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Article: Angle-independent and multi-dimensional myocardial elastography - From theory to clinical validation

TitleAngle-independent and multi-dimensional myocardial elastography - From theory to clinical validation
Authors
Issue Date2008
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/ultrason
Citation
Ultrasonics, 2008, v. 48 n. 6-7, p. 563-567 How to Cite?
AbstractThe angle-independent myocardial elastography, which shows good performance in our proposed theoretical framework using a three-dimensional, ultrasonic image formation model based on well-established, 3D finite-element, canine, left-ventricular models in both normal and left-circumflex ischemic cases, is employed as well as validated in vivo to assess the contractility of normal and pathological myocardia. Angle-independent myocardial elastography consists of: (1) iterative estimation of in-plane and out-of-plane cumulative displacements during systole using 1D cross-correlation and recorrelation techniques in a 2D search; (2) calculation of in-plane finite strains from the in-plane cumulative motion; and (3) computation of in-plane principal strains from the finite strains by eigen decomposition with a classification strategy. The in vivo raw data of healthy and pathological human left ventricles were acquired at 136 fps in a short-axis echocardiographic view. Similar to theory, the elastographic estimates in normal clinical cases showed radial wall thickening and circumferential shortening during systole through principal strain imaging, while those in a pathological case underwent opposite strains. The feasibility of angle-independent myocardial elastography with an automated contour tracking method was hereby demonstrated through imaging of the myocardial deformation, and principal strains were proven essential in the reliable characterization and differentiation of abnormal from normal myocardia, without any angular dependence. © 2008 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/167057
ISSN
2015 Impact Factor: 1.954
2015 SCImago Journal Rankings: 0.777
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLee, WNen_US
dc.contributor.authorKonofagou, EEen_US
dc.date.accessioned2012-09-28T04:02:24Z-
dc.date.available2012-09-28T04:02:24Z-
dc.date.issued2008en_US
dc.identifier.citationUltrasonics, 2008, v. 48 n. 6-7, p. 563-567en_US
dc.identifier.issn0041-624Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/167057-
dc.description.abstractThe angle-independent myocardial elastography, which shows good performance in our proposed theoretical framework using a three-dimensional, ultrasonic image formation model based on well-established, 3D finite-element, canine, left-ventricular models in both normal and left-circumflex ischemic cases, is employed as well as validated in vivo to assess the contractility of normal and pathological myocardia. Angle-independent myocardial elastography consists of: (1) iterative estimation of in-plane and out-of-plane cumulative displacements during systole using 1D cross-correlation and recorrelation techniques in a 2D search; (2) calculation of in-plane finite strains from the in-plane cumulative motion; and (3) computation of in-plane principal strains from the finite strains by eigen decomposition with a classification strategy. The in vivo raw data of healthy and pathological human left ventricles were acquired at 136 fps in a short-axis echocardiographic view. Similar to theory, the elastographic estimates in normal clinical cases showed radial wall thickening and circumferential shortening during systole through principal strain imaging, while those in a pathological case underwent opposite strains. The feasibility of angle-independent myocardial elastography with an automated contour tracking method was hereby demonstrated through imaging of the myocardial deformation, and principal strains were proven essential in the reliable characterization and differentiation of abnormal from normal myocardia, without any angular dependence. © 2008 Elsevier B.V. All rights reserved.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/ultrasonen_US
dc.relation.ispartofUltrasonicsen_US
dc.subject.meshEchocardiography, Three-Dimensional - Methodsen_US
dc.subject.meshElasticityen_US
dc.subject.meshElasticity Imaging Techniques - Methodsen_US
dc.subject.meshFinite Element Analysisen_US
dc.subject.meshHumansen_US
dc.subject.meshImage Interpretation, Computer-Assisted - Methodsen_US
dc.subject.meshModels, Cardiovascularen_US
dc.subject.meshMyocardial Ischemia - Ultrasonographyen_US
dc.subject.meshStress, Mechanicalen_US
dc.titleAngle-independent and multi-dimensional myocardial elastography - From theory to clinical validationen_US
dc.typeArticleen_US
dc.identifier.emailLee, WN: wnlee@hku.hken_US
dc.identifier.authorityLee, WN=rp01663en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.ultras.2008.07.005en_US
dc.identifier.pmid18757071-
dc.identifier.scopuseid_2-s2.0-55249095985en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-55249095985&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume48en_US
dc.identifier.issue6-7en_US
dc.identifier.spage563en_US
dc.identifier.epage567en_US
dc.identifier.isiWOS:000260739300016-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridLee, WN=22634980600en_US
dc.identifier.scopusauthoridKonofagou, EE=7005877325en_US

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