Introduction: Low dose rate brachytherapy sources have been used widely for interst-itial implants in tumor sites, particularly in prostate cancer. Recently, several new desi-gns of 125I and 103Pd sources have become commercially available for clinical appli-cations.
Materials & Methods: In this research, dosimetric characteristics of a new IrSeed 125I brachytherapy source has been deter-mined using LiF thermoluminescent(TLD) chips and EBT radiochromic film. Dose distributions around the IrSeed 125I source were measured in a Plexiglass phantom using TLD-100 LiF thermoluminescent dosimeters and EBT radiochromic film.
Findings: Quantities such as radial dose fu-nction, g(r) for distances 2,3 and 5 cm, and anisotropy function, F(r,θ), for angels 0-180º were experimentally determined and the geometry function, G(r,θ), was calcul-ated.
Discussion & Conclusion: The dose rate constant, Λ, was measured to be 0.965±0.06 cGyh-1U-1. The dosimetric par-ameters that have presented for this new source, may have many clinical appli-cations.
Lohrabian V, Sheibani S, Aghamiri M, Ghozati B, Pourbeigi H, havasian M. Determination of Dosimetric Parameters of New Brachytherapy Seed (125IrSeed) Using EBT Radiochomic Film and TL Dosimeters. J. Ilam Uni. Med. Sci. 2013; 21 (1) :78-88 URL: http://sjimu.medilam.ac.ir/article-1-1006-en.html