Radiobiology 2016

EQD 2 $ % & = 28 Considering tumor effect, using α/β = 10 Gy, tumor = 24 4 + 10 2 + 10 ! " #

Therefore, giving the rest of the treatment as

would give equal tumor effect as 35 × 2 Gy. 70 – 28 = 42 Gy in 2 Gy fractions