Artículo
Water-equivalence of gel dosimeters for radiology medical imaging
Valente, Mauro Andres
; Vedelago, José Alberto
; Chacón Obando, David; Mattea, Facundo
; Velásquez, José; Pérez, Pedro Antonio
Fecha de publicación:
11/2018
Editorial:
Pergamon-Elsevier Science Ltd
Revista:
Applied Radiation and Isotopes
ISSN:
0969-8043
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
International dosimetry protocols are based on determinations of absorbed dose to water. Ideally, the phantom material should be water equivalent; that is, it should have the same absorption and scatter properties as water. This study presents theoretical, experimental and Monte Carlo modeling of water-equivalence of Fricke and polymer (NIPAM, PAGAT and itaconic acid ITABIS) gel dosimeters. Mass and electronic densities along with effective atomic number were calculated by means of theoretical approaches. Samples were scanned by standard computed tomography. Photon mass attenuation coefficients and electron stopping powers were examined. Theoretical, Monte Carlo and experimental results confirmed good water-equivalence for all gel dosimeters. Overall variations with respect to water in the low energy radiology range (up to 130 kVp) were found to be less than 3% in average.
Palabras clave:
COMPUTED TOMOGRAPHY
,
GEL DOSIMETRY
,
WATER-EQUIVALENCE
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Articulos(IFEG)
Articulos de INST.DE FISICA ENRIQUE GAVIOLA
Articulos de INST.DE FISICA ENRIQUE GAVIOLA
Citación
Valente, Mauro Andres; Vedelago, José Alberto; Chacón Obando, David; Mattea, Facundo; Velásquez, José; et al.; Water-equivalence of gel dosimeters for radiology medical imaging; Pergamon-Elsevier Science Ltd; Applied Radiation and Isotopes; 141; 11-2018; 193-198
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