High Intensity Focused Ultrasound Treatment

I have been looking into studying how to treat cancer, and looking into what sort of cancer treatments appear to offer the most promise. I was interested in prostate cancer research because of my grandfather and one of my favorite uncles, so I started looking into that. It appears that one promising avenue of treatment is high intensity focused ultrasound radiation. Of course all of my friends made a lot of coarse and unfunny jokes when they saw how it is done, which is transrectally. Of course if you want to get close to the prostate, that is the best line of approach and it does not requires you to cut into a patient.