CHICAGO (AP) — Soaring numbers of kids are getting CT scans in emergency rooms, a study found, raising concerns some may be exposed to adult-sized radiation doses and potential risks for cancer down the road.

The number of ER visits nationwide in which children were given CT scans surged from about 330,000 in 1995 to 1.65 million in 2008 — a five-fold increase. The number of kids' ER visits didn't increase measurably during the study, but the percentage of visits involving CT scans climbed from about 1 percent to almost 6 percent.

Increases occurred at children's hospitals but also at general hospitals, where most kids are treated, and which raises concerns some may have gotten adult-sized doses of radiation. The study didn't include dose information, but general hospitals may be less likely than pediatric facilities to use special CT protocols with kids to limit their radiation exposure, the study authors said.