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An ultrasound mini-balance for measurement of therapy level ultrasound

Sutton, Yvonne; McBride, Karne and Pye, Stephen (2006). An ultrasound mini-balance for measurement of therapy level ultrasound. Physics in Medicine and Biology, 51(14) pp. 3397–3404.

DOI (Digital Object Identifier) Link: https://doi.org/10.1088/0031-9155/51/14/008
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Abstract

This paper describes a cost-effective method for measuring acoustic power using a radiation force balance. The device is based around a long established balance design with a gantry arrangement fitted with an absorbing target. The notion of this balance design is that it can easily be constructed from materials that would be readily available within a clinical or industrial environment. The mini-balance was calibrated using a transfer standard against an NPL Reference balance, so a comparison of the performance between the two systems could be assessed. The measurements were completed at 1 MHz and 3 MHz and over the acoustic power range of 1 W to 15 W. The results show the acoustic power measured on the mini-balance to be within 5% of the reference measurements made on the NPL Balance. A separate systematic uncertainty budget is also presented based on studies made on the balance and on similar systems. The overall expanded uncertainty was calculated to be within 14% at 1 W level, decreasing with increasing power level to 7.4% above 5 W.

Item Type: Journal Item
Copyright Holders: 2006 IoP Publishing Ltd
ISSN: 1361-6560
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 38930
Depositing User: Yvonne Sutton
Date Deposited: 06 Nov 2013 10:00
Last Modified: 07 Dec 2018 10:20
URI: http://oro.open.ac.uk/id/eprint/38930
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