放射线自被发现后即迅速用于临床治疗癌瘤,随后不久就观察到放射线的致癌作用。近八十年来,人类通过生产斗争和科学实验,不断掌握了放射线的知识并应用于众多领域。人们通过长期实践提高了对放射线治疗恶性肿瘤与致癌作用的认识。由于放射物理学的发展、新的高质量放射治疗源的涌现、剂量测量和照射技术的进步、放射生物学的深入研究以及放射治疗临床经验的积累,使放射线迅速普及成为治疗恶性肿瘤的最重要手段之一。目前,放射是某些肿瘤的主要根治治疗手段、是大部晚期肿瘤的姑息治疗方法。约有 Radiation was quickly used for clinical treatment of cancer after it was discovered, and the carcinogenic effect of radiation was observed shortly thereafter. In the past 80 years, mankind has continuously mastered radiation knowledge and applied it in many fields through production struggles and scientific experiments. Through long-term practice, people have improved their understanding of the role of radiation in treating malignant tumors and carcinogenesis. Due to the development of radiation physics, the emergence of new high-quality radiotherapy sources, advances in dose measurement and irradiation techniques, in-depth studies of radiobiology, and the accumulation of clinical experience in radiotherapy, the rapid spread of radiation has become the most important treatment of malignant tumors. One of the means. At present, radiation is the main radical treatment for certain tumors and is the palliative treatment for most advanced tumors. About