Cervix BT - 2016

Mathematical Description / Repair Function  External beam radiotherapy and HDR brachytherapy : no repair during irradiation (min) repair function g = 1  LDR, MDR brachytherapy : repair during irradiation (hours - days) is significant 2 T 1/2 4 6 8 Time [h] . . .

21 T 2ln =µ

  

   −

− = − t e t µ µ 1 12

(

)

MDR LDR g ,

t µ

T 1/2

µ … repair rate T 1/2 t … irradiation time

… half time for repair

2

4

6

8 Time [h]

BT-GYN Teaching Course

D. Berger