DIRAC (DIrectory of RAdiotherapy Centres)
Since 1959, the IAEA has maintained a register of radiotherapy hospitals and clinical institutions having radionuclide and high-energy teletherapy machines. The Directory of Radiotherapy Centres (DIRAC) was first published in book form in 1968. The present electronic version of the Directory is a continuous update, based on replies to questionnaires circulated by the IAEA among its Member States. It includes data not only on teletherapy machines, but also on sources and devices used in brachytherapy, and on equipment for dosimetry, patient dose calculation and quality assurance.