Advanced Brachytherapy Physics - Vienna 2016

Modern Radiation Therapy

BRT versus ERT Similarities and Differences

Dosimetric Kernel

BRT

BRT

1/r 2 = 0.007  0.7%

0 2 4 6 8 10 12 14 16 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Ir-192 Yb-169 100 keV 80 keV 60 keV 50 keV 40 keV 30 keV 20 keV

0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0

20 keV 25 keV 30 keV 40 keV 50 keV 60 keV 70 keV 80 keV 90 keV

100 keV 150 keV 200 keV 300 keV 400 keV 667 keV

Radial Dose Fucntion g(r)

Dose Rate Normalized to 1.0 cm

0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0

Radial Distance (cm)

Radial Distance (cm)