X 线摄影对显示机体的正常结构及病理变化等提供了可靠的诊断依据。此项技术目前已进展到以电子计算机 X 线断层扫描摄影(CT)来诊断疾病,但由于其设备复杂,价格昂贵,一时尚难普及。而大量的、常用的,还是一般 X 线摄影。沿用的 X 光胶片,以醋酸纤维为基质,双面涂有感光乳剂,比感 X-ray photography shows the normal structure of the body and pathological changes provide a reliable basis for diagnosis. The technology has now progressed to computerized tomography (CT) to diagnose disease, but its popularity is difficult to popularize due to its complex and expensive equipment. The large number of commonly used, or general X-ray photography. X-ray film used to acetate fiber as a substrate, coated with a double emulsion, than the flu