> "He uploaded the images of the baby's heart that he got on the CT scan [to a smartphone], and you put it into this cardboard box, and then in his office, I was looking at the baby's heart in a way that I had never been able to do before," said Nicklaus Children's Hospital Dr. Redmond Burke. "With the box, you get a stereoscopic image, and you can move around in the environment to see every part of the heart."
So basically, the surgery itself actually didn't use it at all, the doctor just used it as a stereoscopic viewer for a collection of CT images. But I'm not sure how this is really any different at all from just loading it into a 3D modeler and spinning the camera around. Sure, actual stereoscopic 3D probably makes it easier to get a feel for the dimensions, but there's nothing particularly revolutionary about it that should make an impossible surgery possible.