Intercomparison of gafchromic™ films, TL detectors and TL foils for the measurements of skin dose in interventional radiology

R. Kopeć, L. Novák, E. Carinou, I. Clairand, J. Dabin, H. Datz, C. De Angelis, J. Farah, C. Huet, [No Value] Knežević, H. Järvinen, M. Majer, F. Malchair, A. Negri, S. Haruz Waschitz, T. Siiskonen, A. Szumska, A. Trianni, F. Vanhavere

Research output: Contribution to journalArticlepeer-review

Abstract

Several passive solid state dosemeters, such as Gafchromic™ films and thermoluminescence (TL) detectors, are used to estimate and monitor patient skin doses in interventional radiology. To determine the suitability of XR-TypeR Gafchromic™ films and of detectors based on TL materials: pellets, chips and foils to measure skin dose, an intercomparison exercise has been organized within European Dosimetry Radiation Group - Working Group 12 "European Medical ALARA Network" (EURADOS WG12). To test response detectors were exposed to X-ray beams of energies and qualities applied clinically. A blind test was also performed to investigate the accuracy of the dose estimate by detectors exposed to unknown doses. We found the response of films to be strongly dependent on beam quality and filtration (increasing by up to 80% with respect to reference beam quality). The response of TL detectors was found to be less dependent on beam quality (less than 25% variation), with TL foils showing less than 10% variation with respect to reference beam quality. To accurately estimate patient skin doses in interventional radiology it is important to choose the quality of the calibration beam to be as close as possible to the quality of beams actually applied in clinical work.

Original languageEnglish
Pages (from-to)282-286
Number of pages5
JournalRadiation Measurements
Volume71
DOIs
Publication statusPublished - 2014

Keywords

  • Radiochromic films
  • Skin doses in interventional radiology
  • Thermoluminescence (TL) detectors
  • TL foils

ASJC Scopus subject areas

  • Radiation
  • Instrumentation

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