Milestones in paediatric radiology.

A historical review of paediatric radiology is presented in the light of the 100th anniversary of the Royal Belgian Rodiological Society and the 25th anniversary of Belgian Paediatric Radiology. Key events in the evolution of paediatric radiology are summarized: the early years of radiology on children, the different measurements used to avoid harmful x-ray effects and up to date medical imaging. Some of the most important associations of radiopaediatrics are mentioned, as well as the importance of immobilization of the young patient resulting in specific x-ray instruments.