This project from Israeli company InSightec seems relevant.
It is disruptive technology.
If the link doesn't work, Google "By Jonathan Leow and Aya Ephrati, NoCamels · July 4, 2013"
"Focused ultrasound can serve as a heating device. Unlike light, that cannot penetrate skin, focused ultrasound is able to. On the other hand, MRI is a viewing device. When you put the two together, then we can treat targets inside the body and at the same time see what is going on."
The web page contains links and a video.
14 August 2013 at
04:27 PM by