先天性内耳发育畸形的MSCT表现

目的：探讨先天性内耳发育畸形的多层螺旋CT（MSCT）表现和特征。方法：采用GE Light Speed16排螺旋CT扫描仪,行螺旋扫描,取层厚0.625mm,Bone Plus骨算法,单侧DFOV9.6cm或7.5cm放大重建,行多平面重建（MPR）和容积再现技术（VR）重建。结果：47例89耳为先天性内耳畸形,其中Michel畸形4例5耳、耳蜗未发育1例1耳、共腔畸形4例6耳、阶间隔Ⅰ型（囊状耳蜗-前庭畸形）1例1耳、耳蜗发育不全Ⅰ型3例4耳、阶间隔Ⅱ型（Mondini畸形）14例24耳、耳蜗发育不全Ⅱ型2例4耳、前庭-半规管畸形5例9耳、前庭导水管扩大29例54耳（其中29耳伴随其他畸形）、内耳道畸形16例26耳（其中21耳伴随其他畸形）、内耳畸形伴颈静脉球高位12例18耳。结论：MSCT检查高分辨图像对先天性内耳骨迷路畸形的诊断、分型以及人工耳蜗植入术的筛查、术后效果评价、随访复查有重要的临床指导意义。是首选的检查方法。

Appearance of Multi Slice CT in Congenital Inner Ear Development Malformations

Objective:To investigate the appearance and characteristics of multi slice CT(MSCT) in congenital inner ear development malformations. Methods :47 cases with sensorinueral hearing loss were examined by GE light speed CT16 scanner with 0.625 mm collimation,bone plus reconstruction way. The axial image of interested ear were constructed with a field of view of 9.6 cm or 7.5 cm,then 3D reconstruction were done with MPR and VR technique on workstation.Results:89 ears of 47 cases were diagnosed in congenital inn...