成人中耳、内耳解剖结构螺旋CT三维成像

目的：建立成人中耳，内耳解剖结构三维立体图像模型。方法：采用螺旋CT薄层扫描（层厚1mm或2mm)，小视野（FOV=5cm)，密集重建技术（间隔0.2mm或0.5mm)，对90例成人中耳，内耳进行三维成像。包括多平面重组（MPR），最大密度投影（MIP），表面成像（SSD）和仿真内窥镜成像（CTVE）。结果：中耳彭室，听骨链，内耳及内耳道分别三维成像，全面显示了各结构相互关系。表面及内部形态。结论：螺旋CT三维成像能够全面准确观测成人中耳，内耳立体结构。

SCT three-dimensional reconstruction of adult middle ear and inner ear

Objective:To establish an anatomic model of adult middle ear and inner ear by using spiral CT three-dimen-sional (3D)reconstruction.Materials and Methods:The middle ear and inner ear in ninety adult cases were performed by thin slice spiral CT examination with slice thickness of 1mm or 2mm and small FOV(FOV=5cm).The reconstruction tech-niques included MPR,MIP,SSD and CT virtual endoscopy (CTVE).3D reconstruction of the tympanic cavity,auditory ossi-cles,the inner ear and internal auditory canal were performed separately.Results:The relationship of each structure and the superficial as well as internal morphology were shown clearly.Conclu sion:SCT3D reconstruction can provide a complete and accurate visualization of the adult middle and inner ear structures.