Intercomparative studies of brachytherapy techniques combined with 252Cf boron neutron capture therapy

In this work the depth dose distribution for gamma-rays, slow and fast neutrons, nuclear recoils and alpha-particles inside a tumor phantom filled with 100 ppm B-10 in distilled water was measured. The depth dose distributions were measured and represented on three-dimensional plots when a Cf-252 neutron source was situated in interstitial, surface and intracavitary brachytherapy techniques. Comparison of the three brachytherapy techniques when combined with BNCT revealed that the damage induced in the tumor by the alpha-particles as nuclear recoils in the interstitial geometry is much more than the other two techniques.