Transversal dose profile reconstruction for clinical proton beams: A detectors inter-comparison |
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| Institution: | 1. INFN-LNS, Istituto Nazionale di Fisica Nucleare – Laboratori Nazionali del Sud, Via S. Sofia, 62, 95123 Catania, Italy;2. Department of Physics and Astronomy, University of Catania, Via S. Sofia, 64, 95123 Catania, Italy;3. INFN-TIFPA, Trento Institute for Fundamental Physics and Applications, Via Sommarive, 14, 38123 Povo, Trento, Italy;4. Department of Physics, University of Trento, Via Sommarive, 14, 38123 Povo, Trento Italy;1. Department of Physical Sciences, Peter MacCallum Cancer Centre, Melbourne, Australia;2. RMIT University, Melbourne, Australia;3. Division of Radiation Oncology and Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Australia;1. Université catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), MIRO Lab, Brussels, Belgium;2. University of Florida Proton Therapy Institute, Jacksonville, FL, USA;3. Ion Beam Applications, Louvain-la-Neuve, Belgium;4. KU Leuven, Department of Oncology, Laboratory of Experimental Radiotherapy, Leuven, Belgium;1. German Cancer Research Center (DKFZ), Department of Medical Physics in Radiation Oncology, Heidelberg, Germany;2. Heidelberg Institute for Radiation Oncology (HIRO), National Center for Radiation Research in Oncology (NCRO), Heidelberg, Germany;3. Heidelberg University, Faculty of Physics and Astronomy, Heidelberg, Germany;4. Pontificia Universidad Católica de Chile, Institute of Physics, Santiago, Chile;5. Universidad de Chile, Center for Mathematical Modeling, Santiago, Chile;6. University of Groningen, Johann Bernoulli Institute, Groningen, The Netherlands;7. Instituto de Investigación Sanitaria de Santiago (IDIS), Group of Medical Physics and Biomathematics, Santiago de Compostela, Spain;1. Medical Physics Department, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Torino, Italy;2. Institute of Radiological Sciences, University of Sassari, Italy;3. Radiotherapy Department, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Torino, Italy;4. Radiotherapy, Centro Aktis, Marano di Napoli, Italy;5. U.O. Unità Fegato, A.O. Moscati, Avellino, Italy;6. Radiation Oncology Department, University Hospital, Verona, Italy;7. Radiotherapy Department, S. Camillo-Forlanini, Roma, Italy;8. Radiotherapy Department, Oncologic Businco Hospital, Cagliari, Italy;9. Hyperthermia Service, Centro Medico Serena, Padova, Italy;1. Clermont University, Blaise Pascal University, CNRS/IN2P3, Laboratoire de Physique Corpusculaire, BP 10448, Clermont-Ferrand F-63000, France;2. Centre Jean Perrin, Service de Physique Médicale, Clermont-Ferrand F-63000, France |
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| Abstract: | PurposeThe main purpose of this work is the inter-comparison between different devices devoted to the transversal dose profile recostruction for daily QA tests in proton therapy.MethodsThe results obtained with the EBT3 radiochromic films, used as a reference, and other common quality control devices, have been compared with those obtained with a beam profiling system developed at the “Laboratori Nazionali del Sud” of Italian Institute for Nuclear Physics (INFN-LNS, Catania, Italy). It consists of a plastic scintillator screen (thickness 1 mm), mounted perpendicularly to the beam axis and coupled with a highly sensitive CCD detector in a light-tight box.Results and conclusionThe tests, carried out both at the INFN-LNS and Trento Proton Therapy Center facilities, show, in general, a good agreement between the different detectors. The beam profiling system, in particular, appears to be a promising quality control device for 2-D relative dosimetry, because of its linear response in a dose rate range useful for proton therapy treatments, its high spatial resolution and its short acquisition and processing time. |
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| Keywords: | Relative dosimetry QA in radiotherapy Proton beam Plastic scintillator |
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