By Topic

Ultrasound-image-based displacement and strain maps of the human carotid artery using weighted-least-squares optical flow

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Apostolakis, I.Z. ; Sch. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Athens, Greece ; Gastounioti, A. ; Golemati, S. ; Nikita, K.S.

The mechanical displacements of the carotid artery wall during the cardiac cycle can be estimated using appropriate motion analysis methods. The waveforms resulting from such estimations can subsequently be used to quantify the elastic properties of arterial tissue. In this study weighted-least-squares optical flow (WLSOF) was used to produce radial and longitudinal displacement maps of extended segments of healthy and diseased arterial walls from B-mode ultrasound. Strain maps of the same segments were produced by compensating for the translational movement of the carotid artery walls and subsequently assessing the strain tensor by solving a nonlinear minimization problem with a modified version of the WLSOF algorithm. Displacement maps accurately estimated the motion of the healthy carotid artery and also revealed information about the motion of the soft tissues of the carotid artery which would otherwise be difficult to distinguish. Strain maps in the case of healthy carotid artery showed good reproducibility between different cardiac cycles, while in the case of atherosclerotic subjects additional validation is needed.

Published in:

Imaging Systems and Techniques (IST), 2012 IEEE International Conference on

Date of Conference:

16-17 July 2012