论文部分内容阅读
临床医生在球内异物定位片上测量时,常感困惑的是侧位和垂直位片上的定位环不呈一直线及正位片和垂直位片各自比例的不准确而影响异物位置的诊断。我们根据临床工作观察,分析了上述情况形成原因,就拍摄方法做了一些改进,在此作一介绍。1.侧位和垂直位片上的定位环不呈一直线。主要原因是摄片时眼球位置转动,侧位片时眼球发生左右方向转位,垂直位时上下方向转位,引起定位环(位角巩膜缘)与台面不垂直所致。在摄片时常用的方法是嘱病人
Clinicians in the ball when measuring foreign body positioning piece, often feel puzzled is the lateral and vertical position of the positioning ring is not a straight line and the positive and vertical slices of the proportion of inaccurate and affect the location of foreign body diagnosis. According to the clinical observation, we analyzed the reasons for the above-mentioned circumstances and made some improvements on the shooting methods, making an introduction here. 1. The lateral and vertical position of the positioning ring is not a straight line. The main reason is the rotation of the eye when the film is being taken. The lateral shift of the eye occurs in the lateral view. The vertical position translocates in the up and down direction, causing the positioning ring (the scleral limbus) not to be perpendicular to the table. The method commonly used in radiography is to instruct the patient