多层螺旋CT肋软骨成像的对比研究  

Imaging of Costicartilage with Multislice Spiral CT: Comparison of Maximum Intensity Projection, Surface Shaded Display and Volume Rendering

作　　者：王立民[1] 马得廷[1] 郭爱军[1] 

机构地区：[1]山东省泰安市中心医院医学影像中心,山东泰安271000

出　　处：《中国伤残医学》2007年第5期23-25,共3页Chinese Journal of Trauma and Disability Medicine

摘　　要：目的:运用16层螺旋CT的3种后处理技术:最大密度投影(MIP)、表面阴影成像(SSD)和容积重组(VR)对肋软骨的显示状况进行评价,探讨肋软骨的最佳CT成像方法。方法搜集经16层螺旋CT常规胸部容积扫描和薄层低对比图像重建100例,所有病例均应用MIP、SSD及VR对重建图像进行后处理,最后由2名CT诊断医师比较MIP、SSD及VR对肋软骨的显示状况。结果(1)3种重组技术均可显示肋软骨。(2)在显示肋软骨形态方面,VR、MIP成像模式优于SSD成像模式;VR成像模式与MIP成像模式无差异性。结论MIP、VR是显示肋软骨形态的最佳CT成像方式。Objective：To evaluate the visualization of costicartilage with maximum intensity projection （MIP）, surface shaded display （SSD） and volume rendering （VR） techniques using multislice spiral CT （MSCT）, in order to investigate the optimal imaging Methods of MSCT in costicartilage. Methods： 100 normal cases were performed in volume scan according to conventional chest scan by 16 multi-slice CT and in thin slice low contrast image reconstructions, Then all the source images were processed using MIP, SSD and VR techniques. At last, all post-processed images were observed and analyzed by two radiologists. Results： （1）The costicartilage and sternum were seen in each technique. （2）On evaluating the shape of costicartilage, the imaging modes of VR and MIP were better than that of SSD （ZMIP： SSD=-10.125, ZSSD： VRT=-10.201, P=0.000）, but no significant difference was found between that of MIP and VR （ZMIP： VRT=-0.297, P=0.767）. Conclusion： MIP and VRT were the best imaging method to display the shape of costicartilage using MSCT.

关 键 词：体层摄影术 X线计算机 图像处理 计算机辅助 肋软骨 

分 类 号：R655.1[医药卫生—外科学]