Thermoluminescent and Monte Carlo dosimetry of a new 170Tm brachytherapy source.
Identifieur interne : 000242 ( Main/Merge ); précédent : 000241; suivant : 000243Thermoluminescent and Monte Carlo dosimetry of a new 170Tm brachytherapy source.
Auteurs : Sona Nazari [Iran] ; Mahdi Sadeghi [Iran] ; Simindokht Shirvani-Arani [Iran] ; Ali Bahrami-Samani [Iran] ; Pooneh Saidi [Iran]Source :
- Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB) [ 1724-191X ] ; 2014.
Descripteurs français
- KwdFr :
- MESH :
- normes : Curiethérapie.
- usage thérapeutique : Radio-isotopes, Thulium.
- Curiethérapie, Dosimétrie en radiothérapie, Dosimétrie thermoluminescente, Fantômes en imagerie, Méthode de Monte-Carlo, Normes de référence.
English descriptors
- KwdEn :
- MESH :
- chemical , therapeutic use : Radioisotopes, Thulium.
- methods : Brachytherapy, Thermoluminescent Dosimetry.
- standards : Brachytherapy.
- Monte Carlo Method, Phantoms, Imaging, Radiotherapy Dosage, Reference Standards.
Abstract
In this Study characteristics of a new 170Tm brachytherapy seed using thermoluminescent dosimeter and also the Monte Carlo simulations to evaluate between calculated and measured values was determined. Titanium tube contained Tm(NO3)3 powders bombardment at the Tehran Research Reactor (TRR) for a period of 7 days at a flux of 2-3 × 10(13) neutrons/cm2 s. To obtain the radial dose function, g(r), and the anisotropy function, F(r, θ), according to the AAPM TG-43U1 recommendations, 30 cm × 30 cm × 15 cm phantoms of Perspex slabs were used. Brachytherapy dose distributions were simulated with the MCNP5 Monte Carlo (MC) radiation transport code. The MCPLIB04 photon cross-section library was applied using data from ENDF/B-VI. Cell-heating tally, F6 was employed to calculate absorbed dose in two separate runs for both beta and gamma particles. The calculated dose rate constant for the HDR source was found to be 1.113 ± 0.021 cGyU(-1) h(-1). Nominal uncertainty in the measured and calculated radial dose functions, g(r), for the IR-(170)Tm source in Perspex is tabulated is approximately 6% (ranging from 2% to 9%). The anisotropy function, F(r, θ), of the IR-(170)Tm source was measured at radial distances of r = 1.5, 2, 3, 5 cm relative to the seed center, and polar angles θ ranging from 0° to 330° in 30° increments.
DOI: 10.1016/j.ejmp.2013.05.003
PubMed: 23764298
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Box 31485-498, Gohardasht, 1439951113 Karaj, Iran. Electronic address: msadeghi@nrcam.org.</nlm:affiliation><country xml:lang="fr">Iran</country><wicri:regionArea>Agricultural, Medical and Industrial Research School, Nuclear Science and Technology Research Institute, P.O. Box 31485-498, Gohardasht, 1439951113 Karaj</wicri:regionArea><wicri:noRegion>1439951113 Karaj</wicri:noRegion></affiliation></author><author><name sortKey="Shirvani Arani, Simindokht" sort="Shirvani Arani, Simindokht" uniqKey="Shirvani Arani S" first="Simindokht" last="Shirvani-Arani">Simindokht Shirvani-Arani</name><affiliation wicri:level="1"><nlm:affiliation>Radiopharmaceutical Research and Development Lab (RRDL), Nuclear Science and Technology Research Institute (NSTRI), Tehran, P.O. Box 14155-1339, Iran.</nlm:affiliation><country xml:lang="fr">Iran</country><wicri:regionArea>Radiopharmaceutical Research and Development Lab (RRDL), Nuclear Science and Technology Research Institute (NSTRI), Tehran, P.O. Box 14155-1339</wicri:regionArea><wicri:noRegion>P.O. Box 14155-1339</wicri:noRegion></affiliation></author><author><name sortKey="Bahrami Samani, Ali" sort="Bahrami Samani, Ali" uniqKey="Bahrami Samani A" first="Ali" last="Bahrami-Samani">Ali Bahrami-Samani</name><affiliation wicri:level="1"><nlm:affiliation>Radiopharmaceutical Research and Development Lab (RRDL), Nuclear Science and Technology Research Institute (NSTRI), Tehran, P.O. Box 14155-1339, Iran.</nlm:affiliation><country xml:lang="fr">Iran</country><wicri:regionArea>Radiopharmaceutical Research and Development Lab (RRDL), Nuclear Science and Technology Research Institute (NSTRI), Tehran, P.O. Box 14155-1339</wicri:regionArea><wicri:noRegion>P.O. Box 14155-1339</wicri:noRegion></affiliation></author><author><name sortKey="Saidi, Pooneh" sort="Saidi, Pooneh" uniqKey="Saidi P" first="Pooneh" last="Saidi">Pooneh Saidi</name><affiliation wicri:level="1"><nlm:affiliation>Department of Nuclear Engineering, Science and Research Branch, Islamic Azad University, 1477893855 Tehran, Iran.</nlm:affiliation><country xml:lang="fr">Iran</country><wicri:regionArea>Department of Nuclear Engineering, Science and Research Branch, Islamic Azad University, 1477893855 Tehran</wicri:regionArea><wicri:noRegion>1477893855 Tehran</wicri:noRegion></affiliation></author></analytic><series><title level="j">Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB)</title><idno type="eISSN">1724-191X</idno><imprint><date when="2014" type="published">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Brachytherapy (methods)</term><term>Brachytherapy (standards)</term><term>Monte Carlo Method</term><term>Phantoms, Imaging</term><term>Radioisotopes (therapeutic use)</term><term>Radiotherapy Dosage</term><term>Reference Standards</term><term>Thermoluminescent Dosimetry (methods)</term><term>Thulium (therapeutic use)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Curiethérapie ()</term><term>Curiethérapie (normes)</term><term>Dosimétrie en radiothérapie</term><term>Dosimétrie thermoluminescente ()</term><term>Fantômes en imagerie</term><term>Méthode de Monte-Carlo</term><term>Normes de référence</term><term>Radio-isotopes (usage thérapeutique)</term><term>Thulium (usage thérapeutique)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="therapeutic use" xml:lang="en"><term>Radioisotopes</term><term>Thulium</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Brachytherapy</term><term>Thermoluminescent Dosimetry</term></keywords><keywords scheme="MESH" qualifier="normes" xml:lang="fr"><term>Curiethérapie</term></keywords><keywords scheme="MESH" qualifier="standards" xml:lang="en"><term>Brachytherapy</term></keywords><keywords scheme="MESH" qualifier="usage thérapeutique" xml:lang="fr"><term>Radio-isotopes</term><term>Thulium</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Monte Carlo Method</term><term>Phantoms, Imaging</term><term>Radiotherapy Dosage</term><term>Reference Standards</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Curiethérapie</term><term>Dosimétrie en radiothérapie</term><term>Dosimétrie thermoluminescente</term><term>Fantômes en imagerie</term><term>Méthode de Monte-Carlo</term><term>Normes de référence</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In this Study characteristics of a new 170Tm brachytherapy seed using thermoluminescent dosimeter and also the Monte Carlo simulations to evaluate between calculated and measured values was determined. Titanium tube contained Tm(NO3)3 powders bombardment at the Tehran Research Reactor (TRR) for a period of 7 days at a flux of 2-3 × 10(13) neutrons/cm2 s. To obtain the radial dose function, g(r), and the anisotropy function, F(r, θ), according to the AAPM TG-43U1 recommendations, 30 cm × 30 cm × 15 cm phantoms of Perspex slabs were used. Brachytherapy dose distributions were simulated with the MCNP5 Monte Carlo (MC) radiation transport code. The MCPLIB04 photon cross-section library was applied using data from ENDF/B-VI. Cell-heating tally, F6 was employed to calculate absorbed dose in two separate runs for both beta and gamma particles. The calculated dose rate constant for the HDR source was found to be 1.113 ± 0.021 cGyU(-1) h(-1). Nominal uncertainty in the measured and calculated radial dose functions, g(r), for the IR-(170)Tm source in Perspex is tabulated is approximately 6% (ranging from 2% to 9%). The anisotropy function, F(r, θ), of the IR-(170)Tm source was measured at radial distances of r = 1.5, 2, 3, 5 cm relative to the seed center, and polar angles θ ranging from 0° to 330° in 30° increments.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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