Figure 5.

Imaging and Pathology Before, During, and After Reperfusion

(A) PVI ratios are shown for 3 swine at baseline, during 90-min LAD occlusion, and during reperfusion. The hyperemia peak is observed after 20 min of reperfusion. (B) Strong local hyperemia and dilated arteries and veins presenting abnormal structures are observed with ultrafast Doppler imaging during reperfusion in the LAD territory (time = 110 min). (C) Corresponding heart section stained with triphenyltetrazolium chloride. Infarcted tissue appears white. White dotted lines outline regions that contain infarcted areas of interests in the heart section, and corresponding B-mode and Doppler images. LAD = left anterior descending coronary artery; LCx = left circumflex artery; VpwDoppler ratio = power velocity integral ratio.