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A conversion method of air kerma from the primary, scatter, and leakage radiations to effective dose for calculating x‐ray shielding barriers in mammography
Author(s) -
Kharrati Hedi
Publication year - 2005
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.1895526
Subject(s) - kerma , mammography , dosimetry , electromagnetic shielding , medical physics , metrology , radiation protection , primary standard , nuclear medicine , physics , optics , medicine , calibration , cancer , quantum mechanics , breast cancer
In this study, a new approach has been introduced for derivation of the effective dose from air kerma to calculate shielding requirements in mammography facilities. This new approach has been used to compute the conversion coefficients relating air kerma to the effective dose for the mammography reference beam series of the Netherlands Metrology Institute Van Swinden Laboratorium, National Institute of Standards and Technology, and International Atomic Energy Agency laboratories. The results show that, in all cases, the effective dose in mammography energy range is less than 25% of the incident air kerma for the primary and the scatter radiations and does not exceed 75% for the leakage radiation.