In this work, recent results about the dependence of the response of poly(vinyl-alcohol)-glutaraldehyde Fricke gel dosimeters on the irradiation and holding temperatures are reported. The investigations were carried out by two complementary techniques commonly used in gel dosimetry, namely spectrophotometry and MRI. No significant dependence of the dosimeters sensitivity on the irradiation temperature in the range 20 ° C-35 ° C was observed. On the contrary, the holding temperature effects resulted to be not negligible. This work, based on literature results, highlights the limits and the capability of these dosimeters in the 3D dose mapping for clinical practice applications.

Characterization of PVA-GTA Fricke gels dosimeters using MRI and optical techniques in X-rays external radiation therapy / S. Gallo, P. Arosio, S. Locarno, F. Orsini, M.G. Brambilla, G. Gambarini, D. Lizio, A.F. Monti, A. Torresin, C. Lenardi, I. Veronese. - In: IL NUOVO CIMENTO C. - ISSN 2037-4909. - 44C:4-5(2021), pp. 133.1-133.4. ((Intervento presentato al 106. convegno SIF tenutosi a Telematico nel 2020 [10.1393/ncc/i2021-21133-3].

Characterization of PVA-GTA Fricke gels dosimeters using MRI and optical techniques in X-rays external radiation therapy

S. Gallo
Primo
Conceptualization
;
P. Arosio
Methodology
;
S. Locarno
Formal Analysis
;
F. Orsini
Methodology
;
G. Gambarini
Validation
;
A. Torresin
Validation
;
C. Lenardi
Penultimo
Validation
;
I. Veronese
Ultimo
Supervision
2021

Abstract

In this work, recent results about the dependence of the response of poly(vinyl-alcohol)-glutaraldehyde Fricke gel dosimeters on the irradiation and holding temperatures are reported. The investigations were carried out by two complementary techniques commonly used in gel dosimetry, namely spectrophotometry and MRI. No significant dependence of the dosimeters sensitivity on the irradiation temperature in the range 20 ° C-35 ° C was observed. On the contrary, the holding temperature effects resulted to be not negligible. This work, based on literature results, highlights the limits and the capability of these dosimeters in the 3D dose mapping for clinical practice applications.
Dosimetry; Fricke Gel; PVA; GTA; LINAC
Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin)
Settore CHIM/02 - Chimica Fisica
Settore MED/36 - Diagnostica per Immagini e Radioterapia
https://www.sif.it/riviste/sif/ncc/econtents/2021/044/04-05/article/27
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/875212
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