Figure Legend:
Figure 1: Short axis view of the posterior descending artery. Note the significant calcifications and subsequent acoustic shadowing. A branch of the middle cardiac vein is present on the right side of the picture.
Video 1: This video shows the presence of retrograde cardioplegia flow within the cardiac arterial and venous system during cardiopulmonary bypass.
Figure 2: Short axis view of the left anterior descending artery. The arrows points to the presence of calcification. Additionally, intraluminal irregularities are noted within the artery.