Optical images of dose distributions in Gel-Fricke: dosimetric performances of the gel.
Radiat Prot Dosimetry
; 122(1-4): 455-6, 2006.
Article
em En
| MEDLINE
| ID: mdl-17186949
ABSTRACT
The purpose of this work was to examine the dosimetric performances of the radiochromic Fricke-Agarose-Xylenol Orange gel by optical measurements in order to perform dose reconstructions, in view of a future development for 3-D maps. Optical images and dose-response curves of the gel were obtained by a CCD-based device, originally designed for reading radiochromic films, that was modified to meet the optical properties of the dosemeter. With a resolution of 0.18 x 0.18 mm the optimum range of doses in which per cent uncertainty is lower than 2% was 3-10 Gy. The minimum detectable dose, estimated as the absorbed dose corresponding to 3 SD above background, was 0.1 Gy. With a resolution of 1.98 x 1.98 mm the optimum range of doses in which per cent uncertainty is lower than 2% was 0.3-10 Gy. The minimum detectable dose, estimated as the absorbed dose corresponding to 3 SD above background, was 0.015 Gy. The comparison with alanine dosemeters in the dose range 7-10 Gy showed agreement within a few per cent and the same agreement was observed for the comparison with TLD in the range 1-3 Gy.
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Base de dados:
MEDLINE
Assunto principal:
Fotometria
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Radiometria
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Nanotecnologia
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Óptica e Fotônica
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Géis
Tipo de estudo:
Diagnostic_studies
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Evaluation_studies
Idioma:
En
Revista:
Radiat Prot Dosimetry
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Itália