Dosimetry characteristics of the Plus and 12i Gammamed PDR 192Ir sources

In this study a complete set of dosimetric data for the Plus and 12i Gammamed PDR (pulsed dose rate) Ir-192 sources is presented. These data have been calculated using the Monte Carlo simulation code GEANT3. Absolute dose rate distributions in water around these sources were calculated and are presented in form of conventional two dimensional (2D) Cartesian look-up tables. All dosimetric quantities recommended by the AAPM Task Group 43 report have been also calculated. These quantities are dose rate constant, radial dose function, anisotropy function and anisotropy factor. The dose rate distribution of the 12i source was compared with the corresponding data for the microselectron PDR source showing large differences between both sources. (C) 2001 American Association of Physicists in Medicine.