【摘 要】
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Background, Motivation and Objective Myocardial elastography has been shown capable of estimating and imaging radial and circumferential strains for the detection and localization of abnormal myocardi
【机 构】
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Department of Biomedical Engineering, Columbia University, New York, New York, USA
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Background, Motivation and Objective Myocardial elastography has been shown capable of estimating and imaging radial and circumferential strains for the detection and localization of abnormal myocardial contraction resulting from ischemia and/or arrhythmia. Estimation in the transverse (lateral) direction is inherently hindered by the lack of usable phase information that exists between reconstructed radiofrequency (RF) signals. Diverging beam transmissions have been developed to increase frame-rate and decrease frame-to-frame decorrelation at the cost of spatial resolution. Recently, coherent compounding has been proposed as a technique to increase the spatial resolution of diverging beam sequences with only a moderate tradeoff in frame-rate. To date, there has been no investigation that has studied the effect of compounding on two-dimensional cardiac strain estimation in vivo.
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