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Accuracy of peak detection is very important for autonomic evaluation based on photoplethysmographic (PPG) signals. Considering percussion peaks may not the maximum points in their PPG periods, the study proposed an improved algorithm of peak detection. It first determines the reference points at the rising edge of PPG percussion waves and then applies the local maximum only in the certain ranges...
Photoplethysmographic (PPG) signals have been considered as a promising approach to obtain heart rate variability (HRV). In the study, we used RR intervals (RRI) of electrocardiograph (ECG) as a standard to compare the accuracy of valley-to-valley intervals (VVI) and peak-to-peak intervals (PPI) from PPG for HRV analysis in the sitting position. The PPG and the ECG signals were recorded simultaneously...
Nanomedicine is the medical diagnosis, monitoring and applying treatment at the level of single molecules or molecular assemblies that provide structure, control, signals, homeostasis, and motility in living cells. Quantum dots (QDs) are nanometer-sized fluorescent probes suitable for advanced biological imaging. The nanotechnology will be very useful for the drug delivery and diagnostic approach...
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