Evaluation of a Gafchromic EBT2 film dosimetry system for radiotherapy quality assurance.

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  • Author(s): Aland T;Aland T; Kairn T; Kenny J
  • Source:
    Australasian physical & engineering sciences in medicine [Australas Phys Eng Sci Med] 2011 Jun; Vol. 34 (2), pp. 251-60. Date of Electronic Publication: 2011 Apr 05.
  • Publication Type:
    Journal Article; Research Support, Non-U.S. Gov't
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: Springer Country of Publication: Netherlands NLM ID: 8208130 Publication Model: Print-Electronic Cited Medium: Print ISSN: 0158-9938 (Print) Linking ISSN: 01589938 NLM ISO Abbreviation: Australas Phys Eng Sci Med Subsets: MEDLINE
    • Publication Information:
      Publication: 2009-2019 : Dordrecht : Springer
      Original Publication: Melbourne : Australasian College Of Physical Scientists In Medicine
    • Subject Terms:
      Film Dosimetry/*instrumentation ; Radiotherapy/*instrumentation ; X-Ray Film/*standards; Dose-Response Relationship, Radiation ; Film Dosimetry/methods ; Film Dosimetry/standards ; Quality Control ; Radiotherapy/methods ; Radiotherapy/standards ; Reproducibility of Results
    • Abstract:
      This study examines the dosimetric accuracy of Gafchromic EBT2 model radiochromic film for use in radiotherapy quality assurance. In this study, film was scanned using an Epson Perfection V700 flatbed scanner in transmission mode at 75 DPI with the subsequent analysis performed using the red and blue colour channels and ImageJ software. Results of this study suggest that the conversion of film optical density to measured dose should, at present, utilise red channel data only, without application of a blue channel correction to the data. For the batch of film examined here, film uniformity and reproducibility appear to have improved compared with published results using older batches. The orientation of the film on the scanner and the side of the film facing the light source were found to have substantial effects on results. Based on the results of this study, it is possible to recommend the use of EBT2 film in routine quality assurance testing for radiotherapy, in situations where a dose uncertainty of up to 2.8% is acceptable.
    • Publication Date:
      Date Created: 20110406 Date Completed: 20110913 Latest Revision: 20161021
    • Publication Date:
      20240829
    • Accession Number:
      10.1007/s13246-011-0072-6
    • Accession Number:
      21465275