title: Consistency and simplicity in the determination of absorbed dose to water in high-energy photon beams: a new code of practice.
abstract: Recent revision of exposure and air kerma standards in Standards Laboratories require a simultaneous change in physical parameters at other positions in the dosimetry chain. Adoption of new data, recommended by international organizations, will introduce changes in absorbed dose determinations in high-energy photon beams using ionization chambers. A new code of practice has therefore been drafted using a consistent set of data. In this code of practice, single conversion factors are given to convert ionization chamber reading to absorbed dose to water for some types of reference ionization chamber as a function of radiation quality. Equations and recommended numerical data for the physical parameters and correction and conversion factors will be provided.
mesh_terms: D002138:Calibration; D011829:Radiation Dosage; D014867:Water
chemical_list: D014867:Water