Fricke gel dosimeter tissue-equivalence: A Monte Carlo study

M. Valente, G. Bartesaghi, G. Gambarini, D. Brusa, G. Castellano, M. Carrara

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Gel dosimetry has proved to be a valuable technique for absorbed dose distribution measurements in radiotherapy. FriXy-gel dosimeters consist of Fricke (ferrous sulphate) solution infused with xylenol orange. The solution is incorporated to a gel matrix in order to fix it to a solid structure allowing good spatial resolution and is imaged with a transportable optical system, measuring visible light transmittance before and after irradiation. This paper presents an evaluation of total photon mass attenuation coefficients at energies in the range of 50 keV-1OMeV for the radiochromic FriXy gel dosimeter sensitive material. Mass attenuation coefficient estimations have been performed by means of Monte Carlo (PENELOPE) simulations. These calculations have been carried out for the FriXy gel sensitive material as well as for soft tissue (ICRU) and pure liquid water; a comparison of the obtained data shows good agreement between the different materials.

Original languageEnglish
Title of host publicationAstroparticle, Particle and Space Physics, Detectors and Medical Physics Applications - Proceedings of the 10th Conference
Number of pages5
Publication statusPublished - 2008
EventInternational Conference on Advanced Technology and Particle Physics, ICATPP 2007 - Como, Italy
Duration: Oct 8 2007Oct 12 2007


OtherInternational Conference on Advanced Technology and Particle Physics, ICATPP 2007

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Nuclear and High Energy Physics


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