and the electrode array is visible. This method provides a detailed anatomy of the insertion of the electrodes into the cochlea and provides precise images of electrode routes by means of varying the angles of view on the computer display. Individual electrodes could not be distinguished. The information from 3D images may be useful not only for pre-but also postoperative investigations in cochlear implantation.
近期用于三维（3D）图像重建的先进技术使颞骨精细结构的视觉识别更进一筹。我们展示了3D成像重建在正常颞骨螺旋CT扫描以及接受人工耳蜗植入患者中的优势。在螺旋扫描模式下对颞骨进行轴向平面扫描后，将数据传输至工作站并进行3D重建。在这些3D图像上，正常颞骨结构清晰可辨。内耳淋巴间隙与电极阵列之间的空间关系清晰可见。该方法能详细显示电极插入耳蜗的解剖结构，并通过在计算机显示屏上改变视角提供电极路径的精确图像。无法区分单个电极。3D图像提供的信息不仅对人工耳蜗植入术前评估有用，对术后评估也有帮助。
