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Carbon beam dosimetry using VIP polymer gel and MRI

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, , Citation I Kantemiris et al 2009 J. Phys.: Conf. Ser. 164 012055 DOI 10.1088/1742-6596/164/1/012055

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1 Nuclear and Particle Physics Section, Physics Department, University of Athens, Panepistimioupoli, Ilissia, 157 71 Athens, Greece

2 Medical Physics Laboratory, Medical School, University of Athens, Greece

3 Department of Medical Physics in Radiation Oncology, German Cancer Research Center (DKFZ), Germany

4 Heidelberg University Hospital, Heidelberg, Germany

5 Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark

6 Medical Diagnostic Center "Ayios Therissos, Strovolos, Nicosia, Cyprus

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1742-6596/164/1/012055

Abstract

VIP polymer gel dosimeter was used for Carbon ion beam dosimetry using a 150 MeV/n beam with 10 Gy plateau dose and a SOBP irradiation scheme with 5 Gy Bragg peak dose. The results show a decrease by 8 mm in the expected from Monte Carlo simulation range in water, suggesting that the dosimeter is non water equivalent. However VIP shows efficiency close to 1 in the plateau region and significantly reduced efficiency in the peak. On the other hand the SOBP results yield an efficiency close to 1 in the SOBP implying that the dose response of the VIP dosimeter may not be solely related to LET.

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10.1088/1742-6596/164/1/012055