A high performance spatio-temporal displacement smoothing method for myocardial strain imaging

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

Abstract

Accurately assessing local myocardial strain is important for diagnosing ischemic heart diseases because decreased myocardial motion often appears in the early stage. The abnormal contraction motion can be visualized by myocardial strain images, but the strain calculation is very sensitive to noise. In our previous research, we proposed an adaptive dynamic grid interpolation (ADGI) method for overcoming the limitation of the trade-off between spatial resolution and accuracy in traditional moving-average filters. Usually, when the scanning frame-rate is high the correlation coefficient, which is calculated from ECAM, will be high. But only using two consecutive frames' phase-shift data, the displacements' dynamic range is low. Therefore, the strain calculation will be affected by the noise. In this research, we extend the proposed method with the ability to process two or more frames' data for improving the SNR of myocardial strain imaging. From the simulation results, we can conclude that our method can provide more accurate myocardial strain images. In a model with the infarcted region located around 1 to 3 o'clock, the RMS error is decreased to 16.8% without degrading spatial resolution.

Original languageEnglish
Title of host publication2009 IEEE International Ultrasonics Symposium and Short Courses, IUS 2009
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1415-1418
Number of pages4
ISBN (Print)9781424443895
DOIs
Publication statusPublished - 2009
Externally publishedYes
Event2009 IEEE International Ultrasonics Symposium, IUS 2009 - Rome, Italy
Duration: 2009 Sep 202009 Sep 23

Publication series

NameProceedings - IEEE Ultrasonics Symposium
ISSN (Print)1051-0117

Conference

Conference2009 IEEE International Ultrasonics Symposium, IUS 2009
Country/TerritoryItaly
CityRome
Period09/9/2009/9/23

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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