전정신경초종수술을 위한 경미로접근법에서 컴퓨터 단층촬영 3차원영상합성의 유용성

Clinical feasibility of three-dimensional reconstruction of computed tomography in translabyrinthine removal of vestibular schwannoma

Background : The purpose of this study was to evaluate the clinical utility of preoperative three-dimensional temporal bone reconstruction in patients for translabyrinthine removal of vestibular schwannoma. Materials and Methods : Prior to commencement of the translabyrinthine approach, critical anatomical structures were traced and three-dimensionally reconstructed using computed tomography (CT) scans of the normal temporal bone. Two patients diagnosed with vestibular schwannoma via magnetic resonance imaging were evaluated in this study. Results : Anatomical reconstruction allowed sequential planning of the translabyrinthine approach. The patient-tailored, preoperative image-guided approach prevented iatrogenic damage by predicting a high jugular bulb or a narrow sinodural angle. Conclusions : Three-dimensional reconstruction illuminates the translabyrinthine approach and identifies difficulties that may be encountered at each step, thus preventing confusion.