Fricke gel dosimeters for the measurement of the anisotropy function of a HDR IR-192 brachytherapy source

M. Carrara, S. Tomatis, G. Zonca, G. Gambarini, G. Bartesaghi, C. Tenconi, A. Cerrotta, C. Fallai

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

Abstract

The anisotropy function F(r,θ) has been recommended to account for the dose distribution anisotropy that results adopting sealed brachytherapy sources. This function is implemented in the American Association of Physicists in Medicine (AAPM) dose calculation formalism and is widely adopted by the currently available treatment planning systems. In this work, a method based on a suitably developed Fricke gel dosimeter with a built-in catheter and on an optical imaging system was developed for the characterization of F(r,θ) for an Ir-l92 source. At radial distances of 15, 20, 25 and 30 mm percentage differences between tabulated and measured data resulted to be almost always smaller than 3%. Fricke gel dosimeters result to be accurate tools for the Ir-l92 anisotropy function measurement. These instruments could be easily adopted in quality assurance protocolls to verify the anisotropy function of each newly installed Ir-l92 source.

Original languageEnglish
Title of host publicationAstroparticle, Particle and Space Physics, Detectors and Medical Physics Applications - Proceedings of the 11th Conference
Pages610-614
Number of pages5
Publication statusPublished - 2010
Event11th International Conferences on Advanced Technology and Particle Physics, ICATTP 2009 - Como, Italy
Duration: Oct 5 2009Oct 9 2009

Other

Other11th International Conferences on Advanced Technology and Particle Physics, ICATTP 2009
CountryItaly
CityComo
Period10/5/0910/9/09

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Nuclear and High Energy Physics

Fingerprint Dive into the research topics of 'Fricke gel dosimeters for the measurement of the anisotropy function of a HDR IR-192 brachytherapy source'. Together they form a unique fingerprint.

Cite this