Dynamic signal arrival correction for vibro-acoustography image formation

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

Abstract

This paper presents a method to form images from the acoustic emission measured during vibro-acoustography scans that accounts for acoustic propagation delay from the vibrating object to the hydrophone. We use the shapes of the wavefronts of the acoustic emission data to estimate correction angles and create a time delay image that allows us to adjust the location of the temporal window applied to the RF signal in a dynamic or adaptive fashion. The method correctly chooses the segment of the acoustic emission data to process so that the data are consistent from pixel-to-pixel despite finite differences in propagation time to the hydrophone. Image results are presented from a simulated computer phantom, a urethane breast phantom and in vivo breast data and show that image contrast and overall image quality is improved.

Original languageEnglish (US)
Title of host publicationProceedings - IEEE Ultrasonics Symposium
Pages26-29
Number of pages4
Volume1
DOIs
StatePublished - 2005
Event2005 IEEE Ultrasonics Symposium - Rotterdam, Netherlands
Duration: Sep 18 2005Sep 21 2005

Other

Other2005 IEEE Ultrasonics Symposium
CountryNetherlands
CityRotterdam
Period9/18/059/21/05

Fingerprint

Acoustic emissions
Hydrophones
Image processing
Pixels
Wavefronts
Image quality
Time delay
Acoustics

Keywords

  • Acoustic emission
  • Adaptive
  • Vibro-acoustography

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Dynamic signal arrival correction for vibro-acoustography image formation. / Urban, Matthew W; Greenleaf, James F.

Proceedings - IEEE Ultrasonics Symposium. Vol. 1 2005. p. 26-29 1602788.

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

Urban, MW & Greenleaf, JF 2005, Dynamic signal arrival correction for vibro-acoustography image formation. in Proceedings - IEEE Ultrasonics Symposium. vol. 1, 1602788, pp. 26-29, 2005 IEEE Ultrasonics Symposium, Rotterdam, Netherlands, 9/18/05. https://doi.org/10.1109/ULTSYM.2005.1602788
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