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Title: Absolute dosimetric characterization of Gafchromic EBT3 and HDv2 films using commercial flat-bed scanners and evaluation of the scanner response function variability

Abstract

Radiochromic films (RCF) are commonly used in dosimetry for a wide range of radiation sources (electrons, protons, and photons) for medical, industrial, and scientific applications. They are multi-layered, which includes plastic substrate layers and sensitive layers that incorporate a radiation-sensitive dye. Quantitative dose can be retrieved by digitizing the film, provided that a prior calibration exists. Here, to calibrate the newly developed EBT3 and HDv2 RCFs from Gafchromic™, we used the Stanford Medical LINAC to deposit in the films various doses of 10 MeV photons, and by scanning the films using three independent EPSON Precision 2450 scanners, three independent EPSON V750 scanners, and two independent EPSON 11000XL scanners. The films were scanned in separate RGB channels, as well as in black and white, and film orientation was varied. We found that the green channel of the RGB scan and the grayscale channel are in fact quite consistent over the different models of the scanner, although this comes at the cost of a reduction in sensitivity (by a factor ∼2.5 compared to the red channel). To allow any user to extend the absolute calibration reported here to any other scanner, we furthermore provide a calibration curve of the EPSON 2450 scannermore » based on absolutely calibrated, commercially available, optical density filters.« less

Authors:
; ;  [1];  [2]; ; ;  [3];  [4];  [1];  [1];  [5];  [6];  [7];  [8]
  1. LULI-CNRS, Ecole Polytechnique, CEA: Universite Paris-Saclay, UPMC Univ Paris 06, Sorbonne Universities, F-91128 Palaiseau Cedex (France)
  2. (Russian Federation)
  3. SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025 (United States)
  4. Department of Physics and Astronomy, University of Victoria, Victoria, British Columbia V8P 5C2 (Canada)
  5. (France)
  6. INRS-EMT, Varennes, J3X1S2 Québec (Canada)
  7. ELI-ALPS, ELI-HU non profit kft, Dugonics ter 13, H-6720, Szeged (Hungary)
  8. Institute of Applied Physics, 46 Ulyanov Street, 603950 Nizhny Novgorod (Russian Federation)
Publication Date:
OSTI Identifier:
22597800
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 87; Journal Issue: 7; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ACCURACY; CALIBRATION; COMPARATIVE EVALUATIONS; DIAGRAMS; DOSIMETRY; DYES; ELECTRONS; FILMS; FILTERS; LINEAR ACCELERATORS; MEV RANGE 01-10; OPACITY; PHOTONS; PLASTICS; PROTONS; RADIATION SOURCES; RESPONSE FUNCTIONS; SENSITIVITY; SUBSTRATES

Citation Formats

Chen, S. N., Revet, G., Fuchs, J., Institute of Applied Physics, 46 Ulyanov Street, 603950 Nizhny Novgorod, Gauthier, M., Glenzer, S., Propp, A., Bazalova-Carter, M., Bolanos, S., Riquier, R., CEA, DAM, DIF, F-91297 Arpajon, Antici, P., Morabito, A., and Starodubtsev, M.. Absolute dosimetric characterization of Gafchromic EBT3 and HDv2 films using commercial flat-bed scanners and evaluation of the scanner response function variability. United States: N. p., 2016. Web. doi:10.1063/1.4954921.
Chen, S. N., Revet, G., Fuchs, J., Institute of Applied Physics, 46 Ulyanov Street, 603950 Nizhny Novgorod, Gauthier, M., Glenzer, S., Propp, A., Bazalova-Carter, M., Bolanos, S., Riquier, R., CEA, DAM, DIF, F-91297 Arpajon, Antici, P., Morabito, A., & Starodubtsev, M.. Absolute dosimetric characterization of Gafchromic EBT3 and HDv2 films using commercial flat-bed scanners and evaluation of the scanner response function variability. United States. doi:10.1063/1.4954921.
Chen, S. N., Revet, G., Fuchs, J., Institute of Applied Physics, 46 Ulyanov Street, 603950 Nizhny Novgorod, Gauthier, M., Glenzer, S., Propp, A., Bazalova-Carter, M., Bolanos, S., Riquier, R., CEA, DAM, DIF, F-91297 Arpajon, Antici, P., Morabito, A., and Starodubtsev, M.. Fri . "Absolute dosimetric characterization of Gafchromic EBT3 and HDv2 films using commercial flat-bed scanners and evaluation of the scanner response function variability". United States. doi:10.1063/1.4954921.
@article{osti_22597800,
title = {Absolute dosimetric characterization of Gafchromic EBT3 and HDv2 films using commercial flat-bed scanners and evaluation of the scanner response function variability},
author = {Chen, S. N. and Revet, G. and Fuchs, J. and Institute of Applied Physics, 46 Ulyanov Street, 603950 Nizhny Novgorod and Gauthier, M. and Glenzer, S. and Propp, A. and Bazalova-Carter, M. and Bolanos, S. and Riquier, R. and CEA, DAM, DIF, F-91297 Arpajon and Antici, P. and Morabito, A. and Starodubtsev, M.},
abstractNote = {Radiochromic films (RCF) are commonly used in dosimetry for a wide range of radiation sources (electrons, protons, and photons) for medical, industrial, and scientific applications. They are multi-layered, which includes plastic substrate layers and sensitive layers that incorporate a radiation-sensitive dye. Quantitative dose can be retrieved by digitizing the film, provided that a prior calibration exists. Here, to calibrate the newly developed EBT3 and HDv2 RCFs from Gafchromic™, we used the Stanford Medical LINAC to deposit in the films various doses of 10 MeV photons, and by scanning the films using three independent EPSON Precision 2450 scanners, three independent EPSON V750 scanners, and two independent EPSON 11000XL scanners. The films were scanned in separate RGB channels, as well as in black and white, and film orientation was varied. We found that the green channel of the RGB scan and the grayscale channel are in fact quite consistent over the different models of the scanner, although this comes at the cost of a reduction in sensitivity (by a factor ∼2.5 compared to the red channel). To allow any user to extend the absolute calibration reported here to any other scanner, we furthermore provide a calibration curve of the EPSON 2450 scanner based on absolutely calibrated, commercially available, optical density filters.},
doi = {10.1063/1.4954921},
journal = {Review of Scientific Instruments},
number = 7,
volume = 87,
place = {United States},
year = {Fri Jul 15 00:00:00 EDT 2016},
month = {Fri Jul 15 00:00:00 EDT 2016}
}