Dosimetry and Medical Radiation Physics (DMRP)

Quality Audits in Radiotherapy Dosimetry

The successful application of nuclear technology in the health care sector, particularly in the case of radiotherapy treatment of cancer patients, depends strongly on assuring accuracy in dose measurements and dose delivery. A key element in quality assurance is an independent verification or audit of radiation dose delivery at the end-user institution, i.e. a radiotherapy hospital. In response to requests by Member States, the Agency provides dose quality audits to over 1300 end-user institutions in regions that have no other means to participate in a dose verification process. Thermoluminescent dosimetry (TLD) is used as the basis of the Agency’s dose audits in radiotherapy since it offers adequate precision and reliability of operation to serve the auditing purpose well. An integral part of the auditing process is resolving discrepancies that are discovered. The Agency’s audit services are co-ordinated with national audit networks operating in some Member States and with NGOs that provide dose audits in industrialized countries. Organizations such as the WHO and the BIPM are active partners with the Agency in providing these services.

The IAEA/WHO TLD Postal Dose Assurance Service for radiotherapy dosimetry