多层螺旋CT仿真内镜技术在显示正常中耳结构中的应用

Clinical Application of CT Virtual Endoscopy in Middle Ear by Using Multislice Spiral Computed Tomography

目的 研究多层螺旋CT(MSCT)成像对正常中耳结构的影像学表现及临床意义。方法 利用MSCT对 2 1例正常耳进行扫描及中耳结构的立体重建。结果 MSCT的仿真内镜技术 (CTVE)可显示整个中耳结构。CTVE成像对锤骨、砧骨、镫骨头显示率均为 10 0 % ;对镫骨前后角显示率为 90 5 % ;对镫骨底板显示率仅为 38 1%。结论 应用MSCT的仿真内镜成像可明确显示鼓室及听小骨细胞结构 ,为临床诊断和治疗提供重要信息。

Objective To study radiology expression and clinical application of multislice spiral CT (MSCT) on middle ear. Methods The 21 normal ears were scanned by using MSCT and CT virtual endoscopy of middle ear were made. Results CTVE images could display tympanum and auditory ossicles clearly. It could reveal all of malleus, incus and stapedial head, and 90.5% of the anterior posterior crura of stapes but only of 38.1% of stapedial foot-plate. Conclusion Tympanum and auditory ossicles imaging could be displayed exactly by using MSCT and CTVE reconstruction and CT virtual endoscopy could warrant clinical diagnosis and treatment planning.