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Conference Paper: An In-Vivo study of frame rate optimization for myocardial elastography

TitleAn In-Vivo study of frame rate optimization for myocardial elastography
Authors
KeywordsEcg Gating
Frame Rate
Myocardial Elastography
Snr
Strain
Trade-Off
Issue Date2007
Citation
Proceedings - Ieee Ultrasonics Symposium, 2007, p. 1933-1936 How to Cite?
AbstractIn this paper, the requirement and optimization of the frame rate for myocardial elastography was investigated in normal mice and humans in vivo. Using a retrospective electrocardiogram (ECG) gating technique, the highest frame rate was 8 kHz and 481 Hz, respectively. Axial displacement and strain of myocardium were estimated using an RF speckle tracking method consisting of a 1-D kernel in a 2-D search. The frame rate was then decimated to study its effects on the image quality of myocardial elastography, in terms of elastographic signal-to-noise (SNRe) and correlation coefficient. Trade-offs between SNRe and effective frame rate were identified in the murine case. The optimum range of frame rate was found to be between 2000 and 2700 Hz, or equivalently, 250-350 frames per cardiac cycle (fpc). In the human case, the image quality increased monotonously with the frame rate. A frame rate higher than 480 Hz (i.e., 350 fpc) was thus required for both systole and diastole. © 2007 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/167106
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorLuo, Jen_US
dc.contributor.authorLee, WNen_US
dc.contributor.authorWang, Sen_US
dc.contributor.authorKonofagou, EEen_US
dc.date.accessioned2012-09-28T04:04:12Z-
dc.date.available2012-09-28T04:04:12Z-
dc.date.issued2007en_US
dc.identifier.citationProceedings - Ieee Ultrasonics Symposium, 2007, p. 1933-1936en_US
dc.identifier.issn1051-0117en_US
dc.identifier.urihttp://hdl.handle.net/10722/167106-
dc.description.abstractIn this paper, the requirement and optimization of the frame rate for myocardial elastography was investigated in normal mice and humans in vivo. Using a retrospective electrocardiogram (ECG) gating technique, the highest frame rate was 8 kHz and 481 Hz, respectively. Axial displacement and strain of myocardium were estimated using an RF speckle tracking method consisting of a 1-D kernel in a 2-D search. The frame rate was then decimated to study its effects on the image quality of myocardial elastography, in terms of elastographic signal-to-noise (SNRe) and correlation coefficient. Trade-offs between SNRe and effective frame rate were identified in the murine case. The optimum range of frame rate was found to be between 2000 and 2700 Hz, or equivalently, 250-350 frames per cardiac cycle (fpc). In the human case, the image quality increased monotonously with the frame rate. A frame rate higher than 480 Hz (i.e., 350 fpc) was thus required for both systole and diastole. © 2007 IEEE.en_US
dc.languageengen_US
dc.relation.ispartofProceedings - IEEE Ultrasonics Symposiumen_US
dc.subjectEcg Gatingen_US
dc.subjectFrame Rateen_US
dc.subjectMyocardial Elastographyen_US
dc.subjectSnren_US
dc.subjectStrainen_US
dc.subjectTrade-Offen_US
dc.titleAn In-Vivo study of frame rate optimization for myocardial elastographyen_US
dc.typeConference_Paperen_US
dc.identifier.emailLee, WN: wnlee@hku.hken_US
dc.identifier.authorityLee, WN=rp01663en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1109/ULTSYM.2007.486en_US
dc.identifier.scopuseid_2-s2.0-43649089727en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-43649089727&selection=ref&src=s&origin=recordpageen_US
dc.identifier.spage1933en_US
dc.identifier.epage1936en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridLuo, J=7404182785en_US
dc.identifier.scopusauthoridLee, WN=22634980600en_US
dc.identifier.scopusauthoridWang, S=7410338987en_US
dc.identifier.scopusauthoridKonofagou, EE=7005877325en_US

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