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目的：探讨正常听骨链的ＣＴ 仿真内窥镜（ＣＴＶＥ）和三维（３Ｄ）成像方法及其价值。 方法：２０ 例无中耳疾病的健康人，层厚１ ｍ ｍ 、螺距１．０ 轴位薄层扫描，骨算法，０．１ ｍ ｍ 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，锤骨、砧骨及锤砧关节的显示率都是１００％ ，镫骨底板的显示率为３５％ ，只有 ２５％ 能分辨镫骨的前、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３ Ｄ 成像，且简便易行。
Objective: To explore the value of CT virtual endoscopy (CTVE) and three-dimensional (3D) imaging of normal ossicular chain. Methods: Twenty healthy people without middle ear disease were examined by thin layer scanning (MSCT), thickness of 1 m, pitch of 1.0 mm, bone algorithm and 0.1 m reconstruction. 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 malleus, incus and hammer anvil. The display rate of the stapes was 35%. Only 25% could distinguish the anterior and posterior legs of the tarsal bone. Both SSD and MIP 3D imaging Can visually observe the hammer, incus shape, size and correlation, anvil 镫 joint was “L” shape, stapes front and rear legs and floor display poor. Conclusion: Both CTVE and 3D imaging can well show the stereoscopic images of normal ossicular chain. The CTVE is superior to 3 D imaging and is simple and easy to perform.