Carotid artery motion estimation from sequences of B-mode ultrasound images: Effect of dynamic range and persistence

Stoitsis, J; Golemati, S; Perakis, D; Alexandriai, A; Davos, C; Nikita, KS

dc.contributor.author	Stoitsis, J	en
dc.contributor.author	Golemati, S	en
dc.contributor.author	Perakis, D	en
dc.contributor.author	Alexandriai, A	en
dc.contributor.author	Davos, C	en
dc.contributor.author	Nikita, KS	en
dc.date.accessioned	2014-03-01T02:43:58Z
dc.date.available	2014-03-01T02:43:58Z
dc.date.issued	2006	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/31582
dc.subject	Block Matching	en
dc.subject	Carotid Artery	en
dc.subject	Correlation Coefficient	en
dc.subject	Dynamic Range	en
dc.subject	Image Sequence	en
dc.subject	Motion Analysis	en
dc.subject	Motion Estimation	en
dc.subject	Ultrasound	en
dc.subject	Ultrasound Imaging	en
dc.subject.other	Correlation methods	en
dc.subject.other	Image analysis	en
dc.subject.other	Reliability theory	en
dc.subject.other	Scanning	en
dc.subject.other	Ultrasonic imaging	en
dc.subject.other	Anatomical structures	en
dc.subject.other	Block matching	en
dc.subject.other	Image sequences	en
dc.subject.other	Motion analysis	en
dc.subject.other	Motion estimation	en
dc.title	Carotid artery motion estimation from sequences of B-mode ultrasound images: Effect of dynamic range and persistence	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1109/IST.2006.1650790	en
heal.identifier.secondary	http://dx.doi.org/10.1109/IST.2006.1650790	en
heal.identifier.secondary	1650790	en
heal.publicationDate	2006	en
heal.abstract	Motion of the carotid artery wall can be quantitatively estimated from sequences of B-mode ultrasound images. Ultrasound scanner settings, including dynamic range and persistence, can affect the appearance of anatomical structures, and consequently, the results of motion analysis. In this paper, the effects of dynamic range and persistence were studied, in an attempt to suggest optimal values for reliable motion analysis. Image sequences were recorded using four different values for dynamic range, namely 0, 48, 66 and 90 dB, and three different values for persistence, namely 0, 5.6 and 50. Radial and axial displacements as well as the correlation coefficients were estimated using block-matching from recordings of about 3 sec duration. The variances of radial and axial displacements were not significantly affected by changes in dynamic range and persistence. The mean value of the correlation coefficient, which is an index of the reliability of motion analysis, was also not significantly affected by these settings. However, an increase in persistence increased the delays between peak radial displacements and cardiac systole. It is suggested that high values of dynamic range (66 or 90 dB) and low values of persistence (0 or 5.6) are used for motion analysis based on block-matching. ©2006 IEEE.	en
heal.journalName	IST 2006 - Proceedings of the 2006 IEEE International Workshop on Imagining Systems and Techniques	en
dc.identifier.doi	10.1109/IST.2006.1650790	en
dc.identifier.volume	2006	en
dc.identifier.spage	131	en
dc.identifier.epage	136	en