高分辨率螺旋CT对多导人工耳蜗植入的评估

CT Evaluation of Multichannel Cochlear Implantation

目的 探讨CT检查对人工电子耳蜗植入术前、术后评估的价值。方法 对 4 4例感音性聋患者均采用颞骨轴位高分辨率CT螺旋扫描及内耳三维重建。结果 32例语前聋患者中检出 1例 (2耳 )Mondini畸形Ⅰ型 ,2例 (4耳 )Mondini畸形Ⅱ型 ;12例语后聋患者中检出 2例 (4耳 )慢性化脓性中耳炎 ,1例 (2耳 )内耳骨化 ,1例 (2耳 )耳硬化症 ,3例 (6耳 )大前庭水管综合征。CT检出 1例术后植入电极扭结并感染。结论 CT检查对人工耳蜗植入术前病例的选择、术后植入电极的观察以及并发症的检出均具有重要价值。

Objective To investigate the value of CT as preoperative and postoperative imaging technique for cochlear implant candidates.Methods Axial high-resolution temporal bone CT and three-dimensional reconstruction of inner ear were performed in 44 patients with sensorineural hearing loss. Cochlear view radiography was performed routinely in postoperation cases. CT scanning was performed in 3 postoperation cases.Results There were 1 case (2 ears) with Mondini malformation type Ⅰ, 2 case (4 ears)with Mondini malformation type Ⅱ in 32 patients with prespeech deafness. There were 2 case (4 ears) with chronic suppurative otitis meadia, 1 case (2 ears) with inner ear ossification,3 cases (6 ears)with large vestibular aqueduct syndrome,1 case (2 ear)with cochlear sclerosis in 12 patients with postspeech deafness. 1 case with intracochlear electrode knot and otitis meadia was found by CT.Conclusion CT plays an important role in selecting patients, observing implanted electrode and finding postoperative complication.