On the use of block matching for the estimation of arterial wall motion

Golemati, S; Stoitsis, J; Nikita, KS

dc.contributor.author	Golemati, S	en
dc.contributor.author	Stoitsis, J	en
dc.contributor.author	Nikita, KS	en
dc.date.accessioned	2014-03-01T02:51:46Z
dc.date.available	2014-03-01T02:51:46Z
dc.date.issued	2008	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35639
dc.subject.other	Arterial wall	en
dc.subject.other	B-mode ultrasound images	en
dc.subject.other	Block Matching	en
dc.subject.other	Carotid artery	en
dc.subject.other	Geometric errors	en
dc.subject.other	Ultrasound image sequences	en
dc.subject.other	Ultrasound images	en
dc.subject.other	Ultrasound simulation	en
dc.subject.other	Acoustic waves	en
dc.subject.other	Bioinformatics	en
dc.subject.other	Estimation	en
dc.subject.other	Motion compensation	en
dc.subject.other	Ultrasonic applications	en
dc.subject.other	Ultrasonics	en
dc.subject.other	Weaving	en
dc.subject.other	Ultrasonic imaging	en
dc.title	On the use of block matching for the estimation of arterial wall motion	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1109/BIBE.2008.4696787	en
heal.identifier.secondary	http://dx.doi.org/10.1109/BIBE.2008.4696787	en
heal.identifier.secondary	4696787	en
heal.publicationDate	2008	en
heal.abstract	Motion of the carotid artery wall is important for the quantification of arterial elasticity and contractility and can be estimated from sequences of B-mode ultrasound images. In the relatively few studies on the subject, block matching has been used to estimate displacements of selected areas of the arterial wall and of the atheromatous plaque. In this paper, we attempted a small study on the use and performance of three variations of block matching, namely forward-, backward- and combination-block-matching, in terms of estimating arterial wall motion. Simulated ultrasound image sequences, generated using (a) FIELD-II, an ultrasound simulation package and (b) a mathematical model of arterial wall displacement, were used. The warping index, defined as the mean geometric error in pixels between the true and recovered deformation, was used to evaluate the performance of the block matching techniques. Reasonably high values were obtained for all three cases; specifically, the warping index was 1.879 for forward-, 0.984 for backward- and 1.122 for combined block matching. In conclusion, block matching techniques are appropriate for estimating arterial wall motion from sequences of ultrasound images; backward tracking may be the preferred technique in such applications.	en
heal.journalName	8th IEEE International Conference on BioInformatics and BioEngineering, BIBE 2008	en
dc.identifier.doi	10.1109/BIBE.2008.4696787	en