64层CT后处理技术在关节骨折诊断中的价值

Value of 64-slice spiral CT postprocessing in the diagnosis of joint fracture

背景:多层螺旋CT结合图像后处理技术对骨折诊断的价值已得到肯定,其中安装有图像后处理软件,可用于各种骨关节外伤的诊断。目的:评价64层螺旋CT后处理技术在关节骨折中的应用价值。方法:对36例骨关节损伤患者全部进行X射线平片及多层螺旋CT扫描,并进行多平面重建及容积重建,分析平片、轴位、多平面重建及容积重建对骨折或脱位的显示情况。结果与结论:所有受试者中,X射线平片有明确骨折仅20例,容积重建图像可以立体显示骨折线的形态和走行,但容积重建图像对骨皮质轻微分离显示不佳、对关节腔内及椎管内游离骨折片显示困难。多平面重建可以准确显示骨折线以及骨折片的移位。3种方式对关节骨折诊断的阳性率比较有显著性差异。提示,64层螺旋CT后处理技术可以直观、立体、清晰、多角度地显示关节骨折;具有较高的临床应用价值。

BACKGROUND：Significance of multiple helical CT posterior reconstruction technique for fracture diagnosis has been confirmed. The posterior processing software can be used for diagnosis of various injuries out of joint. OBJECTIVE：To evaluate the value of reconstruction techniques posterior to 64-slice CT imaging in the diagnosis of joint fracture. METHODS：A total of 36 patients with joint fracture underwent plain X ray film and helical CT scanning. Osteoarticular injury was determined by X ray film,multi-planar reconstruction （MPR） and volumetric reconstruction （VR）,and the results of different methods were analyzed. RESULTS AND CONCLUSION：In all cases,20 showed fracture by plain X ray obviously with the modality and direction. All cases showed modality and direction excellently by VR reconstructed images,but the details of the slightly cortical abruption were not distinct. All cases had fracture by MPR technique and the segment shift of the fracture was fairly displayed. 64-slice CT postprocessing images can clearly display osteoarticular injury,and it is of high value in clinical practice.