Efficient Two-Pass 3-D Speckle Tracking for Ultrasound Imaging

Geng Shi Jeng, Maria Zontak, Nripesh Parajuli, Allen Lu, Kevinminh Ta, Albert J. Sinusas, James S. Duncan, Matthew O'Donnell*

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Speckle tracking based on block matching is the most common method for multi-dimensional motion estimation in ultrasound elasticity imaging. Extension of 2-D methods to 3-D has been problematic because of the large computational load of 3-D tracking, as well as performance issues related to the low frame (volume) rates of 3-D images. To address both of these problems, we have developed an efficient two-pass tracking method suited to cardiac elasticity imaging. PatchMatch, originally developed for image editing, has been adapted for ultrasound to provide first-pass displacement estimates. Second-pass estimation uses conventional block matching within a much smaller search region. 3-D displacements are then obtained using correlation filtering previously shown to be effective against speckle decorrelation. Both simulated and in vivo canine cardiac results demonstrate that the proposed two-pass method reduces computational cost compared with conventional 3-D exhaustive search by a factor of 10. Moreover, it outperforms one-pass tracking by a factor of about 3 in terms of root-mean-square error relative to available ground-truth displacements.

Original languageEnglish
Pages (from-to)17415-17428
Number of pages14
JournalIEEE Access
Volume6
DOIs
StatePublished - 12 Mar 2018

Keywords

  • 3-D speckle tracking
  • correlation filter
  • multi-pass tracking
  • PatchMatch
  • speckle decorrelation
  • strain imaging
  • ultrasound elasticity imaging
  • ultrasound imaging

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    Jeng, G. S., Zontak, M., Parajuli, N., Lu, A., Ta, K., Sinusas, A. J., Duncan, J. S., & O'Donnell, M. (2018). Efficient Two-Pass 3-D Speckle Tracking for Ultrasound Imaging. IEEE Access, 6, 17415-17428. https://doi.org/10.1109/ACCESS.2018.2815522