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A numerical comparison of nonlinear indicators for diagnostic ultrasound fields

A numerical comparison of nonlinear indicators for diagnostic ultrasound fields
A numerical comparison of nonlinear indicators for diagnostic ultrasound fields
Nine measures of nonlinear propagation have been evaluated according to how they describe the transfer of energy from a diagnostic ultrasound beam's fundamental frequency to higher harmonics. Fields produced by 30 transducer configurations and four scanner models were simulated in water using a finite difference model. Nine parameters proposed in the literature to indicate the degree of nonlinear distortion were calculated from measurements on the modelled fields. The most robust indicators were the nonlinear propagation parameter sigma m, the spectral index, and two simple local distortion parameters incorporating the measured pressure, the distance from the source, and the local transducer gain.
85-88
World Congress on Ultrasonics
Duncan, T.
81b20f9c-c1fc-435d-b2f7-b1c99cdfb4f5
Humphrey, V.F.
23c9bd0c-7870-428f-b0dd-5ff158d22590
Duck, F.
78d194a5-ce10-4f10-8982-c6ab04251979
Duncan, T.
81b20f9c-c1fc-435d-b2f7-b1c99cdfb4f5
Humphrey, V.F.
23c9bd0c-7870-428f-b0dd-5ff158d22590
Duck, F.
78d194a5-ce10-4f10-8982-c6ab04251979

Duncan, T., Humphrey, V.F. and Duck, F. (2003) A numerical comparison of nonlinear indicators for diagnostic ultrasound fields. In Proceedings of the World Congress on Ultrasonics 2003. World Congress on Ultrasonics. pp. 85-88 .

Record type: Conference or Workshop Item (Paper)

Abstract

Nine measures of nonlinear propagation have been evaluated according to how they describe the transfer of energy from a diagnostic ultrasound beam's fundamental frequency to higher harmonics. Fields produced by 30 transducer configurations and four scanner models were simulated in water using a finite difference model. Nine parameters proposed in the literature to indicate the degree of nonlinear distortion were calculated from measurements on the modelled fields. The most robust indicators were the nonlinear propagation parameter sigma m, the spectral index, and two simple local distortion parameters incorporating the measured pressure, the distance from the source, and the local transducer gain.

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More information

Published date: 2003
Venue - Dates: Proceedings of the World Congress on Ultrasonics 2003, 2003-09-07 - 2003-09-10

Identifiers

Local EPrints ID: 10344
URI: https://eprints.soton.ac.uk/id/eprint/10344
PURE UUID: 74092843-ebb5-42c5-985c-b5e7a6e81bd6
ORCID for V.F. Humphrey: ORCID iD orcid.org/0000-0002-3580-5373

Catalogue record

Date deposited: 12 May 2005
Last modified: 06 Jun 2018 12:45

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