Smartphone-based Ultrasound device Clarius passes FDA tests

There was a couple of interesting threads on HN about ultrasound machines recently: https://news.ycombinator.com/item?id=13230741 https://news.ycombinator.com/item?id=13241295

I stumbled upon this startup https://www.clarius.me/ which provides an existence proof for a decent ultraportable stethoscope-like ultrasound machine.

Any thoughts on this? How does it change the arguments from these earlier threads?