MSCT与DR诊断肋骨骨折的对比研究

目的：比较数字X线摄影（DR）和多层螺旋CT（MSCT）在肋骨骨折诊断中的确诊率,评价其在法医临床鉴定中的作用。方法：观察80例肋骨骨折患者的DR正、斜位片,MSCT容积再现（VR）、最大密度投影（MIP）、多平面重组（MPR）及薄层轴位图像,对比分析两种影像学检查方法在肋骨骨折确诊率、漏诊率和疑诊率方面的差异。结果：...

Comparative Study of MSCT with DR for Rib Fracture

Objective： To investigate the diagnostic value of multi-slice spiral CT （MSCT） for rib fracture with digital radiography （DR） in comparison, and further to assess its potential application value in forensic identification. Methods： For 80 patients with rib fructures, th frontal and oblique DR film and MSCT with varied 3D-reconstruction techniques such as volume rendering （VR）, maximum intensity projection （MIP）, multi-planar reformation （MPR） and thin axial images were analyzed retrospectively. The rates of indenified, suspected and missed diagnosis in rib fracture were compared between MSCT and DR. Results： 65 cases with 188 fractures were correctly diagnosed by DR, with the indenified diagnosis rate 73.44% （188/256）, the suspect diagnosis rate 7.44% （19/256） and the missed diagnosis rate 19.14% （49/256）. 79 cases with 253 fractures were correctly diagnosed by MSCT, with the indenified diagnosis rate 98.05% （251/256）, the suspect diagnosis rate 1.17% （3/256） and the missed diagnosis rate 0.78% （2/256）. There is significant statistic difference between DR and MSCT （P〈 0.01） for diagnosis of rib fracture. Conclusion： The display rate of rib fracture with MSCT 3D-reconstruction was much higher than that of DR. DR can be used as a routine screening examination, and MSCT can provide further definite diagnosis and reliable evidence for clinical forensic identification.