Published: Jul 09, 2010 7:25 PM EDT
Updated: Jul 09, 2010 4:26 PM EDT

MIAMI, Fla - A new study shows some Florida hospitals might be overusing medical scans that deliver a double dose of radiation.

Health News Florida reports on Friday that combination CT scans of the chest and abdomen are recommended to be used for only a handful of conditions. But according to a study by the Centers for Medicare and Medicaid Services, some hospitals throughout the state have used them on two out of three outpatients needing abdominal or chest CT studies.

Barry Straube, chief medical officer with the CMS, said some of the combination scans were certainly unnecessary.  The study also says Florida hospitals averaged using the combination scans 13 percent of the time a scan was needed. In February, the Food and Drug Administration announced it was going to increase regulation of all CT scans.

The study is available on the government's Hospital Compare website.