Dereverberation of ultrasound echo data in vascular imaging applications

Emad S. Ebbini, Yayun Wan, Dalong Liu

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

1 Scopus citations

Abstract

Two-dimensional speckle tracking methods have shown great promise in imaging tissue motion and deformations in the vicinity of blood vessels offering the promise of new methods for detecting and staging of vascular disease. However, vessel wall echo reverberations overwhelm the echoes (scattering) from the blood and result in loss of flow information in large regions within the vessel. In this paper, we present a design approach for a time-varying dereverberation inverse filter for echo data within the vessel. The design approach is motivated by the fact that the reverberation pattern varies significantly with the pulsatory motion of the vessel wall. Minute changes in the location/orientation of the vessel wall with respect to the imaging beam result in measurable changes in the speckle-specular echo mixture at the vessel wall and the observed periodicities in the reverberation pattern within the vessel. Therefore, a time-varying inverse filter is necessary to remove the reverberation components appropriately during the heart cycle. A maximum likelihood approach for optimizing the inverse filter parameter is presented. The performance of the dereverberation algorithm is illustrated using pulse-echo data from realtime imaging of the carotid artery of a healthy volunteer.

Original languageEnglish (US)
Title of host publication2011 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2011 - Proceedings
Pages741-744
Number of pages4
DOIs
StatePublished - Aug 18 2011
Event36th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2011 - Prague, Czech Republic
Duration: May 22 2011May 27 2011

Publication series

NameICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
ISSN (Print)1520-6149

Other

Other36th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2011
Country/TerritoryCzech Republic
CityPrague
Period5/22/115/27/11

Keywords

  • 2D speckle tracking
  • Motion detection
  • inverse filtering
  • maximum likelihood
  • reverberation

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