Assessment of Myocardial Viability at Dobutamine Echocardiography by Deformation Analysis Using Tissue Velocity and Speckle-Tracking
- Bansal, Manish
- Jeffriess, Leanne
- Leano, Rodel
- Mundy, Julie
- Marwick, Thomas H.
DOIAbstract
ObjectivesComparison of myocardial tissue-velocity imaging (TVI) and speckle-tracking echocardiography (STE) for prediction of viability at dobutamine echocardiography (DbE).BackgroundUse of TVI-based strain imaging during DbE may facilitate the prediction of myocardial viability but has technical limitations. STE overcomes these but requires evaluation for prediction of viability.MethodsWe studied 55 patients with ischemic heart disease and left ventricular systolic dysfunction (left ventricular ejection fraction <0.45) who were undergoing DbE for assessment of myocardial viability and who subsequently underwent myocardial revascularization. TVI was used to measure longitudinal end-systolic strain (longS) and peak systolic strain rate (SR)...
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