The survival curves of heavy ions showe d as lines and one-target models, when survival fractions were 50% and 10%, the RBE of SMMC-7721,HeLa and B16 cells were 3.40? 2.76? 4 67 and 1.88?

• 细胞经重离子处理后表现为无肩区的存活曲线 ,属单靶击中模型 ,在细胞存活分数为 5 0%25和 10%25时得到SMMC 772 1、HeLa、B16细胞的RBE值分别为 3 40、2 76、4 6 7和 1 88、1 5 3、2 2 2。