[Ultrasound diagnosis in pediatrics]

For many years, from the discovery of X-ray up today, medical morfological diagnosis has been based on the analysis of radiographic image. Having regard to the potential risks of ionizing radiations, radiological exploration can not be taken into account as they are harmful, and in some cases they can become dangerous. Authors point out that an abusive using of radiological exploration exists in our country. As for children, a negligent use of radiology can reach very concerned limits. Ultrasound systems which are currently available, used before radiology in a systematical manner, can resolve a morfological diagnostic in many cases, in a sure and faster way, with the great advantage to be a risk-less procedure because ultrasounds are mechanical not ionizing waves. Six cases are shown as an example of the diagnostic possibilities of ultrasound in pediatrics.