A practical guide for paediatric diagnostic reference levels (PiDRLs).

This guide was designed to provide a foundation for developing paediatric diagnostic reference levels (PiDRLs) for conventional radiography. In principle, the calculation of diagnostic reference levels (DRLs) is recommended for diagnostic x-ray imaging examinations for radiosensitive patients, such as paediatric patients. PiDRLs are fundamentally important when considering dose optimisation in diagnostic radiology, computed tomography and interventional radiology for paediatric patients.