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
2003
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.
.
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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Published date: 2003
Venue - Dates:
Proceedings of the World Congress on Ultrasonics 2003, Paris, France, 2003-09-06 - 2003-09-09
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Local EPrints ID: 10344
URI: http://eprints.soton.ac.uk/id/eprint/10344
PURE UUID: 74092843-ebb5-42c5-985c-b5e7a6e81bd6
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Date deposited: 12 May 2005
Last modified: 12 Dec 2021 03:24
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Author:
T. Duncan
Author:
F. Duck
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