Diagnostic imaging in the evaluation of the first urinary tract infection in infants and young children.

The evaluation of infants and children after the first urinary tract infection has undergone change in recent years. Standard diagnostic imaging studies are being utilized on a more frequent basis, because these procedures can provide information which often has a direct impact on patient care. Selection of the proper tests requires an understanding of how they are performed and the basis for their choice. The rationale for the use of different imaging studies and their application to patient care are discussed.