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Review
. 2014;34(3):154-61.

[Primary Standard of Absorbed Dose to Water in High-energy Photon Beam Irradiation]

[Article in Japanese]
Morihito Shimizu
  • PMID: 26288882
Review

[Primary Standard of Absorbed Dose to Water in High-energy Photon Beam Irradiation]

[Article in Japanese]
Morihito Shimizu. Igaku Butsuri. 2014.

Abstract

With the aim of improving the accuracy of photon dosimetry, the primary standard of absorbed dose to water for high-energy photon beams had been established using a graphite calorimeter. The relative expanded uncertainty (k = 2) of the calibration coefficient of absorbed dose to water for high-energy photon beams is 0.8%. The National Metrology Institute of Japan has launched a calibration service for high-energy photon beams in terms of absorbed dose to water in November 2013.

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