通过对可移植小鼠前胃鳞癌(GS—742)的不同照射方式,看出多分割照射能够用较小的 ret取得与常规照射较高 ret 相同之肿瘤抑制率,而溃疡发生率及死亡率较低。对其原理作了初步探讨。从本实验看对中等敏感性的上皮癌,包括食管癌的放疗可以考虑试用多分割照射方式。 Through the different irradiation methods of transplantable mouse progastric squamous cell carcinoma (GS-742), we can see that multi-fractionated irradiation can achieve the same tumor inhibition rate as conventional irradiation with a higher ret, and ulcer incidence and death. The rate is lower. A preliminary discussion was made on its principle. From this experiment, we can consider the use of multi-fractional irradiation for moderately sensitive epithelial cancers, including esophageal cancer.