Since 2010. and 2012. foundational researches, namely “Generation and control of sound bullets with a nonlinear acoustic lens” & “Carbon-Nanotube Optoacoustic Lens for Focused Ultrasound Generation and High-Precision Targeted Therapy”, sound bullets and ultrasonic surgery are fast becoming reality.
Checkout wiki on High-intensity focused ultrasound.
OUT OF MANY COME DUB AND OUT OF DUB COME ONE 