Americans get most radiation from medical scans By MARILYNN MARCHIONE 2010-06-14T04:00:46Z We fret about airport scanners, power lines, cell phones and even microwaves. It's true that we get too much radiation. But it's not from those sources - it's from too many medical tests.... © 2010 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.