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.
IEC 61685:2001 history
2001IEC 61685:2001 Ultrasonics - Flow Measurement Systems - Flow Test Object (Edition 1.0)