Ultrasound does active wound healing

The applications of ultrasound, (ultrasonic frequencies through (sort of) solid materials, such as flesh and organs and even various fluids, will definitely grow, since these frequencies do allow a lot of information to be found. So seeing through things without radiation is a great new field. BUT there is also a down-side. Just because most of us humans can't hear or feel this sound does not mean that others hear and feel nothing. When you see the untrasonic scan of a fetus and it tries to cover it's ears, just consider that there may be some feeling going on. Fluid coupling works much better than air coupling, and it is entirely possible to rach levels that would not be acceptable at a loud concert. So perahps we need to think carefully and watch what is happening.