Image formation in vibro-acoustography with sector array transducers

Glauber T. Silva, Alejandro C. Frery, Eliana Almeida, Shigao D Chen, Mostafa Fatemi, James F Greenleaf

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This paper presents the image formation process in vibro-acoustography for systems based on sector array transducers. These transducers are an alternative to annular concave transducers. They represent an innovative technique deserving detailed assessment in vibro-acoustography applications. The system point-spread function (PSF) is defined in terms of the acoustic emission of a point-target in response to the dynamic ultrasound radiation force. This force is produced by two overlapping ultrasound beams. We calculate the radiation force on the target in a nonviscous fluid using the plane wave approximation for the ultrasound beams. The beamforming of sector array transducers is analyzed through linear acoustics. An expression for the velocity potential produced by sector arrays is derived, and the vibro-acoustography PSF is evaluated numerically. An experimental setup is design to validate the theory; the comparison is made using location and amplitude of sidelobes and spatial resolution defined by the PSF. Results show that the computed PSF is in full agreement with the PSF obtained experimentally.

Original languageEnglish (US)
Title of host publicationBrazilian Symposium of Computer Graphic and Image Processing
EditorsA.A. Araujo, J.L.D. Comba, I. Navazo, A.A. Souza
Pages25-32
Number of pages8
DOIs
StatePublished - 2004
EventProceedings - XVII Brazilian Symposium on Computer Graphics and Image Processing, SIBGRAPI 2004. And II Ibero-American Symposium on Computer Graphics, SIACG 2004 - Curitiba, Brazil
Duration: Oct 17 2004Oct 20 2004

Other

OtherProceedings - XVII Brazilian Symposium on Computer Graphics and Image Processing, SIBGRAPI 2004. And II Ibero-American Symposium on Computer Graphics, SIACG 2004
CountryBrazil
CityCuritiba
Period10/17/0410/20/04

Fingerprint

Optical transfer function
Transducers
Image processing
Ultrasonics
Radiation
Beamforming
Acoustic emissions
Acoustics
Fluids

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Silva, G. T., Frery, A. C., Almeida, E., Chen, S. D., Fatemi, M., & Greenleaf, J. F. (2004). Image formation in vibro-acoustography with sector array transducers. In A. A. Araujo, J. L. D. Comba, I. Navazo, & A. A. Souza (Eds.), Brazilian Symposium of Computer Graphic and Image Processing (pp. 25-32) https://doi.org/10.1109/SIBGRA.2004.1352939

Image formation in vibro-acoustography with sector array transducers. / Silva, Glauber T.; Frery, Alejandro C.; Almeida, Eliana; Chen, Shigao D; Fatemi, Mostafa; Greenleaf, James F.

Brazilian Symposium of Computer Graphic and Image Processing. ed. / A.A. Araujo; J.L.D. Comba; I. Navazo; A.A. Souza. 2004. p. 25-32.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Silva, GT, Frery, AC, Almeida, E, Chen, SD, Fatemi, M & Greenleaf, JF 2004, Image formation in vibro-acoustography with sector array transducers. in AA Araujo, JLD Comba, I Navazo & AA Souza (eds), Brazilian Symposium of Computer Graphic and Image Processing. pp. 25-32, Proceedings - XVII Brazilian Symposium on Computer Graphics and Image Processing, SIBGRAPI 2004. And II Ibero-American Symposium on Computer Graphics, SIACG 2004, Curitiba, Brazil, 10/17/04. https://doi.org/10.1109/SIBGRA.2004.1352939
Silva GT, Frery AC, Almeida E, Chen SD, Fatemi M, Greenleaf JF. Image formation in vibro-acoustography with sector array transducers. In Araujo AA, Comba JLD, Navazo I, Souza AA, editors, Brazilian Symposium of Computer Graphic and Image Processing. 2004. p. 25-32 https://doi.org/10.1109/SIBGRA.2004.1352939
Silva, Glauber T. ; Frery, Alejandro C. ; Almeida, Eliana ; Chen, Shigao D ; Fatemi, Mostafa ; Greenleaf, James F. / Image formation in vibro-acoustography with sector array transducers. Brazilian Symposium of Computer Graphic and Image Processing. editor / A.A. Araujo ; J.L.D. Comba ; I. Navazo ; A.A. Souza. 2004. pp. 25-32
@inproceedings{4ab9d096be6d4f76a139ce3f3b8bc668,
title = "Image formation in vibro-acoustography with sector array transducers",
abstract = "This paper presents the image formation process in vibro-acoustography for systems based on sector array transducers. These transducers are an alternative to annular concave transducers. They represent an innovative technique deserving detailed assessment in vibro-acoustography applications. The system point-spread function (PSF) is defined in terms of the acoustic emission of a point-target in response to the dynamic ultrasound radiation force. This force is produced by two overlapping ultrasound beams. We calculate the radiation force on the target in a nonviscous fluid using the plane wave approximation for the ultrasound beams. The beamforming of sector array transducers is analyzed through linear acoustics. An expression for the velocity potential produced by sector arrays is derived, and the vibro-acoustography PSF is evaluated numerically. An experimental setup is design to validate the theory; the comparison is made using location and amplitude of sidelobes and spatial resolution defined by the PSF. Results show that the computed PSF is in full agreement with the PSF obtained experimentally.",
author = "Silva, {Glauber T.} and Frery, {Alejandro C.} and Eliana Almeida and Chen, {Shigao D} and Mostafa Fatemi and Greenleaf, {James F}",
year = "2004",
doi = "10.1109/SIBGRA.2004.1352939",
language = "English (US)",
isbn = "0769522270",
pages = "25--32",
editor = "A.A. Araujo and J.L.D. Comba and I. Navazo and A.A. Souza",
booktitle = "Brazilian Symposium of Computer Graphic and Image Processing",

}

TY - GEN

T1 - Image formation in vibro-acoustography with sector array transducers

AU - Silva, Glauber T.

AU - Frery, Alejandro C.

AU - Almeida, Eliana

AU - Chen, Shigao D

AU - Fatemi, Mostafa

AU - Greenleaf, James F

PY - 2004

Y1 - 2004

N2 - This paper presents the image formation process in vibro-acoustography for systems based on sector array transducers. These transducers are an alternative to annular concave transducers. They represent an innovative technique deserving detailed assessment in vibro-acoustography applications. The system point-spread function (PSF) is defined in terms of the acoustic emission of a point-target in response to the dynamic ultrasound radiation force. This force is produced by two overlapping ultrasound beams. We calculate the radiation force on the target in a nonviscous fluid using the plane wave approximation for the ultrasound beams. The beamforming of sector array transducers is analyzed through linear acoustics. An expression for the velocity potential produced by sector arrays is derived, and the vibro-acoustography PSF is evaluated numerically. An experimental setup is design to validate the theory; the comparison is made using location and amplitude of sidelobes and spatial resolution defined by the PSF. Results show that the computed PSF is in full agreement with the PSF obtained experimentally.

AB - This paper presents the image formation process in vibro-acoustography for systems based on sector array transducers. These transducers are an alternative to annular concave transducers. They represent an innovative technique deserving detailed assessment in vibro-acoustography applications. The system point-spread function (PSF) is defined in terms of the acoustic emission of a point-target in response to the dynamic ultrasound radiation force. This force is produced by two overlapping ultrasound beams. We calculate the radiation force on the target in a nonviscous fluid using the plane wave approximation for the ultrasound beams. The beamforming of sector array transducers is analyzed through linear acoustics. An expression for the velocity potential produced by sector arrays is derived, and the vibro-acoustography PSF is evaluated numerically. An experimental setup is design to validate the theory; the comparison is made using location and amplitude of sidelobes and spatial resolution defined by the PSF. Results show that the computed PSF is in full agreement with the PSF obtained experimentally.

UR - http://www.scopus.com/inward/record.url?scp=16244420680&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=16244420680&partnerID=8YFLogxK

U2 - 10.1109/SIBGRA.2004.1352939

DO - 10.1109/SIBGRA.2004.1352939

M3 - Conference contribution

SN - 0769522270

SP - 25

EP - 32

BT - Brazilian Symposium of Computer Graphic and Image Processing

A2 - Araujo, A.A.

A2 - Comba, J.L.D.

A2 - Navazo, I.

A2 - Souza, A.A.

ER -