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Proceedings Paper

Acoustic intensity simulations for regulatory compliance
Author(s): Chris M. W. Daft; William M. Leue; Kai Erik Thomenius; Lars A. Odegaard; Michael C. MacDonald; Alan S. Meyers
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Paper Abstract

Ensuring that an ultrasound imager complies with all aspects of the FDA 510(k) regulations is a complex task, because there are hundreds of thousands of discrete operating conditions available to the sonographer. Accurate measurements require `peaking' of the hydrophone in azimuth and elevation, and acquiring data as a function of range. Thus it is necessary to characterize the acoustic field in 3 dimensions. It is simply impossible to measure the imager's output under each condition, so algorithmic means are needed to reduce the dimensionality of the problem. Even when simple linear dependencies (such as pulse repetition frequency) are taken into account, the time to obtain Thermal and Mechanical Indices for a new probe is formidable. We must also repeat the experiment each time changes are made to the transmitter hardware, or its waveforms. In this paper, we explore how to speed the acquisition of data used for estimation of the output labeling parameters by guiding the water-tank measurements with a beam simulator.

Paper Details

Date Published: 21 June 1999
PDF: 9 pages
Proc. SPIE 3664, Medical Imaging 1999: Ultrasonic Transducer Engineering, (21 June 1999); doi: 10.1117/12.350677
Show Author Affiliations
Chris M. W. Daft, General Electric Corp. (United States)
William M. Leue, General Electric Corp. (United States)
Kai Erik Thomenius, General Electric Corp. (United States)
Lars A. Odegaard, General Vingmed Ultrasound (Norway)
Michael C. MacDonald, General Electric Medical Systems (United States)
Alan S. Meyers, General Electric Medical Systems (United States)

Published in SPIE Proceedings Vol. 3664:
Medical Imaging 1999: Ultrasonic Transducer Engineering
K. Kirk Shung, Editor(s)

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