2015YY/T 1084-2015 Measurement methods of ultrasonic output power for medical diagnostic ultrasonic equipments
2007YY/T 1084-2007 Measurement methods of output power for medical diagnostic ultrasonic equipments
1985YY/T 91084-1999 Methods of measuring the sound power of ultrasonic diagnostic equipment for medical use
YY/T 91084-1999 Methods of measuring the sound power of ultrasonic diagnostic equipment for medical use was changed to YY/T 1084-2007 Measurement methods of output power for medical diagnostic ultrasonic equipments.