Statement on Data Needed to Characterize Ultrasound System Output

The AIUM Board of Governors believes that it is in the interest of the ultrasound community that acoustical output characteristics of Ultrasound Systems be well documented and openly available. This information is necessary for the prudent and informed clinical use of ultrasound. The Board strongly encourages manufacturers to provide this information.

Users of ultrasound systems who intend to report on bioeffects studies, and other studies that are highly dependent on acoustic output, are encouraged to seek either the assistance of specialists in acoustic output measurement or the manufacturers of their systems to ensure adequate hydrophone-based calibration and sufficiently accurate estimates or measurements of pertinent acoustic output parameters. Data necessary to characterize a system are described in “Guidelines for Journal of Ultrasound in Medicine Authors and Reviewers on Measurement and Reporting of Acoustic Output and Exposure”, J Ultrasound Med 200524:1171–1179, as well as ref. “Guidance on Reporting Ultrasound Exposure Conditions for Bioeffects Studies,” Ultrasound Med. Biol. 2011 37(2):177-183. Detailed information on the scan settings and the field location of interest need to be provided to those making the measurement. Users should be aware that neither the acoustic output display indices displayed on the device (TI and MI)nor the “worst-case” output data provided in manufacturers’ Users’ Manuals are sufficient to characterize the acoustic output of ultrasound systems under the specific conditions and settings selected by a user for a given study or examination.

Approved: 02/27/1991; Reapproved: 03/26/1997, 06/04/2003, 03/16/2008, 10/30/2016

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