Early in my career I was a design engineer making ultrasound transducers for both cardiac and fetal imaging. They are not harmless as we were able to prove continued exposure to ultrasound in the 2 -5 MHz range could cause capitation - or a boiling of the tissues at the focal point. Granted this was with prolonged exposure but nonetheless why expose a developing fetus to unnecessary risk?
Capitation should have been Cavitation.
Early in my career I was a design engineer making ultrasound transducers for both cardiac and fetal imaging. They are not harmless as we were able to prove continued exposure to ultrasound in the 2 -5 MHz range could cause capitation - or a boiling of the tissues at the focal point. Granted this was with prolonged exposure but nonetheless why expose a developing fetus to unnecessary risk?
Why expose a heart patient to unnecessary risk? You can diagnose practically all cardiac problems with a stethoscope.
And how long has it been since you worked on transducers? Ultrasound has progressed a huge amount in 20 years, not to speak of when it was first introduced back in the “Silent Scream” days.