Počet záznamů: 1
Dose distribution of secondary radiation in a water phantom for a proton pencil beam-EURADOS WG9 intercomparison exercise
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SYSNO ASEP 0489292 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Dose distribution of secondary radiation in a water phantom for a proton pencil beam-EURADOS WG9 intercomparison exercise Tvůrce(i) Stolarczyk, L. (PL)
Trinkl, S. (DE)
Romero-Exposito, M. (ES)
Mojzeszek, N. (PL)
Ambrožová, Iva (UJF-V) RID, ORCID, SAI
Domingo, C. (ES)
Davídková, Marie (UJF-V) RID, ORCID, SAI
Farah, J. (FR)
Klodowska, M. (PL)
Kneževic, Z. (HR)
Liszka, M. (PL)
Majer, M. (HR)
Miljanic, S. (HR)
Ploc, Ondřej (UJF-V) RID, ORCID, SAI
Schwarz, M. (IT)
Harrison, R. M. (GB)
Olko, P. (PL)Celkový počet autorů 17 Číslo článku 085017 Zdroj.dok. Physics in Medicine and Biology. - : Institute of Physics Publishing - ISSN 0031-9155
Roč. 63, č. 8 (2018)Poč.str. 13 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova passive detectors ; neutron dosimetry ; gamma radiation dosimetry ; water phantom measurements ; secondary radiation measurements ; pencil beam scanning proton radiotherapy Vědní obor RIV FP - Ostatní lékařské obory Obor OECD Radiology, nuclear medicine and medical imaging Institucionální podpora UJF-V - RVO:61389005 UT WOS 000430476400007 EID SCOPUS 85046457369 DOI 10.1088/1361-6560/aab469 Anotace Systematic 3D mapping of out-of-field doses induced by a therapeutic proton pencil scanning beam in a 300 x 300 x 600 mm(3) water phantom was performed using a set of thermoluminescence detectors (TLDs): MTS-7 ((LiF)-Li-7:Mg, Ti), MTS-6 ((LiF)-Li-6:Mg, Ti), MTS-N ((LiF)-Li-nat:Mg, Ti) and TLD-700 ((LiF)-Li-7: Mg, Ti), radiophotoluminescent (RPL) detectors GD-352M and GD-302M, and polyallyldiglycol carbonate (PADC)-based (C12H18O7) track-etched detectors. Neutron and gamma-ray doses, as well as linear energy transfer distributions, were experimentally determined at 200 points within the phantom. In parallel, the Geant4 Monte Carlo code was applied to calculate neutron and gamma radiation spectra at the position of each detector. For the cubic proton target volume of 100 x 100 x 100 mm(3) (spread out Bragg peak with a modulation of 100 mm) the scattered photon doses along the main axis of the phantom perpendicular to the primary beam were approximately 0.5 mGy Gy(-1) at a distance of 100 mm and 0.02 mGy Gy(-1) at 300 mm from the center of the target. For the neutrons, the corresponding values of dose equivalent were found to be similar to 0.7 and similar to 0.06 mSv Gy(-1), respectively. The measured neutron doses were comparable with the out-offield neutron doses from a similar experiment with 20 MV x-rays, whereas photon doses for the scanning proton beam were up to three orders of magnitude lower. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2019
Počet záznamů: 1