This international Standard specifies parameters for a flow Doppler test object representing a blood vessel of known diameter at a certain depth in human tissue,carrying a steady flow.
This international Standard establishes a flow Doppler test object which can be used to assess various aspects of the performance of Doppler diagnostic equipment.
BS EN 61685:2002 history
2002BS EN 61685:2002 Ultrasonics. Flow measurement systems. Flow test object