> If you believe ultrasound categorically can not penetrate the skull No, of course bone can conduct sound, like any other solid. What I said was ultrasound ca

> If you believe ultrasound categorically can not penetrate the skull No, of course bone can conduct sound, like any other solid. What I said was ultrasound cannot *effectively* penetrate, ie get a diagnostic image back out in an adult. This is what is being purported here, and is the nonsensical part.