Statiscal differences and systematic effect on measurement procedure in thermoluminescent dosimetry of the iodine-125 brachytherapy seed

ZEITUNI, CARLOS A.MOURA, EDUARDO S.ROSTELATO, MARIA E.C.M.MANZOLI, JOSE E.MOURA, JOAO A.FEHER, ANSELMOKARAM, DIB2014-11-172014-11-182015-04-022014-11-172014-11-182015-04-02ZEITUNI, CARLOS A.; MOURA, EDUARDO S.; ROSTELATO, MARIA E.C.M.; MANZOLI, JOSE E.; MOURA, JOAO A.; FEHER, ANSELMO; KARAM, DIB. Statiscal differences and systematic effect on measurement procedure in thermoluminescent dosimetry of the iodine-125 brachytherapy seed. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 9th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 16th; MEETING ON NUCLEAR INDUSTRY, 1st, September 27 - October 2, 2009, Rio de Janeiro, RJ. <b>Proceedings...</b> Disponível em: http://repositorio.ipen.br/handle/123456789/12262.http://repositorio.ipen.br/handle/123456789/12262In order to provide the dosimetry for Iodine-125 seed production in Brazil, Harshaw thermoluminescent dosimeters (TLD-100) will be used. Even if measurements with TLD-100 of the same batch of fabrication are performed, the response will not be the same. As a consequence, they must be measured one by one. These dosimeters are LiF type with a micro-cube (1mm x 1mm x 1mm) shape. Irradiations were performed using Iodine-125 seeds to guarantee the same absorbed dose of 5 Gy in each dosimeter. It has been used a Solid Water Phantom with three concentrically circle with 20mm, 50mm and 70mm diameters. The angle of positions used was 0º, 30º, 60º and 90º. Of course there are 2 positions in 0º and 90º and 4 positions in 30º and 60º. These complete procedures were carried out five times in order to compare the data and minimize the systematic error. The iodine-125 seed used in the experiment was take off in each measure and put again turning his position 180º to guarantee the systematic error was minimized. This paper presents also a little discussion about the statistical difference in the measurement and the calculation procedure to determine the systematic error in these measurements.openAccessbrachytherapyexperimental dataiodine 125lithium fluoridesphantomsradiation dosesradiation source implantsthermoluminescent dosemetersthermoluminescent dosimetryStatiscal differences and systematic effect on measurement procedure in thermoluminescent dosimetry of the iodine-125 brachytherapy seedTexto completo de eventohttps://orcid.org/0000-0002-5054-0799https://orcid.org/0000-0003-2943-6097https://orcid.org/0000-0002-7303-6720