Multilayer spiral CT volumetric representation and surface reconstruction diagnosis frame and the clinical value of rib cartilage minor fractures / 中国综合临床

ABSTRACT

Objective To explore the multislice CT (MSCT) volumetric representation (VR), curved surface reconstruction (CPR) in diagnosis of ribs and rib cartilage of the clinical value of minor fractures.Methods The X-ray films,axial CT,VR,CPR image performance of 112 cases of clinical suspected ribs and costal cartilage minor fractures were retrospective analyzed.The sensitivity, specificity, positive rate and accuracy,negative rate,missed diagnosis and misdiagnosis rate and the diagnostic value in the diagnosis of rib and rib cartilage minor fractures of four examination method were compared and analyzed.Results VR, CPR examination can clearly display the ribs and rib cartilage minor fractures, the diagnostic sensitivity (94.25％, 98.85％), specificity (88.00％, 96.00％), positive rate (96.47％, 98.85 ％) and accuracy (92.85％, 98.21％) of VR and CPR were higher than X-ray and axial CT examination(82.14％ and 88.51％ ,80.00％ and 84.00％, 94.50％ and 96.25％,82.14％ and 87.50％).And the diagnostic value of CPR inspection(the area under the curve) was 0.974, obviously higher than that of X ray film, axial CT, VR, and the difference was statistically significant (0.814,0.863,0.911;P＜0.05).Conclusion MSCT of VR and CPR examination in the diagnosis of rib in minor fractures and rib cartilage has very important clinical value.