Scattering by single physically large and weak scatterers in the beam of a single-element transducer

The Journal of the Acoustical Society of America
Jeremy P KemmererMiklós Gyöngy

Abstract

Quantitative ultrasound techniques are generally applied to characterize media whose scattering sites are considered to be small compared to a wavelength. In this study, the backscattered response of single weakly scattering spheres and cylinders with diameters comparable to the beam width of a 2.25 MHz single-element transducer were simulated and measured in the transducer focal plane to investigate the impact of physically large scatterers. The responses from large single spherical scatterers at the focus were found to closely match the plane-wave response. The responses from large cylindrical scatterers at the focus were found to differ from the plane-wave response by a factor of f(-1). Normalized spectra from simulations and measurements were in close agreement: the fall-off of the responses as a function of lateral position agreed to within 2 dB for spherical scatterers and to within 3.5 dB for cylindrical scatterers. In both measurement and simulation, single scatterer diameter estimates were biased by less than 3% for a more highly focused transducer compared to estimates for a more weakly focused transducer. The results suggest that quantitative ultrasound techniques may produce physically meaningful size estimates for ...Continue Reading

References

Jan 1, 1991·The Journal of the Acoustical Society of America·J A Jensen
Jan 1, 1990·The Journal of the Acoustical Society of America·M F InsanaT J Hall
Jan 1, 1996·Ultrasonic Imaging·C W Manry, S L Broschat
Sep 1, 1996·Medical & Biological Engineering & Computing·K G Boone, D S Holder
Aug 1, 1997·The Journal of the Acoustical Society of America·T D MastR C Waag
Jul 4, 2003·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Roger J ZempMichael F Insana
Feb 12, 2005·The Journal of the Acoustical Society of America·Jonathan MamouJames F Zachary
Nov 11, 2006·Ultrasonic Imaging·Michael L Oelze, William D O'Brien
Feb 6, 2008·The Journal of the Acoustical Society of America·Jonathan MamouJames F Zachary
Jan 1, 1992·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·J A Jensen, N B Svendsen
Dec 3, 2008·The Journal of the Acoustical Society of America·Philip L Marston
Mar 12, 2009·The Journal of the Acoustical Society of America·Timothy E DoyleBrent L Carruth
Mar 12, 2009·Clinical Cancer Research : an Official Journal of the American Association for Cancer Research·Roxana M VladGregory J Czarnota
Apr 10, 2009·The Journal of the Acoustical Society of America·Jean Martial MariChristian Cachard
May 29, 2009·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Farid G Mitri
Dec 2, 2010·The Journal of the Acoustical Society of America·Andrew J HesfordRobert C Waag
Feb 15, 2011·Ultrasound in Medicine & Biology·Jonathan MamouErnest J Feleppa
Aug 18, 2012·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Farid G Mitri
Oct 16, 2012·Ultrasound in Medicine & Biology·Jeremy P Kemmerer, Michael L Oelze
Oct 16, 2012·Ultrasound in Medicine & Biology·Goutam GhoshalMichael L Oelze
Nov 13, 2012·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Farid G Mitri
Aug 10, 2013·The Journal of the Acoustical Society of America·Jeremy P KemmererMichael L Oelze
Aug 21, 2013·Ultrasound in Medicine & Biology·Miklós GyöngyImre Kalló

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Citations

Jun 13, 2015·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Miklós Gyöngy, Ákos Makra

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