腰椎侧位投照球管倾角的简易定位法邓耀康①陈英浩②判断腰椎（Ｌ）片标准的主要依据为：椎间隙的显示，而椎缘的“双边征”则影响椎间隙的观察，为此，我们摸索了一种适用于成年人投照的简易定位法，特予介绍。１方法和步骤１．１在Ｌ侧位投照，中心线与其矢状轴相垂直，... Lumbar vertebral lateral projection ball dip tube easy positioning method Deng Yaokang ① Chen Yinghao ② determine the main basis for the standard lumbar (L) film: the intervertebral space, while the “bilateral levator ani” affect the intervertebral space observed as In this regard, we explored a simple positioning method suitable for adults to vote, especially for introduction. 1 Methods and Procedures 1.1 Projection in the L side, the center line perpendicular to the sagittal axis, ...