16排螺旋CT对先天性内耳发育畸形的诊断价值  

Diagnostic Value of 16-slice Spiral CT in Congenital Inner Ear Malformations

作　　者：蒲俊智[1] 章强[1] 宋薇[1] 刘军[1] 李小军[1] 志彦[1] 

机构地区：[1]呼和浩特市第一医院CT室,内蒙古呼和浩特010020

出　　处：《实用放射学杂志》2009年第5期633-636,共4页Journal of Practical Radiology

摘　　要：目的探讨16排螺旋CT对先天性内耳骨迷路发育畸形的诊断价值。方法105例感音神经性耳聋患者接受16排螺旋扫描,取层厚0.625 mm,Bone Plus骨算法,单侧DFOV9.6 cm或7.5 cm放大重建,行MPR和VR重建。结果105例患者中有75例150耳CT显示正常,30例56耳为先天性内耳畸形,包括骨迷路未发育（Michel畸形）4例5耳,耳蜗未发育1例1耳,共腔畸形3例5耳,阶间隔Ⅰ型（囊状耳蜗-前庭畸形）1例1耳,耳蜗发育不全3例4耳,阶间隔Ⅱ型（Mondini畸形）12例21耳,前庭-半规管畸形5例9耳,前庭导水管扩大15例27耳,内耳道畸形12例19耳及内耳骨迷路畸形伴颈静脉球高位10例15耳。结论多排螺旋CT检查对先天性内耳骨迷路发育畸形的诊断具有重要价值。Objective To evaluate the usability of diagnostic value of 16-slice spiral CT in congenital inner ear malformations. Methods 105 cases with sensorineural hearing loss were examined by GE Light speed 16 CT scanner with 0. 625mm collimation, bone plus reconstruction way, the axial image of interested ear were constructed with a field of view of 9.6cm or 7.5cm, then 3D reconstruction were done with MPR and VR technique on workstation. Results There were 75 cases（ 150 ears） were normal among 105 cases, 56 ears in 30 cases were diagnosed as congenital inner ear malformation, including Michei deformity in 4 cases（Sears）, cochlar aplasia in 1 case（ 1 ear）, common cavity deformity in 3 cases（ 5 ears}, incomplete partition types Ⅰ in 1 case（ 1 ear）, hypoplastic cochlea in 3 cases（4 ears）, incomplete partition types Ⅱ （Mondini deformity） in 12 patients （21 ears）, vestibule-semicirclar canal dysplasia in 5 cases（ 9 ears）, enlarged vestibular aqueduct in 15 cases （ 27 ears ）, internal auditory canal deformity in 12 cases （ 19 ears ） and inner ear malformation with high jugular bulb in 10 cases（15 ears）. Conclusion MSCT is of significant value in assessing various congenital inner ear malformations.

关 键 词：内耳 先天性畸形 体层摄影术 X线计算机 

分 类 号：R764.3[医药卫生—耳鼻咽喉科] R814.42[医药卫生—临床医学]