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国产200毫安固定阳极X线诊断机是比较早期的产品、荧光屏上设有沪线栅装置,即使经过充分的暗适应,影像的清晰度仍然不佳.特别拍摄胃小区时影像显示不清.其原因主要是容量小,特别是固定阳极,效应低,对人体穿透力差,管球窗射击的X线不集中,无滤线栅,散乱射线多,不能阻止二次射线,造成失真.为了获得胶片良好影像,我们对北京产F30~200MA型X射线机及其附属设备进行了部分改动.用以进行消化道造影检查.1.首先在管球窗口前加上一个方形钱币形铅窗.使射击的X线未得以集中,以增加胶片的清晰度.
The 200mA fixed-anode X-ray diagnostic machine made in China is an earlier product with an upper wire grid device on the screen, so the sharpness of the image is still poor even after sufficient dark adaptation. The main reason is the small capacity, especially the fixed anode, the effect is low, poor penetration of the human body, tube window shot X-ray is not concentrated, no grid, scattered rays and more, can not stop the second ray, resulting in distortion. In order to obtain a good image of the film, we made some changes to the Beijing-made F30 ~ 200MA X-ray machine and its ancillary equipment for the purpose of digestive tract imaging.1 First, add a square coin-shaped lead-window Make the X - rays of the shot unassigned to increase the clarity of the film.