Search results for "X-ray radiotherapy"

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Analysis of the response of PVA-GTA Fricke-gel dosimeters with clinical magnetic resonance imaging

2018

Abstract Fricke gel dosimeters produced with a matrix of Poly-vinyl alcohol (PVA) cross-linked with glutaraldehyde (GTA) were analyzed with magnetic resonance imaging (MRI). Previous studies based on spectrophotometry showed valuable dosimetric features of these gels in terms of X-ray sensitivity and diffusion of the ferric ions produced after irradiation. In this study, MRI was performed on the gels at 1.5 T with a clinical scanner in order to optimize the acquisition parameters and obtain high contrast between irradiated and non-irradiated samples. The PVA gels were found to offer good linearity in the range of 0–10 Gy and a stable signal for several hours after irradiation. The sensitivi…

Nuclear and High Energy PhysicsXylenol orangeMaterials scienceSettore ING-IND/20 - Misure E Strumentazione NucleariDose profileGlutaraldehydeImaging phantom030218 nuclear medicine & medical imagingMatrix (chemical analysis)Gel dosimeter03 medical and health scienceschemistry.chemical_compoundMagnetic resonance imaging0302 clinical medicineNuclear magnetic resonanceIrradiationGlutaraldehydeùInstrumentationPoly-vinyl alcoholX-ray radiotherapyDosimeterSettore FIS/01 - Fisica SperimentaleSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)chemistry030220 oncology & carcinogenesisIonization chamberAgaroseGel dosimeter; Glutaraldehyde; Magnetic resonance imaging; Poly-vinyl alcohol; X-ray radiotherapy; Nuclear and High Energy Physics; InstrumentationSettore MED/36 - Diagnostica Per Immagini E RadioterapiaNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
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