Oh, I have some ultrasound probes lying around - would be very interested in a report!
Well done, although all commercial ultrasounds are just a probe (piezoelectric curved or linear array) connected to a computer, previously over a high speed custom parallel bus, today USB-C will do. Then M-mode or B-mode reconstruction just runs in software. Doppler needs beam-steering etc and is a bit more complex.
Please do! That makes me wonder how hard it would be to make a probe.