多层螺旋CT三维重建在髋关节损伤诊断中的应用价值

目的　探讨多层螺旋CT三维重建成像在髋关节损伤诊断中的价值。方法　利用西门子Sensation 4多层螺旋CT机按照骨盆常规扫描条件对 2 6例骨盆创伤患者进行容积扫描 ,扫描完后再进行薄层低对比及高对比图像重建 ,然后将重建图像导入CT 3D工作站 ,利用后处理软件MPR、MIP、SSD及VRT分别对髋关节进行成像 ,由 2位CT诊断医生一起对各种后处理图像进行观察和分析。结果　全组病例的薄层重建及三维重建显示髋臼骨折 19例 ,股骨上段骨折 8例 ,髋关节脱位 7例 ,关节腔内碎骨片 5例 ,关节周软组织损伤 2 1例。多层螺旋CT三维重建图像能最全面、直观地显示相应的髋关节骨折、脱位及关节腔内骨片情况 ,尤其是MPR及MIP对骨折、脱位、骨碎片显示率为 10 0 %。结论　多层螺旋CT薄层MPR是一种无创伤性显示髋关节形态的最佳方法 ,其相关CT表现可为临床诊断髋关节损伤、制定手术方案提供可靠依据

Apllication of 3D Multi - slice Helical CT in Diagnosis of Hip Trauma

Objective To investigate the applied value of multi-slice CT(MSCT) in diagnosis of hip trauma.Methods The volume scans according to conventional pelvic scan were performed in 26 cases with hip trauma by SIEMENS Sensation 4 MSCT,then the images in thin slice of low and high contrast were reconstructed.After that,all the source images were transfered into CT 3D work stations,images such as multiplanar reconstructions(MPR).Maximum intensity projection(MIP), surface shade display(SSD) and volume rendering technic(VRT) were obtained. All images were observed and analysed by two radiologists.Results All post process images that obtained from the MSCT showed 19 patients with acetabular fractures ,8 with femoral head fractures ,7 with hips dislocation and 5 with piece of fracture in the hip joint. MSCT 3-dimension imaging could produce clear and comprehensive images of hip fracture and dislocation or piece of fracture .The rate of displaying hip trauma with thin slice MPR and MIP was 100%.Conclusion The MSCT thin slice MPR imaging is the best noninvasive imaging method in showing the hip joint. It is of high value in diagnosis of hip trauma in clinical practice.