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在临床放射治疗中,受照射肿瘤的形状常不规则,绕身体纵轴各个方向上的投影大小亦不相同(图1)。原体照射是在旋转照射中,根据靶区在各个方向上的不同投影大小,不断地变换光阑的开度,使得光束边缘与靶区相符的照射技术。这种技术最早是由日本的梅垣洋一郎在1957年提出。其后高桥信次进行了进一步的研究与完善,命名为原体照射法(Conformation Radiotherapy),并
In clinical radiotherapy, the shape of the irradiated tumor is often irregular, and the projected size in all directions around the longitudinal axis of the body is also different (Figure 1). In the rotating irradiation, the original body illumination is a technique of continuously changing the opening of the diaphragm according to the different projection sizes of the target region in all directions so that the edge of the light beam matches the target region. This technique was first proposed by Japan’s Meiji Yuichiro in 1957. Takahashi Shinsaibashi thereafter conducted further research and improvement, named the original body irradiation method (Conformation Radiotherapy), and