【摘要】 本文应用国产 DZY-10医用电子直线加速器产生的8MeVX 线离体照射人外周血,经54小时培养后,观察淋巴细胞的染色体畸变,双着丝点体畸变率与剂量之间关系适宜配成 Y=（1.97±1.95）×10^-4D+（2.74±0.71）×10^-6D²。以180kVX 线诱发的双着丝点体的畸变率为标准,得到8MeVX 线、⁶⁰Coγ线和14MeV 中子的相对生物效应系数分别为0.59、0.63和2.03。更多还原

【Abstract】 In this paper,human blood has been irradiated in vitro with 8 MeV X-ray from a DZY-10 linear electron accelerator for medicinal use.After culturing for 54 hours the chromosome aberrations in the lymphocytes were observed,The dose-response curve for dicentric is fitted into a quadratic model Y=（1.97±1.95）×10^-4D+（2.74+0.71）×10^-6D².Taking dicentric yields induced by 180 kV X-ray as standard,RBE values for 8 MeV X-ray,⁶⁰Co γ-ray and 14 MeV neutron was obtained to be 0,59,0,63 and 2.03,respectively.更多还原