Precise radiochromic film dosimetry using a flat-bed document scanner Journal Article

  


Authors: Devic, S.; Seuntjens, J.; Sham, E.; Podgorsak, E. B.; Schmidtlein, C. R.; Kirov, A. S.; Soares, C. G.
Article Title: Precise radiochromic film dosimetry using a flat-bed document scanner
Abstract: In this study, a measurement protocol is presented that improves the precision of dose measurements using a flat-bed document scanner in conjunction with two new GafChromic® film models, HS and Prototype A EBT exposed to 6 MV photon beams. We established two sources of uncertainties in dose measurements, governed by measurement and calibration curve fit parameters contributions. We have quantitatively assessed the influence of different steps in the protocol on the overall dose measurement uncertainty. Applying the protocol described in this paper on the Agfa Arcus II flat-bed document scanner, the overall one-sigma dose measurement uncertainty for an uniform field amounts to 2% or less for doses above around 0.4 Gy in the case of the EBT (Prototype A), and for doses above 5 Gy in the case of the HS model GafChromic® film using a region of interest 2 × 2 mm2 in size. © 2005 American Association of Physicists in Medicine.
Keywords: radiation dose; algorithms; dose-response relationship, radiation; radiation dosage; film dosimeter; radiochromic film dosimetry; film dosimetry; image processing; radiation dose distribution; x ray film; uncertainty analysis; flat-bed scanner; sensitivity curves; computer peripherals; agfa
Journal Title: Medical Physics
Volume: 32
Issue: 7
ISSN: 0094-2405
Publisher: American Association of Physicists in Medicine  
Date Published: 2005-07-01
Start Page: 2245
End Page: 2253
Language: English
DOI: 10.1118/1.1929253
PUBMED: 16121579
PROVIDER: scopus
DOI/URL:

http://www.scopus.com/inward/record.url?eid=2-s2.0-22544440841&partnerID=40&md5=3e85da13b3170a25b7000ca4d6510532
Notes: --- - "Cited By (since 1996): 155" - "Export Date: 24 October 2012" - "CODEN: MPHYA" - "Source: Scopus"
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MSK Authors
  1. Charles Ross Schmidtlein
    107 Schmidtlein
  2. Assen Kirov
    89 Kirov
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