Al2O3:C optically stimulated luminescence droplets: Characterization and applications in medical beams |
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| Institution: | 1. Gent University, Radiotherapy Department, De Pintelaan, 185, 9000 Gent, Belgium;2. UZ Brussel, Radiotherapie, Groep Medische Fysica, VUB, Faculteit Geneeskunde en Farmacie, Laarbeeklaan 101, 1090 Brussels, Belgium;3. SCK•CEN Belgian Nuclear Research Centre, Radiation Protection Dosimetry and Calibration Group, Boeretang 200, Mol, Belgium;4. Physics Department, Universidade Estadual de Campinas, UNICAMP, Campinas, Brazil;5. GZA Ziekenhuizen, Sint Augustinus - Iridium Kankernetwerk Antwerpen and VUB, Faculteit Geneeskunde en Farmacie, Brussels, Belgium;1. Universitat Politècnica de Catalunya, Diagonal 647, 08028 Barcelona, Spain;2. Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany;3. Seibersdorf Labor GmbH, 2444 Seibersdorf, Austria;4. Helmholtz Zentrum München, Otto-Hahn-Ring 6, 81739 Munich, Germany;5. Ruder Boškovic Institute, Bijenicka 54, 10000 Zagreb, Croatia;6. CIEMAT, Avenida Complutense 40, 28040 Madrid, Spain;1. INFN Laboratori Nazionali del Sud, Catania, Italy;2. INFN Sezione di Bari, Italy;3. Università di Catania, Italy;1. College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China;2. Beijing Radiation Center, Beijing 100875, China |
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| Abstract: | Optically stimulated luminescence (OSL) detectors, which are widely used in radiation protection, offer a number of potential advantages for radiotherapy dosimetry. In this study we characterized 1-μl of OSL droplets consisting of a mixture of Al2O3:C powder and a photo-curable polymer, in addition to results described in a previous work (Nascimento et al., 2013). The concentration test showed that droplets have a higher spatial resolution than other commonly used Al2O3:C-based detectors. Our results from the dose response, reproducibility and dependence with accumulative dose were obtained for droplets with a powder/polymer concentration that showed a high Signal to Noise Ratio (SNR) without compromising the droplet malleability. Additional test results show the response of such droplets in percentage depth dose curves and dose profiles of clinical beams. |
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| Keywords: | Optically stimulated luminescence Radiotherapy Droplets |
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