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This document summarizes a study that compared methods of measuring left ventricular ejection time (LVET) from echocardiography, impedance cardiography (ICG), and photoplethysmography (PPG). The study found that Doppler echocardiography had the lowest measurement variability across subjects, while ICG had the highest. LVET measured from echocardiographic images was shorter than from ICG and PPG. In conclusion, physiological signals like ICG and PPG provide longer LVET values and have greater variability tha
- Author
- nanda
- Language
- EN