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A Comparison of National and International Megavoltage Calibration Protocols

  • Peter R. Almond

Abstract

Although the American Association of Physicists in Medicine (AAPM) protocol for the determination of absorbed dose from high-energy photon and electron beams was published in 1983, it was only one of several national and international protocols that have appeared since 1980. These protocols are concerned with the absorbed dose calibration procedures for megavoltage X-ray and electron beams by ionization chamber measurements. The ionization chambers are calibrated at a single photon energy against a national standard, and since this would be the same for all users in a given country, intercomparison of the national standards determines the consistency of megavoltage dose calibrations after differences in the protocols are taken into account between countries.

Keywords

Ionization Chamber Radiation Dosimetry Standard Precaution ICRU Report Ionization Chamber Measurement 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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    Hospital Physicist’s Association, Phys. Med. Biol. 14, 1 (1969).Google Scholar
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    ICRU report No. 14, Radiation Dosimetry: X-Rays and Gamma Rays with Maximum Photon Energies Between 0.6 and 50 MeV, ICRU, Washington, D.C. (1969); ICRU Report No. 21, Radiation Dosimetry: Electrons with Initial Energies Between 1 and 50 MeV, ICRU, Washington, D.C. (1972).Google Scholar
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    Nordic Association of Clinical Physics, Procedures in radiation therapy dosimetry with 5 to 50 MeV electrons and roentgen and gamma rays with maximum photon energies between 1 MeV and 50 MeV, Acta Radiol. Ther. Phys. Biol. II, 603 (1972).Google Scholar
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    Subcommittee on Radiation Dosimetry, AAPM, Phys Med. Biol. 16, 379 (1971).Google Scholar

Copyright information

© Springer Science+Business Media New York 1986

Authors and Affiliations

  • Peter R. Almond
    • 1
  1. 1.Department of Therapeutic Radiology, James Graham Brown Cancer Center, School of MedicineUniversity of LouisvilleLouisvilleUSA

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