定义放射抗拒和放射敏感是两个简明词汇,在不同地方使用,它们就具有不同含义。在历史上,如肿瘤经适当剂量射线照射后,效应明显,就认为其放射敏感,反之,经正常组织可耐受的最大剂量照射后,效应很小,或者根本无改变,就认为其放射抗拒。在两者之间,又把不同肿瘤的放射敏感性分成不同级别。这种概念,在大多数非放疗学家中十分流行。如Paterson’s 分类法,把肿瘤 Defining radiation resistance and radiation sensitivity are two concise terms that are used in different places and they have different meanings. Historically, tumors were considered radiosensitized if they had significant effects after irradiation with a suitable dose of radiation. Conversely, radiosensitivity was considered minimal or no change after exposure to the maximum dose tolerated by normal tissues. . Between the two, the radiosensitivity of different tumors is divided into different levels. This concept is very popular among most non-radiotherapy scientists. Such as Paterson’s classification, the tumor