Carotid artery motion estimation from sequences of b-mode ultrasound images: Effect of scanner settings and image normalization

Golemati, S; Stoitsis, JS; Perakis, DA; Varela, E; Alexandridi, A; Davos, CH; Nikita, KS

dc.contributor.author	Golemati, S	en
dc.contributor.author	Stoitsis, JS	en
dc.contributor.author	Perakis, DA	en
dc.contributor.author	Varela, E	en
dc.contributor.author	Alexandridi, A	en
dc.contributor.author	Davos, CH	en
dc.contributor.author	Nikita, KS	en
dc.date.accessioned	2014-03-01T02:45:59Z
dc.date.available	2014-03-01T02:45:59Z
dc.date.issued	2009	en
dc.identifier.issn	0018-9456	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/32505
dc.subject	Block matching	en
dc.subject	Carotid artery	en
dc.subject	Dynamic range (DR)	en
dc.subject	Motion analysis	en
dc.subject	Normalization	en
dc.subject	Persistence	en
dc.subject	Ultrasound imaging	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Instruments & Instrumentation	en
dc.subject.other	Block matching	en
dc.subject.other	Carotid artery	en
dc.subject.other	Dynamic range (DR)	en
dc.subject.other	Motion analysis	en
dc.subject.other	Normalization	en
dc.subject.other	Persistence	en
dc.subject.other	Ultrasound imaging	en
dc.subject.other	Acoustic waves	en
dc.subject.other	Motion compensation	en
dc.subject.other	Motion estimation	en
dc.subject.other	Reliability analysis	en
dc.subject.other	Ultrasonics	en
dc.subject.other	Ultrasonic imaging	en
dc.title	Carotid artery motion estimation from sequences of b-mode ultrasound images: Effect of scanner settings and image normalization	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1109/TIM.2009.2015536	en
heal.identifier.secondary	http://dx.doi.org/10.1109/TIM.2009.2015536	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	The motion of the carotid artery wall can quantitatively be estimated from sequences of B-mode ultrasound images. In this paper, the effects of dynamic range (DR) and persistence, along with that of image normalization, were studied, in an attempt to suggest optimal values for reliable motion analysis. Image sequences were recorded using four different values for DR, i.e., 0, 48, 66, and 90 dB, and three different values for persistence, i.e., 0, 5.6, and 50. Radial and axial displacements, as well as the correlation coefficients (CCs), were estimated using block matching from recordings with durations of about 3 s. The variances of radial and axial displacements were not significantly affected by changes in DR and persistence. The mean value of the CC, 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. Image normalization did not affect the results of motion analysis. It is suggested that high values of DR (66 or 90 dB) and low values of persistence (0 or 5.6) are used for motion analysis based on block matching. © 2009 IEEE.	en
heal.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
heal.journalName	IEEE Transactions on Instrumentation and Measurement	en
dc.identifier.doi	10.1109/TIM.2009.2015536	en
dc.identifier.isi	ISI:000267064300008	en
dc.identifier.volume	58	en
dc.identifier.issue	7	en
dc.identifier.spage	2102	en
dc.identifier.epage	2112	en