Research Masterclass in Radiotherapy Physics 2017

Why is brachytherapy hot?

 High, intermediate, low doses within mm  Dose gradients  ~5-30% pr mm at the target edge (e.g. 6% at point A)  Hypofractionation

Equivalent dose EQD2 (Gy)

Relative physical dose

0,00 0,25 0,50 0,75 1,00 1,25 1,50 1,75 2,00

140

120

100

80

60

40

20

0

-8

-3

2

7

-8

-3

2

7

Distance (cm)

Distance (cm)

2