【摘要】 目的探讨腰椎副突在MSCT横断面上的形态特征,提高对腰椎副突的认识。方法利用多层螺旋CT进行薄层扫描,观察40例成人副突,对其进行形态学分型,测量其基底宽、高度、基底—横突末端距(基端距)及倾斜角;并分析其分布特点。结果腰椎副突可分5型,Ⅰ型(乳头状)占20.5%(82/400), Ⅱ型(长舌状)占24.8%(99/400), Ⅲ型(锥状)占12.3%(49/400),Ⅳ型(残痕状)占15.0%(60/400),Ⅴ型(无副突结构)占27.5%(110/400)。Ⅴ型80%位于L4和L5(88/110,);各型副突及其指标在性别间均无显著差异。结论腰椎副突可以在MSCT横断面上清晰显示,且形态多样;正确认识副突形态,为在活体上进行腰神经后内侧支骨纤维管的影像学研究打下了基础。更多还原

【Abstract】 Objective: To investigate the morphological characteristics of lumbar accessory process on MSCT transaction and to improve the understanding of lumbar accessory process.Methods: Four hundred adult patients’ lumbar accessory processes were observed under High Resolution Scan,and classified by morphology,their basal width,height,base-ending amplitudes and angle of bank were measured;and the distributing characteristics were analyzed.Results: Lumbar accessory process could be divided into 5 types: TypeⅠ(papillae type) accounted for 20.5%(82/400);Type Ⅱ(ligulate type) 24.8%(99/400);Type Ⅲ(pyramidale type) 12.3%(49/400);Type Ⅳ(incomplete type) 15.0%(60/400);and Type Ⅴ(non-accessory process type) 27.5%(110/400).Eighty percent(88/110) of Type Ⅴ was located in L4 and L5,all types of accessory processes and their index didn’t show significant difference in gender.Conclusion: Lumbar accessory processes can be clearly displayed by MSCT transaction,and multi-morphologic,which forms the basis of the research on bony-fibral canal lumbar nevers post-medial branch in living body to recognize the morphology of accessory processes correctly.更多还原