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5th Edition, 2012
MEDICAL ELECTRICAL EQUIPMENT - PART 1: GENERAL REQUIREMENTS FOR BASIC SAFETY AND ESSENTIAL PERFORMANCE *** IEC 60601-1 MODIFIED ***
2009 Edition, March 27, 2009
DIMENSIONING AND TOLERANCING - SEE ALSO ASME Y14.5/DRM COMBO AND Y14.5 STANDARD EASE
3.1 Edition, July 2014
MEDICAL ELECTRICAL EQUIPMENT - PART 1: GENERAL REQUIREMENTS FOR BASIC SAFETY AND ESSENTIAL PERFORMANCE
3rd Edition, April 2012
ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-4: TESTING AND MEASUREMENT TECHNIQUES - ELECTRICAL FAST TRANSIENT/BURST IMMUNITY TEST
3rd Edition, January 1, 2013
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International Electrotechnical Commission (IEC)
This International Standard
• specifies a method of determining the total emitted acoustic
power of ultrasonic transducers based on the use of a radiation
• establishes general principles for the use of radiation
force balances in which an obstacle (target) intercepts the sound
field to be measured;
• establishes limitations of the radiation force method related
to cavitation and temperature rise;
• establishes quantitative limitations of the radiation force
method in relation to diverging and focused beams;
• provides information on estimating the acoustic power for
diverging and focused beams using the radiation force method;
• provides information on assessment of overall measurement
This International Standard is applicable to:
• the measurement of ultrasonic power up to 1 W based on the use
of a radiation force balance in the frequency range from 0,5 MHz to
• the measurement of ultrasonic power up to 20 W based on the
use of a radiation force balance in the frequency range 0,75 MHz to
• the measurement of total ultrasonic power in well-collimated,
diverging and focused ultrasonic fields;
• the use of radiation force balances of the gravimetric
type or force feedback type.
(See also Clause A.1)
NOTE 1 A focused beam is converging in the pre-focal range and
diverging beyond focus.
NOTE 2 Ultrasonic power measurement in the high intensity
therapeutic ultrasound (HITU) range, i.e. beyond 1 W or 20 W,
respectively, is dealt with in the future IEC 62555.