***You have not read the literature.***
It was just one of my bio-medical research projects in College. ;)
Then I ask how many years ago? What countries lit did you “study”? What power levelsfor the ultra sound? What experience levels for the operators? Was it 3d or 4d or was it earlier than that? See reading old lit does not mean ANYTHING by itself. After all the “old” lit that loks at effects looks at limited numbers of cases ( since after all ultra sound was not routinely done by Obs)with smaller doseages than currently used.