Not much detail but the LATimes is reporting that:
“There was a misunderstanding about an embedded default setting applied by the machine . . . ,” officials at the renowned Los Angeles hospital said in a written statement that provided no other details about how the error occurred. “As a result, the use of this protocol resulted in a higher than expected amount of radiation.”
The article ends with an interesting footnote:
Dr. Thomas Dehn, a radiologist and chief medical officer for National Imaging Associates Inc., which manages health plans for private insurers, said he believes that overrides are more likely to occur at large, state-of-the-art hospitals.
“At a small hospital, you are not going to try and out-think GE,” he said.
“You have to be pretty confident to think you know more than the guys who designed the equipment.”
This incident reminds me of an incident documented in the book Set Phasers on Stun.
(post image http://www.flickr.com/photos/kayakaya/ / CC BY-SA 2.0)