[...]
> A carotid ultrasound, sometimes called a Doppler scan, takes an average of 15 to 30 minutes for most people, although this can vary. A small handheld sensor is moved back and forth over the neck, generating sound waves which bounce off the arteries.
SO - why can't a simple blood pressure measurement screen for that "become less flexible" issue? Without needing any fancier equipment, higher-skill personnel, or longer test?
bp = TakeBloodPressure()
IF( NotHigh( bp ) )
THEN
DONE
ELSE
InvestigateCause( bp )