Error analysis of axial displacement estimation in elasticity imaging

Sheng Wen Huang, Jonathan M. Rubin, Congxian Jia, Ragnar Olafsson, Russell S Witte, Matthew O'Donnell

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

Abstract

Correlation-based speckle tracking methods are commonly used in elasticity imaging to estimate displacements. In the presence of local strain, a larger window size (in cross correlation calculation) results in larger displacement error. To reduce tracking error, we proposed using a short window followed by a correlation coefficient filter. Although simulation and experimental results demonstrated the efficacy of the method, it is not clear why correlation filtering reduces tracking error. In this study, we addressed this issue and analyzed the relationship between displacement error and tracking parameters such as window size and filter size. For simplicity, we focused on axial displacement estimation. Analytic forms for tracking without and with correlation filtering were derived to predict tracking error. For the former case, the expression shows increase of error with resolution. For the latter case, there exists one extra negative term so that tracking error decreases with resolution. Furthermore, given a fixed resolution, a smaller window together with a larger filter is preferred. Simulations were performed and the results match the theory well for strains up to 4%.

Original languageEnglish (US)
Title of host publicationProceedings - IEEE Ultrasonics Symposium
Pages1969-1972
Number of pages4
DOIs
StatePublished - 2007
Event2007 IEEE Ultrasonics Symposium, IUS - New York, NY, United States
Duration: Oct 28 2007Oct 31 2007

Other

Other2007 IEEE Ultrasonics Symposium, IUS
CountryUnited States
CityNew York, NY
Period10/28/0710/31/07

Fingerprint

Error analysis
Elasticity
Imaging techniques
Speckle

Keywords

  • Correlation filtering
  • Displacement estimation
  • Elasticity imaging
  • Error analysis
  • Speckle tracking

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Huang, S. W., Rubin, J. M., Jia, C., Olafsson, R., Witte, R. S., & O'Donnell, M. (2007). Error analysis of axial displacement estimation in elasticity imaging. In Proceedings - IEEE Ultrasonics Symposium (pp. 1969-1972). [4410068] https://doi.org/10.1109/ULTSYM.2007.495

Error analysis of axial displacement estimation in elasticity imaging. / Huang, Sheng Wen; Rubin, Jonathan M.; Jia, Congxian; Olafsson, Ragnar; Witte, Russell S; O'Donnell, Matthew.

Proceedings - IEEE Ultrasonics Symposium. 2007. p. 1969-1972 4410068.

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

Huang, SW, Rubin, JM, Jia, C, Olafsson, R, Witte, RS & O'Donnell, M 2007, Error analysis of axial displacement estimation in elasticity imaging. in Proceedings - IEEE Ultrasonics Symposium., 4410068, pp. 1969-1972, 2007 IEEE Ultrasonics Symposium, IUS, New York, NY, United States, 10/28/07. https://doi.org/10.1109/ULTSYM.2007.495
Huang SW, Rubin JM, Jia C, Olafsson R, Witte RS, O'Donnell M. Error analysis of axial displacement estimation in elasticity imaging. In Proceedings - IEEE Ultrasonics Symposium. 2007. p. 1969-1972. 4410068 https://doi.org/10.1109/ULTSYM.2007.495
Huang, Sheng Wen ; Rubin, Jonathan M. ; Jia, Congxian ; Olafsson, Ragnar ; Witte, Russell S ; O'Donnell, Matthew. / Error analysis of axial displacement estimation in elasticity imaging. Proceedings - IEEE Ultrasonics Symposium. 2007. pp. 1969-1972
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