| 摘要 |
A method and system for monitoring performance of a heart includes forming a time series of frames of echocardiographic data. The time series may be for a systolic interval, but longer intervals are also possible. The frames of the time series have sets of corresponding data points with respect to specific sites of a patient's heart. For each set of corresponding data points, a time domain signal as a function of a selected scalar is determined, thereby yielding a time domain signal which varies with frame-to-frame variations of the selected scalar. The scalar has a physiological significance to the contractile state or the motion of the myocardium. Mean squared speed, root mean squared speed, mean squared rate of signal change, integrated backscatter, correlation area, and echocardiographic signal data magnitude are suitable scalars. For each time domain signal, a phase angle is obtained to assign a pixel value to an image data point. The pixel values are utilized to generate either a gray-scale two-dimensional image or a time series of cardiac performance.
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