File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Preliminary Validation of Angle-Independent Myocardial Elastography Using MR Tagging in a Clinical Setting

TitlePreliminary Validation of Angle-Independent Myocardial Elastography Using MR Tagging in a Clinical Setting
Authors
Issue Date2008
PublisherElsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/ultrasmedbio
Citation
Ultrasound In Medicine And Biology, 2008, v. 34 n. 12, p. 1980-1997 How to Cite?
AbstractMyocardial elastography (ME), a radio-frequency (RF) based speckle tracking technique, was employed in order to image the entire two-dimensional (2D) transmural deformation field in full echocardiographic views and was validated against tagged magnetic resonance imaging (tMRI) in normal as well as reperfused (i.e., treated myocardial infarction [MI]) human left ventricles. RF ultrasound and tMRI frames were acquired at the papillary muscle level in 2D short-axis (SA) views at the frame rates of 136 (fps; real-time) and 33 fps (electrocardiogram [ECG]-gated), respectively. In ME, in-plane, 2D (lateral and axial) incremental displacements were iteratively estimated using one-dimensional (1D) cross-correlation and recorrelation techniques in a 2D search with a 1D matching kernel. In tMRI, cardiac motion was estimated by a template-matching algorithm on a 2D grid-shaped mesh. In both ME and tMRI, cumulative 2D displacements were obtained and then used to estimate 2D Lagrangian finite systolic strains, from which polar (i.e., radial and circumferential) strains, namely angle-independent measures, were further obtained through coordinate transformation. Principal strains, which are angle-independent and less centroid-dependent than polar strains, were also computed and imaged based on the 2D finite strains using methodology previously established. Both qualitatively and quantitatively, angle-independent ME is shown to be capable of (1) estimating myocardial deformation in good agreement with tMRI estimates in a clinical setting and of (2) differentiating abnormal from normal myocardium in a full left-ventricular view. The principal strains were concluded to be a potential diagnostic measure for detection of cardiac disease with reduced centroid dependence. (E-mail: ek2191@columbia.edu). © 2008 World Federation for Ultrasound in Medicine & Biology.
Persistent Identifierhttp://hdl.handle.net/10722/167058
ISSN
2015 Impact Factor: 2.298
2015 SCImago Journal Rankings: 0.885
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLee, WNen_US
dc.contributor.authorQian, Zen_US
dc.contributor.authorTosti, CLen_US
dc.contributor.authorBrown, TRen_US
dc.contributor.authorMetaxas, DNen_US
dc.contributor.authorKonofagou, EEen_US
dc.date.accessioned2012-09-28T04:02:25Z-
dc.date.available2012-09-28T04:02:25Z-
dc.date.issued2008en_US
dc.identifier.citationUltrasound In Medicine And Biology, 2008, v. 34 n. 12, p. 1980-1997en_US
dc.identifier.issn0301-5629en_US
dc.identifier.urihttp://hdl.handle.net/10722/167058-
dc.description.abstractMyocardial elastography (ME), a radio-frequency (RF) based speckle tracking technique, was employed in order to image the entire two-dimensional (2D) transmural deformation field in full echocardiographic views and was validated against tagged magnetic resonance imaging (tMRI) in normal as well as reperfused (i.e., treated myocardial infarction [MI]) human left ventricles. RF ultrasound and tMRI frames were acquired at the papillary muscle level in 2D short-axis (SA) views at the frame rates of 136 (fps; real-time) and 33 fps (electrocardiogram [ECG]-gated), respectively. In ME, in-plane, 2D (lateral and axial) incremental displacements were iteratively estimated using one-dimensional (1D) cross-correlation and recorrelation techniques in a 2D search with a 1D matching kernel. In tMRI, cardiac motion was estimated by a template-matching algorithm on a 2D grid-shaped mesh. In both ME and tMRI, cumulative 2D displacements were obtained and then used to estimate 2D Lagrangian finite systolic strains, from which polar (i.e., radial and circumferential) strains, namely angle-independent measures, were further obtained through coordinate transformation. Principal strains, which are angle-independent and less centroid-dependent than polar strains, were also computed and imaged based on the 2D finite strains using methodology previously established. Both qualitatively and quantitatively, angle-independent ME is shown to be capable of (1) estimating myocardial deformation in good agreement with tMRI estimates in a clinical setting and of (2) differentiating abnormal from normal myocardium in a full left-ventricular view. The principal strains were concluded to be a potential diagnostic measure for detection of cardiac disease with reduced centroid dependence. (E-mail: ek2191@columbia.edu). © 2008 World Federation for Ultrasound in Medicine & Biology.en_US
dc.languageengen_US
dc.publisherElsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/ultrasmedbioen_US
dc.relation.ispartofUltrasound in Medicine and Biologyen_US
dc.subject.meshAdulten_US
dc.subject.meshAgeden_US
dc.subject.meshDiastoleen_US
dc.subject.meshElasticity Imaging Techniques - Methodsen_US
dc.subject.meshFemaleen_US
dc.subject.meshHeart Ventricles - Ultrasonographyen_US
dc.subject.meshHumansen_US
dc.subject.meshImage Interpretation, Computer-Assisted - Methodsen_US
dc.subject.meshMagnetic Resonance Imaging - Methodsen_US
dc.subject.meshMaleen_US
dc.subject.meshMyocardial Infarction - Diagnosis - Ultrasonographyen_US
dc.subject.meshSystoleen_US
dc.subject.meshVentricular Function, Leften_US
dc.titlePreliminary Validation of Angle-Independent Myocardial Elastography Using MR Tagging in a Clinical Settingen_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.ultrasmedbio.2008.05.007en_US
dc.identifier.pmid18952364-
dc.identifier.scopuseid_2-s2.0-56249137277en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-56249137277&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume34en_US
dc.identifier.issue12en_US
dc.identifier.spage1980en_US
dc.identifier.epage1997en_US
dc.identifier.isiWOS:000261410900014-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridLee, WN=22634980600en_US
dc.identifier.scopusauthoridQian, Z=7201384454en_US
dc.identifier.scopusauthoridTosti, CL=10641524200en_US
dc.identifier.scopusauthoridBrown, TR=7404319370en_US
dc.identifier.scopusauthoridMetaxas, DN=7006359060en_US
dc.identifier.scopusauthoridKonofagou, EE=7005877325en_US

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats