Strain Rate Distribution in Layered Myocardium Measured Using Local Velocity Estimator with Multifrequency Phase Differences.
Measurement of the myocardial strain rate (SR), with high spatial resolution, is useful in evaluation of the transmurality of myocardial infarction. As the SR distribution is calculated using velocities observed at multiple positions in the heart wall, it is necessary to estimate the local velocity...
| Publicado en: | Ultrasound in Medicine & Biology Vol. 47; no. 9; pp. 2768 - 2774 |
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| Autores principales: | , , , |
| Formato: | research Journal Article |
| Publicado: |
Elsevier B.V.
Sep2021
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=151779702&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 151779702 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 03015629 JJ6 jtl: Ultrasound in Medicine & Biology issn: 03015629 maglogo: N pubinfo: dt: Sep2021 vid: 47 iid: 9 pid: 467 pub: Elsevier B.V. place: New York, New York artinfo: ui: 151779702 151779702 NLM34217561 151779702 10.1016/j.ultrasmedbio.2021.05.021 NLM34217561 151779702 ppf: 2768 ppct: 6 formats: tig: atl: Strain Rate Distribution in Layered Myocardium Measured Using Local Velocity Estimator with Multifrequency Phase Differences. aug: au: Obara, Yu Mori, Shohei Arakawa, Mototaka Kanai, Hiroshi affil: Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan sug: subj: Myocardial Contraction Myocardial Infarction Human Heart Reproducibility of Results Myocardium Comparative Studies Multicenter Studies Evaluation Research Validation Studies ab: Measurement of the myocardial strain rate (SR), with high spatial resolution, is useful in evaluation of the transmurality of myocardial infarction. As the SR distribution is calculated using velocities observed at multiple positions in the heart wall, it is necessary to estimate the local velocity to measure SR distribution. In the present study, our previously proposed local velocity estimator, with multifrequency phase differences, was used to measure SR distribution in the heart wall. The SR distribution measured with the proposed local velocity estimator revealed alternate layers of contraction and relaxation, which were not measured with the conventional velocity estimator with spatial averaging. The reproducibility of the SR distributions was confirmed in three consecutive heartbeats with three subjects. High-spatial-resolution SR measurement with the proposed local velocity estimator will allow myocardial layer-specific analysis in the transmural direction. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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