KMID : 0372919840050010005
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Journal of Biomedical Engineering Research 1984 Volume.5 No. 1 p.5 ~ p.8
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Basic Aspects of Signal Processing in Ultrasonic Imaging
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Masao Saito
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Abstract
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As the ensemble averaged dz/dt signal during exercise gets smoothed, it is difficult to find the distinctive marks for estimation of stroke volume. The cross correlation function was made use of estmating these marks for automatic calculation by computer from the ensemble averaged dz/dt signal. LVET(Left Ventricular Ejection Time) and stroke volume were estimated based on the calculated parameters from the characteristic points. LVET, stroke volume calculated by hand, by the ensemble average and the cross correlation were compared for accuracy validation.
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