Radiobiology 2016

1 /n

d

16.5 1.0

10.95

.5

7.35 4.88 3.14 1.90 1.08

.25

1 /n

.125

α/β

.0625

.03125 .015625

d

Damage from a single fraction = αd + βd 2 Total damage from n fractions, E = n ( αd + βd 2 ) E/n = αd + βd 2 1 /n = ( α/E)d + ( β/E)d 2