容积再现技术评价中耳炎病例听骨链的完整性

目的 探讨容积再现（volume rendering, VR）技术成像应用于CT检查对于判断鼓室内听骨链周围伴有软组织病灶中耳炎患者听骨链破坏情况的价值.方法 分析38例鼓室内听骨链周围伴有软组织病灶的中耳炎患者术前听骨链的VR三维图像,判断其破坏情况,并将结果和术中所见作对比研究.结果 VR技术诊断锤骨、砧骨、镫骨破坏的敏感性分别为77.8%、75%和87.5%;VR技术诊断锤骨、砧骨、镫骨完整的特异性分别为100%、85.7%和40%.结论 VR技术可以三维直观地显示鼓室内听骨链周围伴有软组织病灶的中耳炎患者的听骨链,在判断其完整性方面有一定的价值.

Evaluation of the ossicular integrity in otitis media by using CT volume rendering

Objective To discuss the value of the technology of volume rendering in assessing the integrity of ossicles in otitis media. Methods A prospective study was conducted in 38 otitis media patients with soft tissues around the ossicles. All the patients accepted the MSCT scan and their ossciles were reconstructed by the technology of VR before operation. The results were compared with those in the operation. Results The sensitivities of the VR technology in the diagnosis of the malleus, incus and stapes destruction were 77.8% ,75% and 87.5% respectively. The specificities of the VR technology in the diagnosis of the ossicles integrity were 100% ,85.7% and 40% respectively. Conclusions The VR technology had a certain value in diagnosing the integrity of the ossicles, especially in showing the whole ossciles using the 3D mode, which could give the doctor a direct conception.