Overscan

Everyone loves CT scans. They can provide useful information to physicians, generate profit for hospitals and imaging centers, and patients think they look pretty cool and high tech.Alas, there are some downsides. I've mentioned radiation exposure before. Now a study by a U of Wisconsin researcher suggests that doing a CT when a patient has the classic signs of appendicitis is not only unnecessary but also puts patients at risk by delaying their time to surgery.It says something about the inefficiency of hospital workflow that having a CT scan increased the mean time from presentation to surgery by more than 3 hours!