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. 2022 Oct 12;13(11):5753–5774. doi: 10.1364/BOE.472643

Fig. 9.

Fig. 9.

π NIRS enables measuring the pulsatile blood flow in the human forearm in vivo at long source-collector separation and a short integration time of only 10 msec. (a) A diagram of the experiment. (b) The estimated blood flow index renders the pulsatility.