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Assessment of the likely thermal index values for pulsed Doppler ultrasonic equipment - Stage 1: calculation based on manufacturers' data.

Shaw, A; Preston, R C; Bond, A D (1997) Assessment of the likely thermal index values for pulsed Doppler ultrasonic equipment - Stage 1: calculation based on manufacturers' data. NPL Report. CIRA(EXT)018

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Abstract

There is currently considerable international concern about the possible adverse effects on tissue due to the thermal effects of ultrasound. Although no-one has yet shown deleterious effects with current devices in patients, studies have shown that significant temperature rises can occur.
To address these concerns, the UK Department of Health has initiated a project to be carried out at NPL which aims to assess the likely thermal hazard from commercial pulsed Doppler diagnostic ultrasound equipment. The project is in three stages and will assess the thermal hazard by published prediction algorithms, by experimental methods and by improved theoretical methods.
This report covers Stage I, which uses published methods to calculate Thermal Indices from acoustic data supplied by manufacturers. Results are given for 11 different scanners from eight manufacturers. Eight prediction algorithms are used.

Item Type: Report/Guide (NPL Report)
NPL Report No.: CIRA(EXT)018
Subjects: Acoustics
Acoustics > Ultrasound
Last Modified: 02 Feb 2018 13:18
URI: http://eprintspublications.npl.co.uk/id/eprint/693

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