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. 2016 Jul 12;7(8):3007–3020. doi: 10.1364/BOE.7.003007

Fig. 3.

Fig. 3

Example of measured radial pressure wave versus simultaneously recorded PPG wave (a) A clinical abnormal PPG waveform (b) Correlation between BP and abnormal PPG waveform (c) A clinical good PPG waveform (d) Correlation between BP and good PPG waveform.