Fig. 4.

Set of PA images showing the ink flow at various time points with the PLD-PAT system. PA imaging was done at a frame rate of 7000 fps. (a-d) Flow rate was 3 cm/s, (e-h) flow rate was 14 cm/s. All images have same scale bar shown in (a). The normalized colormap is shown on the right. Movie clips (Visualization 5 ^{(11.1MB, MP4)} , Visualization 6 ^{(6.7MB, MP4)} , Visualization 7 ^{(4.3MB, MP4)} , and Visualization 8 ^{(3.7MB, MP4)} ) show the ink flowing through the tube with 7000 fps PA B-scan imaging.