50 years of the IAEA/WHO postal dose audits for radiotherapy

For more than 40 years the IAEA has operated a service to validate the calibration of radiotherapy beams in low and middle income countries using the IAEA/WHO TLD postal dose audit service. This service provides a quality audit of the dose delivered by radiotherapy treatment machines using a thermoluminescent dosimeter (TLD) as a transfer dosimeter. The IAEA is responsible for the technical aspects of the service, whereas the World Health...