Comparative study of spectrophotometric response of the 270 bloom fricke gel dosimeter to clinical photon and electron beams

Abstract

This study aims to compare the spectrophotometric response of the Fricke xylenol gel (FXG) dosimeter developed at IPEN, prepared using 270 Bloom gelatine from porcine skin produced in Brazil, for clinical photons 6 to 18 MV and electron beams with energies between 6 to 16 MeV, to the reference depth using liquid and virtual water phantoms. The optical absorption spectra, dosimetric wavelengths, energy and dose dependent response, sensitivity and lower detection limits were evaluated and compared for both clinical beams. All results obtained in this study are satisfactory and indicate the viability of implementing this dosimeter in photon and electron 3D dosimetry.