Evaluation of ionization chamber stability checks using various sources

Regulatory bodies, such as the United States Nuclear Regulatory Commission (NRC), and professional bodies, such as the International Commission on Radiation Units and Measurements (ICRU) and the American Association of Physicists in Medicine (AAPM) recommend the calibration of ionization chambers at least once every two years [1 –3]. To ensure the chamber's stability between calibrations, regular, independent quality assurance (QA) checks should be performed. The Addendum to the AAPM Task Group 51 Report states that the use of 60Co irradiators is the best method for monitoring chamber stability [4].
Source: Physica Medica: European Journal of Medical Physics - Category: General Medicine Authors: Tags: Technical note Source Type: research