We use the traditional technology, same as blood pressure monitor, except it is a comprehensive blood pressure monitor, augmenting it, ours is a localized one, on the carotid artery and AV shunt.
We suggest to measure BP first, then flow-Ez, or if you know you have certain issue, use it directly.
We collect as many data as possible, preferably labeled one, as a result, the longer one uses the device it becomes more accurate.
This is quite opposite to any traditional devices, electrical and non-electric alike.
Why not just go to the doctors to do the standard exam? Time, schedule, staff, cost, covid, etc.