螺旋CT扫描对未钙化牛肋软骨创伤骨折的实验研究

The research of spiral CT in traumatic fracture of cattle's non-calcified costal cartilage

目的:探讨螺旋CT扫描、最大密度投影(MIP)及三维重建成像(3D-SSD)对未钙化牛肋软骨创伤骨折的临床价值。方法:首先建立牛未钙化肋软骨模型。应用螺旋CT扫描、MIP及3D-SSD对10根未钙化牛肋软骨模型进行检查。然后对33例临床病例进行研究。结果:螺旋CT诊断人未钙化肋软骨骨折的敏感性为93.54%,准确率为93.93%,阳性预测值93.54%,假阳性率3%,假阴性率3%。结论:应用螺旋CT扫描、MIP及3D-SSD对未钙化肋软骨骨折的诊断有着重要临床价值。

Objective： To investigate the clinical value of spiral CT with MIP and 3D-SSD reconstruction in traumatic fracture of non-calcified costal cartilage of cattle. Methods： First, make the model of cattle of non-calcified costal cartilage. Ten fresh non-calcified costal cartilages with inter costal muscle were obtained from cattle killed within 3 hours. And the costal cartilages were examined by spiral CT, MIP and 3D-SSD reconstruction. Secondly, the costal cartilage in 33 clinical cases were studied. Results： The diagnostic sensibility of spiral CT in non-calcified costal cartilage of human individual is 93.54%, accurate rate is 93.93%, positive predictive value is 93.54%, false positive rate 3%, false negative rate is 3%. Conclusion： Spiral CT associated with MIP and 3D-SSD reconstruction have important clinical value in the diagnosis of traumatic fracture of non-calcified costal cartilage.