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Tridimensional dosimetry for prostate IMRT treatments using MAGIC-f gel by MRI
Institution:1. Institut Català de Paleontologia Miquel Crusafont, Universitat Autònoma de Barcelona, Edifici ICTA-ICP, Carrer de les Columnes s/n, Campus de La UAB, 08193 Cerdanyola del Vallès, Barcelona, Spain;2. Department of Anthropology, Lehman College of the City University of New York, 250 Bedford Park Boulevard West, Bronx, NY 10468, USA;3. Department of Vertebrate Paleontology, American Museum of Natural History, 200 Central Park West, New York, NY 10024, USA;4. PhD Program in Anthropology, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, NY 10016, USA;5. New York Consortium in Evolutionary Primatology, New York, NY, USA;6. Departamento de Paleobiología, Museo Nacional de Ciencias Naturales (CSIC), José Gutiérrez Abascal 2, 28006 Madrid, Spain;7. Departament de Botànica i Geologia, Universitat de València, Doctor Moliner 50, 46100 Burjassot, Spain;8. Dirección General de Bienes Culturales de la CARM, Casa Díaz Cassou, C/ Santa Teresa 21, 30071 Murcia, Spain;9. Grupo de Investigación de Geología, Facultad de Química, Universidad de Murcia, 30100 Murcia, Spain;1. Medical Radiation Sciences, Department of Immunology, Genetics and Pathology, Uppsala University, Sweden;2. Experimental and Clinical Oncology, Department of Immunology, Genetics and Pathology, Uppsala University, Sweden;3. Uppsala University Hospital, Sweden;1. Department of Radiology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106 Freiburg, Germany;2. Department of Urology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106 Freiburg, Germany;1. Service de médecine nucléaire, centre Henri-Becquerel, 1, rue d’Amiens, 76000 Rouen, France;2. Litis (EA 4108), université de Rouen Normandie, 685, avenue de l’Université, 76800 Saint-Étienne-du-Rouvray, France
Abstract:Intensity-modulated radiation therapy is able to deliver complex dose distributions and a system able to determine tridimensional dose distribution during the quality assurance of the treatments would be of great interest. In this context polymeric gels can be a useful dosimeter. This work aims to apply this tridimensional dosimetry technique for two prostate IMRT treatments, using MAGIC-f as a gel dosimeter combined with the magnetic resonance imaging to determinate the dose distributions. Dose images obtained by the gel were compared with the treatment planning images and the gamma index was calculated as a quantitative comparison. In both plans a high pass rate was achieved in the gamma analyses (95.5% and 94.0% for plans 1 and 2 respectively) showing that they were approved in the tridimensional quality assurance.
Keywords:Polymer gel  MAGIC-f  IMRT  Tridimensional dosimetry
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