Fig. 4: Local blood flow field reconstructed with E-uPIV and traditional ultrasound particle image velocimetry (uPIV) with 4-second acquisition time. | Communications Engineering

Fig. 4: Local blood flow field reconstructed with E-uPIV and traditional ultrasound particle image velocimetry (uPIV) with 4-second acquisition time.

From: Enhanced ultrasound particle image velocimetry (E-uPIV) enables fast flow mapping of microvasculature

Fig. 4

The flow velocity of mouse brain vessels, measured by E-uPIV and uPIV, is shown in c and a, respectively. The red/yellow color in a and c indicate upward flow directions, while the blue/cyan color indicate downward flow directions. The blood flow fields measured by E-uPIV (c) and uPIV (a) in regions of interest, marked as 1 and 2 in a and c, are enlarged for detailed comparison in b and d. The arrows in the vector fields indicate the flow direction and the color reflects the flow velocity. The flow velocities measured by uPIV and E-uPIV along line L1 [marked as white lines in a and c] are plotted for comparison in e. The normalized intensity distribution of uPIV and E-uPIV along white lines L2 [marked in b and (d)] are compared in f.

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