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. Author manuscript; available in PMC: 2017 Oct 1.
Published in final edited form as: J Magn Reson Imaging. 2016 Apr 4;44(4):929–939. doi: 10.1002/jmri.25247

FIGURE 3.

FIGURE 3

(A) Temporally resolved (light red) and averaged over ~3 cardiac cycles (dark red) blood flow velocity in the popliteal artery in a representative subject. Baseline VENC was 80 cm/s and was raised to 120 cm/s at ~150 seconds into the experiment to account for the higher flow velocities during hyperemia. (B) Temporally resolved velocity from the baseline period in (A) shows the typical and expected triphasic waveform. (C) During reactive hyperemia, the blood flow is entirely antegrade, with forward flow throughout the cardiac cycle.