Search results for "Gel Fricke"

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LOW DOSE CHARACTERIZATION OF FRICKE GEL DOSIMETERS BY OPTICAL ABSORBANCE AND MR RELAXATION METHODS

2016

Introduction Fricke gel dosimeters allow measurements of 3D dose distributions and can be an effective tool for dosimetry verifications in radiotherapy. Various authors have reported drawbacks of the gels affecting the accuracy in case of low dose measurements. Purpose This study aims at investigating such drawbacks and at establishing the conditions for an optimal use of the gels. Materials and methods Our dosimeters consist of gels infused with a Fricke ferrous sulphate solution combined with xylenol orange (XO). Two kinds of xylenol orange (XO) and two different gelling agents (gelatin from porcine skin and Agarose) were utilized. Gels are red out by light absorption techniques: images o…

Xylenol orangefood.ingredientMaterials scienceSettore ING-IND/20 - Misure E Strumentazione NucleariBiophysicsAnalytical chemistryGeneral Physics and AstronomyGelatin030218 nuclear medicine & medical imagingAbsorbance03 medical and health scienceschemistry.chemical_compoundGel Fricke0302 clinical medicinefoodNuclear magnetic resonanceAgaroseDosimetryRadiology Nuclear Medicine and imagingIrradiationDosimeterSettore FIS/01 - Fisica SperimentaleGeneral MedicineSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)WavelengthchemistryFricke gel030220 oncology & carcinogenesisAgarose

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