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Improved tracking performance of lagrangian block-matching methodologies using block expansion in the time domain: in silico, phantom and in vivo evaluations
Lunds universitet.
Högskolan Dalarna, Akademin Utbildning, hälsa och samhälle, Idrotts- och hälsovetenskap.ORCID-id: 0000-0002-1813-3616
Lunds universitet.
Lunds universitet.
2014 (engelsk)Inngår i: Ultrasound in Medicine and Biology, ISSN 0301-5629, E-ISSN 1879-291X, Vol. 40, nr 10, s. 2508-2520Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The aim of this study was to evaluate tracking performance when an extra reference block is added to a basic block-matching method, where the two reference blocks originate from two consecutive ultrasound frames. The use of an extra reference block was evaluated for two putative benefits: (i) an increase in tracking performance while maintaining the size of the reference blocks, evaluated using in silico and phantom cine loops; (ii) a reduction in the size of the reference blocks while maintaining the tracking performance, evaluated using in vivo cine loops of the common carotid artery where the longitudinal movement of the wall was estimated. The results indicated that tracking accuracy improved (mean - 48%, p<0.005 [in silico]; mean - 43%, p<0.01 [phantom]), and there was a reduction in size of the reference blocks while maintaining tracking performance (mean - 19%, p<0.01 [in vivo]). This novel method will facilitate further exploration of the longitudinal movement of the arterial wall. 

sted, utgiver, år, opplag, sider
Elsevier, 2014. Vol. 40, nr 10, s. 2508-2520
Emneord [en]
Ultrasound; Motion estimation; Longitudinal movement; Speckle tracking; Arterial wall movement
HSV kategori
Forskningsprogram
Hälsa och välfärd
Identifikatorer
URN: urn:nbn:se:du-15125DOI: 10.1016/j.ultrasmedbio.2014.05.010ISI: 000343144400020PubMedID: 25130445OAI: oai:DiVA.org:du-15125DiVA, id: diva2:742196
Tilgjengelig fra: 2014-09-01 Laget: 2014-09-01 Sist oppdatert: 2017-12-05bibliografisk kontrollert

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