Dosimetric parameters of the new design 103Pd brachytherapy source based on Monte Carlo study |
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| Authors: | Pooneh Saidi Mahdi Sadeghi Alireza Shirazi Claudio Tenreiro |
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| Affiliation: | 1. Bowling Green State University, Bowling Green, OH, 43402, USA;2. Dipartimento di Scienze della Terra, Università di Pisa, Via S. Maria, 53, 56126 Pisa, Italy;3. Istituto di Geoscienze e Georisorse, CNR, Via Moruzzi 1, I-56124 Pisa, Italy;4. Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Pisa, via della Faggiola 32, 56126 Pisa, Italy;5. Istituto di Geoscienze e Georisorse, CNR, Via Ferrata 1, 27100 Pavia, Italy;6. GNS Science, 1 Fairway Ave, Lower Hutt, New Zealand;1. Department of Physics and Applied Physics, Medical Physics Program, University of Massachusetts Lowell, Lowell, MA, USA;2. Department of Radiation Oncology, Brigham and Women''s Hospital, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA, USA |
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| Abstract: | In this study version 5 of the MCNP photon transport simulation was used to calculate the dosimetric parameters for new palladium brachytherapy source design following AAPM Task Group No. 43U1 report. The internal source components include four resin beads of 0.6 mm diameters with 103Pd uniformly absorbed inside and one cylindrical copper marker with 1.5 mm length. The resin beads and marker are then encapsulated within 0.8 mm in diameter and 4.5 mm long cylindrical capsule of titanium. The dose rate constant, Λ, line and point-source radial dose function, gL(r) and gP(r), and the anisotropy function, F(r,θ) of the IR01-103Pd seed have been calculated at distances from 0.25 to 5 cm. All the results are in good agreement with previously published thermoluminescence-dosimeter measured values [3] for the source. The dosimetric parameters calculated in this work showed that in dosimetry point of view, the IR01-103Pd seed is suitable for use in brachytherapy of prostate cancer. |
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