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Updated: Aug 19, 2026

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
Published on: March 11, 2021
Development of a secondary standard for the absorbed dose to water based on the alanine EPR dosimetry system
1Physikalisch-Technische Bundesanstalt, FB6.2 Dosimetrie fuer die Strahlentherapie, Bundesallee 100, D-38116 Braunschweig, Germany. mathias.anton@ptb.de
Abstract:
The primary measurand in the dosimetry for radiation therapy is the absorbed dose to water, D(W). An alanine/EPR based secondary standard for D(W) for high-energy photon and electron radiation is presently under construction at the Physikalisch-Technische Bundesanstalt. A technique of transfer dosimetry that makes it possible to reduce the reproducibility to a level below 0.5% in the 5-50 Gy range is presented. It takes advantage of a reference sample. Results of investigations of some effects, such as environmental humidity, are presented.
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