Wes Groleau wrote:

just like no civillians in the present United States can own or
obtain live hand grenades, shoulder-launched rockets, machine guns,
medical ultrasound scanners, MRI and x-ray scanners, various drugs,
other licensed industrial, medical and military products, etc).

I am not aware of any law preventing someone with enough money to
purchase an ultrasound machine.

Companies that make ultrasound machines can't sell them to someone who
isin't a licensed doctor.