颞骨解剖结构复杂 ,用普通 CT扫描机 ,难于清晰显示其细微解剖结构 ,使用美国产 PQ50 0 0 A螺旋 CT机对颞骨进行螺旋扫描 ,观察分析其中耳及内耳细微结构 ,主要对鼓室胆脂瘤的诊断问题做一简要分析。1　材料与方法主要采用横轴位 ,辅以冠状位 ,用骨算法重建图像 ,层厚 1.5mm,间 The anatomical structure of the temporal bone is complex. It is difficult to clearly show its fine anatomy with a common CT scanner. The spiral bones of the temporal bone are scanned with a PQ50 0 0 A American CT scanner. The microstructure of the middle ear and inner ear is observed and analyzed. The diagnosis of a brief analysis. 1 materials and methods mainly horizontal axis position, supplemented by coronal, reconstruction algorithm using bone algorithm, layer thickness 1.5mm, between