Fricke gel dosimeters with low-diffusion and high-sensitivity based on a chemically cross-linked PVA matrix

Marini, A. C.; Lazzeri, Luigi; Cascone, Maria Grazia; Ciolini, Riccardo; Tana, L.; D’Errico, Francesco

doi:10.1016/j.radmeas.2017.02.012

Cited by 57 publications

(42 citation statements)

References 8 publications

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“…The PVA Mowiol ® 18-88, produced by Sigma-Aldrich, was employed in this experiment. The complete dissolution of Mowiol ® 18-88 in water can be easily obtained in approximately 40 minutes at 70°C, without the use of proper equipment required for other PVA compounds, as autoclave [30,38] or open vessel microwave digestion [32,37]. The other components used to prepare the PVA-GTA Fricke gel dosimeters were: Ferrous ammonium sulfate hexahydrate (FAS, Carlo Erba), Xylenol Orange tetrasodium sodium salt (XO, Riedel-de Haën), Glutaraldehyde (GTA, Sigma-Aldrich), and Sulfuric acid (SA, Sigma-Aldrich).…”

Section: Samples Preparationmentioning

confidence: 99%

Temperature behavior of radiochromic poly(vinyl-alcohol)-glutaraldehyde Fricke gel dosimeters in practice

Gallo

Lizio

Monti

et al. 2020

J. Phys. D: Appl. Phys.

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The use of synthetic gel matrices prepared with poly(vinyl-alcohol) (PVA) cross-linked by glutaraldehyde (GTA) contributed to enhance the interest toward radiochromic Fricke gel (FG) dosimeters. As it occurs in several chemical dosimeters, the response of PVA-GTA Fricke gels could be affected by temperature. Aim of this work is to study the dependence of the dosimetric properties of PVA-GTA Fricke gel dosimeters both on the irradiation temperature and on temperature changes possibly occurring between the irradiation and readout phases. Such effects were investigated by means of magnetic resonance imaging (MRI) and optical absorbance (OA) measurements.

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Section: Samples Preparationmentioning

confidence: 99%

Temperature behavior of radiochromic poly(vinyl-alcohol)-glutaraldehyde Fricke gel dosimeters in practice

Gallo

Lizio

Monti

et al. 2020

J. Phys. D: Appl. Phys.

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“…We performed the experiments using dosimeters prepared with a gel matrix composed by synthetic hydrogels based on poly(vinyl-alcohol) (PVA) chemical cross-linked with glutaraldehyde (GTA) and loaded with XO. Such composition proved to be characterized by a diffusion rate of ferric ions significantly lower that what achievable with natural gel matrices like gelatin from porcine skin and agarose [39,40]. For this reason, the interest toward PVA-GTA Fricke gel dosimetry is gaining importance, as attested by the increasing literature about this topic [41][42][43][44][45][46][47].…”

Section: Introductionmentioning

confidence: 99%

Effect of ionizing radiation on the colorimetric properties of PVA-GTA Xylenol Orange Fricke gel dosimeters

et al. 2021

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…These materials are not toxic and have a lower diffusion coefficient than the standards Fricke gels. The increase in GTA concentration is a viable method to reduce the diffusion of ions into the gel matrix [7] . The other type is polymer gel, which contains monomers dissolved in a gel matrix based on radiation induced polymerization and crosslinking of acrylic monomers [2,8] .…”

Section: Introductionmentioning

confidence: 99%

Preliminary analysis of N-vinylpyrrolidone based polymer gel dosimeter

et al. 2018

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This paper aims to evaluate the dosimetric characteristics of modified VIPARnd for radiotherapy dosimetry using optical investigations. The absorbance spectrum of the irradiated gel dosimeter was evaluated optically with spectrophotometer techniques and with a CMOS imaging system. The useful dose range for the peak value and the relative area under the absorbance curve is 3-20 Gy. The dose-response curve for CMOS readout has an interval of linearity from 3-20 Gy. The modified VIPARnd developed has a good dose range and good temporal stability in the spectrophotometric analysis of the intervals studied. The CMOS readout is transportable, cheaper, easier to use and an excellent alternative for dosimetry.

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Fricke gel dosimeters with low-diffusion and high-sensitivity based on a chemically cross-linked PVA matrix

Cited by 57 publications

References 8 publications

Temperature behavior of radiochromic poly(vinyl-alcohol)-glutaraldehyde Fricke gel dosimeters in practice

Temperature behavior of radiochromic poly(vinyl-alcohol)-glutaraldehyde Fricke gel dosimeters in practice

Effect of ionizing radiation on the colorimetric properties of PVA-GTA Xylenol Orange Fricke gel dosimeters

Preliminary analysis of N-vinylpyrrolidone based polymer gel dosimeter

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