On: Histotripsy – a technique that harnesses soundwave...

[ugh123]

Makes sense but what if there's another organ in the way?

[stubish → ugh123]

I think the way it works is you have sound from multiple sources, and you time the sound waves so that the peaks and troughs all hit the targeted area at the same time. Each individual 'beam' is harmless, but at the point of intersection they add up and can do damage.