2017
DOI: 10.1088/1361-6560/aa5089
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On the development of a VIPARndradiotherapy 3D polymer gel dosimeter

Abstract: This work presents an improvement of the VIPAR ('nd' stands for 'normoxic, double', or VIP) polymer gel dosimeter. The gel composition was altered by increasing the concentration of the monomeric components, N-vinylpyrrolidone (NVP) and N,N'-methylenebisacrylamide (MBA), in co-solvent solutions. The optimal composition (VIPAR, where 'CT' stands for computed tomography, or VIC) comprised: 17% NVP, 8% MBA, 12% t-BuOH, 7.5% gelatine, 0.007% ascorbic acid, 0.0008% CuSO ×  5HO and 0.02% hydroquinone. The following … Show more

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Cited by 53 publications
(45 citation statements)
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“…There were two polymer gel dosimeters used in this study: VIPAR CT (VIC) [21] and VIC-T [25]. 4 •5H 2 O and 0.02% hydroquinone.…”
Section: Preparation Of Polymer Gel Dosimetersmentioning
confidence: 99%
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“…There were two polymer gel dosimeters used in this study: VIPAR CT (VIC) [21] and VIC-T [25]. 4 •5H 2 O and 0.02% hydroquinone.…”
Section: Preparation Of Polymer Gel Dosimetersmentioning
confidence: 99%
“…4 •5H 2 O and 0.02% hydroquinone. Its preparation procedure and other features including water equivalence are described in detail elsewhere [21]. VIC-T polymer gel dosimeter contained 14 mM tetrakis(hydroxymethyl)phosphonium chloride (THPC) as oxygen scavenger instead of L-ascorbic acid and CuSO 4 •5H 2 O used in VIC, and a reduced gelatine concentration (5%) with respect to that in VIC.…”
Section: Preparation Of Polymer Gel Dosimetersmentioning
confidence: 99%
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“…A dosimetria gel tem tomado grande destaque, uma vez que é possível obter informações dosimétricas de fontes de irradiação, de maneira tridimensional, com alta resolução espacial e alta sensibilidade, apresentando-se muito promissoras (CEBERG, ADLIENE, MATTSSON, 2017;KOZICKI et al, 2017;WATANABE, WARMINGTON, GOPISHANKAR, 2017;ROED, PINSKY, IBBOTT, 2018). Esses dosímetros têm sido estudados desde 1950 para uso em dosimetria em radioterapia (DAY, STEIN, 1950).…”
Section: Capítulo 1: Introduçãounclassified