DS DS/EN 61685
DS DSEN 61685 2002-JUL-08 Ultrasoncs - Flow measurement systems - Flow test object
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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 diagnostics equipment.