Abstract: ［Abstract］ Objective〖HTSS〗〓To explore the unique advantages and  clinical application of volume rendering technique(VR) in reconstruction of ossicular chain.
〖HTH〗〖WTHZ〗Methods〖HTSS〗〓A total of 30 patients with suspected ossicular chain lesions were highresolution volumetric scanned with 64slice spiral CT and reconstructed with VR.
〖HTH〗〖WTHZ〗Results〖HTSS〗〓Among the 30 cases, 10 cases had normal ossicular structure and 20 cases had abnormal ossicular structure(12 cases had ossicular chain injury and 8 cases had abnormal ossicular chain development). The bone structure of malleolus, incus and stapes can be clearly displayed on the images of volume rendering technique, but the visibility of anterior and posterior feet of stapes, hammeranvil joint and stapes joint is lower than that of the multiple plannar reformation image.
〖HTH〗〖WTHZ〗Conclusion〖HTSS〗〓VR can visually display the overall anatomical structure of the ossicular chain and the corresponding position relationship between the ossicles by using the whole volume scan data,which is of great significance for the clinical diagnosis of ossicular chain lesions.

Key words: ear ossicles, reconstruction of ossicular chain, volume rendering technique