Check out this video from Realview. They developed a holographic visualization system that was actually used in the Operating Theatre.
This really looks like a breakthrough technology that could have major impact on the way three-dimensional imaging data of patients is used in the operating room. Their current hardware looks a bit bulky for the already crowded OR, but this might become smaller in the future to allow real integration. Big advantage is the ability to have touch-less interaction with the 3D holographic image which is a huge benefit in the OR.
Also check-out their website at www.realviewimaging.com