放疗前应用模拟机对肿瘤透视定位十分重要1975年我院引进日本岛津RH5型模拟机已为各种胸部及腹盆部等恶性肿瘤透视定位拍片共1361张,将实践工作中体会总结如下: (一)应用模拟机透视定位拍片的体会 (1)机器使用必须配备有操作熟练的医师与技术员各一名,医师在定位前应充分了解病史及近期X光片,拍片前应仔细透视检查拟设射野大小是 Before the radiotherapy, the simulator was very important for the fluoroscopy positioning of tumors. In 1975, our hospital introduced the Shimadzu RH5 simulator in Japan for a total of 1361 radiography orientations of various malignant tumors such as the chest and abdomen basin. The experience in practice is summarized as follows: (1) The experience of using a simulator for perspective positioning (1) The machine must be equipped with one skilled doctor and technician. The physician should fully understand the medical history and recent X-ray film before positioning. Before the film is taken, it should be examined carefully. Set the size of the field