Basic Clinical Radiobiology 2017

Considering tumor effect, using α/β = 10 Gy,

= 24 4 + 10 2 + 10 ⎛ ⎝⎜ ⎞

⎠⎟ = 28

EQD 2

tumor

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