Consumer Reports deputy content editor Trisha Calvo joins "CBS This Morning" to discuss the story
<a href="http://www.consumerreports.org/cro/magazine/2015/01/the-surprising-dangers-of-ct-sans-and-x-rays/index.htm"><u>A new investigation from Consumer Reports</u></a> found the number of CT scans grew from 3 million a year in 1980 to 80 million today, and up to one-third of them could be unnecessary. Consumer Reports deputy content editor Trisha Calvo joins "CBS This Morning" to discuss the story.
