目的：找到一种内听道准确的定位方法。
Objective: to find out a precise localization of internal auditory canal.
目的为内听道后前位摄片提供解剖学基础。
Objective to provide the anatomic foundation for dorsoventral X-ray photographs of internal auditory canal.
结果44例共88个部位均能良好地显示内耳及内听道的形态结构。
Results 88 anatomic locations of inner ear structure was displayed clearly in all of 44 cases.
听力的保留与肿瘤大小、术前听力水平、肿瘤内听道底侵蚀、小脑损伤相关。
Hearing preservation was correlation to tumor size, preoperative hearing level, internal auditory canal fundus destroying and cerebellum damaging.
目的：探讨内听道(IAC)斜矢状位MRI在人工耳蜗置入术前评估中的应用价值。
Objective: to explore practical value of oblique sagittal MRI of internal auditory canal (IAC) before cochlear implantation.
结果乙状窦沟、内听道孔、颈静脉孔、耳蜗、岩嵴和后半规管最后点等可作为手术标志。
Results the sigmoid sinus, internal auditory porus, jugular porus, cochlea, petrous ridge and the most posterior point of the posterior semicircular canal could be markers of surgery.
结论3dCISS序列对内耳及内听道的结构及病变显示清晰，具有较高的临床应用价值。
Conclusion 3d CISS sequence can precisely show structures and lesions in inner ear and internal auditory canal, therefore it is of high value in clinical application.
结论枕下乙状窦后经内听道入路的听神经显微手术，能够取得较好的肿瘤全切除率和面听神经功能保留率。
Conclusion Undergoing retrosigmoid approach one can succeed to get hign rate of total acoustic neuroma removal, facial and hearing preservation.
结论枕下乙状窦后经内听道入路的听神经显微手术，能够取得较好的肿瘤全切除率和面听神经功能保留率。
Conclusion Undergoing retrosigmoid approach one can succeed to get hign rate of total acoustic neuroma removal, facial and hearing preservation.
应用推荐