Helical (spiral) CT has a number of potential advantages over conventi
onal CT in the examination of pediatric patients. The most important a
dvantages are the shorter examination time, which decreases image degr
adation from motion artifact, even in infants and young children; the
capability for retrospective image reconstruction, which decreases ima
ge degradation from volume averaging; and improved multiplanar reconst
ruction. Continued clinical experience will advance the pediatric appl
ications of helical (spiral) CT scanning.