andrerath

SOTA ultrasound devices are still very expensive, with e.g. a custom 3D probe with a few hundred piezo elements costing well over 10k. IF they want to use MEMS probe instead of piezo (which is implied by them saying that they will use a chirp), that's going to be even more expensive, considering the lack of manufacturing know-how. When sufficiently scaled, I wouldn't say it is an exorbitant price for large research hospitals, but I am a little skeptical of rolling these out as a health checkup "spa" service outside of areas with extreme wealth concentration (e.g., Silicon Valley? Sure. London? Yeah; Minneapolis? not so sure.)

3D Ultrasound helps a lot in this regard. Getting flow velocity out and tissue motion is very possible if you can support the data rates (in my group we've had some luck getting coronary artery 3D flow out using 3D ultrasound probes). The issue is that 2D ultrasound and flow is an unsolvable problem, so you really do need all 3 dimensions here.

Ultrasound researcher working on fast microvascular imaging here. Depends on the datarates, you can generally get pretty good blood flow data pretty fast, with <.5 seconds per slice if you do it with appropriate algorithms. A lot of this depends on motion though as you said, as the issue is generally getting a high-enough SNR (blood flow is generally 30-40 dB below tissue in energy, except for the biggest of vessels). Generally, higher frequencies have less of a separation between blood and tissue, but they have issue with attenuation. But I think with enough SNR (and with their element count that may indeed be possible), they could get pretty good blood flow data across the whole body.