Advanced Physics for Brachytherapy 2018

Detection Volume

Y

X

• Detection volume if not perfectly cubic • Deviation from expected positions increase with distance (Z) and close to edges (X,Y plane) • ± 1 mm in the first 30 cm • ± 10 mm at 55 cm • Angle < 2% first 30 cm • +8 to -10% at 55 cm

Z

Boutaleb et al. J Contemp Brachytherapy 7 280–9