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目的：探讨正常听骨链ＣＴ仿真内镜（ＣＴＶＥ）和三维（３Ｄ）重建方法及其应用价值。材料和方法：２０例无中耳疾病者采用层厚１．０ｍｍ、螺距１．０轴位薄层扫描，骨算法、０．１ｍｍ－０．２ｍｍ间隔重建，分别做ＣＴＶＥ成像、表面（ＳＳＤ）和骨最大密度投影（ＭＩＰ）３Ｄ重建，观察和比较ＣＴＶＥ和３Ｄ显示正常听骨链的能力。结果：ＣＴＶＥ上，锤、砧骨及锤砧关节显示率都是１００％，镫骨底板显示率为３５％，仅２５％能分辨镫骨前、后脚；ＳＳＤ和ＭＩＰ ３Ｄ成像都能直观地观察锤、砧骨的形态、大小及相互关系，砧镫关节呈“Ｌ”形，镫骨前、后脚及底板显示欠佳。结论：ＣＴＶＥ和３Ｄ成像都能很好地显示正常听骨链的立体影像，ＣＴＶＥ的显示效果优于３Ｄ成像，且简便易行。
Objective: To investigate the methods of CTEM and 3D reconstruction of normal ossicular chain CT and its application value. MATERIALS AND METHODS: Twenty patients without middle ear disease underwent CTVE imaging, surface (SSD) imaging, And bone maximum density projection (MIP) 3D reconstruction to observe and compare the ability of CTVE and 3D to show normal ossicular chain. Results: The CTVE showed 100% display rate of the hammer, incus and hammer anvil, 35% of the stapes and 35% of the stapes, and only 25% could distinguish the anterior and posterior legs of the stapes. Both SSD and MIP 3D imaging can be directly observed Hammer, incus shape, size and interrelationship, anvil 镫 joint was “L” shape, tarsal anterior, posterior legs and floor display poor. Conclusion: Both CTVE and 3D imaging can display the normal three-dimensional images of the ossicular chain. CTVE is superior to 3D imaging and is simple and easy to perform.