Development of methods for brachytherapy dosimetryAim of the studyThe aim is to develop a suitable method (dosimeter and measurement phantom) for the verification of dose distributions in gynegolocical treatments by 192Ir and opthalmic treatments by 125I. The project is a part of the European Metrology Research Programme (EMRP) (”Increasing cancer treatment efficacy using 3D brachytherapy”), aiming at developing metrology and dosimetry for brachytherapy techniques. ImplementationSmall scintillation dosimeters and radiochromic, Gafcromic, film will be applied for the measurements, the 125I ophthalmic applicators, and also for the semiconductor detectors. As a first step, the energy and dose response of the selected deterctors will be determined for the energy region and the dose rates (up to 20 Gy/min) of interest in the applications. As a second step, the 2D and 3D dose distributions of 191Ir and 125I sources in a phantom for gynaecologic radiotherapy will be determined. The experimental measurements will be compared with the Monte Carlo simulations for the selected cases. Dissemination and exploitation of the resultsThe results will be published in project reports and in international journals (1-2 publications). The results will also be presented at international meetings associated with the project and in other international conferences of the field. The project will provide a method for the verification of dose distributions in gynaecologic and ophthalmic treatments and information on the accuracy and reliability of the methods of measurement for the use of the regulatory control of brachytherapy. CollaboratorsPhysikalisch-Technische Bundesanstalt, PTB, Germany; National Physical Laboratory, NPL, UK; Ente per le Nuove tecnologie, l'Energia e l'Ambiente, INMRI-ENEA, Italy (coordinator); Laboratoire National Henry Becqurel, LNE-LNHB, France; Bundesamtfur Eich-und Vermessungswesen, BEV, Austria; Swedish Radiation Protection Authority, SSI, Sweden; Instituto Tecnológico e Nuclear, LMRI-ITN, Portugal and Czech Metrology Institute - Inspectorate for Ionising Radiation, CMI, Czech Republic. Timetable2008–2011 Responsible scientistHannu Järvinen Page updated 15/05/2009
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