Measurement of the transverse strain tensor in the coronary arterial wall from clinical intravascular ultrasound images.

Published

Journal Article

Atherosclerotic plaque rupture is the major cause of acute coronary syndromes. Currently, there is no reliable diagnostic tool to predict plaque rupture. Knowledge of plaque mechanical properties based on local artery wall strain measurements would be useful for characterizing its composition and predicting its vulnerability. Due to cardiac motion, strain estimation in clinical intravascular ultrasound (IVUS) images is extremely challenging. A method is presented to estimate cross-sectional coronary artery wall strain in response to cardiac pulsatile pressure using clinically acquired IVUS images, which are acquired in continuous pullback mode. First, cardiac phase information is retrieved retrospectively from an IVUS image sequence using an image-based gating method, and image sub-sequences at systole and diastole are extracted. Then, images at branch sites are used as landmarks to align the two image sub-sequences. Finally, the paired images at each site are registered to measure the 2D strain tensor of the coronary artery cross-section. This method has been successfully applied to IVUS images of a left anterior descending (LAD) coronary artery acquired clinically during a standard procedure. Such complete strain information should be useful for identifying vulnerable plaque.

Full Text

Duke Authors

Cited Authors

  • Liang, Y; Zhu, H; Gehrig, T; Friedman, MH

Published Date

  • October 20, 2008

Published In

Volume / Issue

  • 41 / 14

Start / End Page

  • 2906 - 2911

PubMed ID

  • 18804766

Pubmed Central ID

  • 18804766

International Standard Serial Number (ISSN)

  • 0021-9290

Digital Object Identifier (DOI)

  • 10.1016/j.jbiomech.2008.08.004

Language

  • eng

Conference Location

  • United States