Author/Authors :
lohrabian, v. ilam university of medical sciences, ايران , sheibani, s. nuclear science research school, nuclear science and technology research institute, ايران , aghamiri, m.r. shahid beheshti university of medical sciences, تهران, ايران , ghozati, b. shahid beheshti university of medical sciences, تهران, ايران , pourbeigi, h. nuclear science research school, nuclear science and technology research institute, ايران , baghani, h.r. shahid beheshti university of medical sciences, تهران, ايران
Abstract :
Introduction: Low dose rate brachytherapy sources have been widely used for interstitial implants in tumor sites, particularly in prostate. Dosimetric characteristics of a new IrSeed 125I brachytherapy source have been determined using the LiF thermoluminescent dosimeter (TLD) chips. Materials and Methods: Dose rate constant, radial dose function, and anisotropy function around the IrSeed 125I source were measured in a plexiglass phantom using TLD-100 chips. A plexiglass slab phantom with dimensions of 30×30×7.3 cm3 was used to measure dose distribution around the source. Results: Dose rate constant was measured to be equal to 0.965±0.006 cGyh-1U-1. Radial dose function, anisotropy function, and geometry function have been presented as tabulated data for the IrSeed source. Conclusion: Basically, the dosimetric parameters presented here for this new IrSeed source have clinical and treatment planning applications.
Keywords :
125I , Brachytherapy , Dosimetry , TG , 43 , TLD
