This technical specification describes: - test methods for measuring the performance of pulsed Doppler ultrasound systems; - Doppler test objects for carrying out these tests; and applies to - tests made on an overall pulsed Doppler ultrasound system, a system which is not disassembled or disconnected; - tests made on pulsed Doppler ultrasound systems whether they are stand-alone or as part of another ultrasound equipment.