Fig. 5. Inducible ischemia and delayed perfusion in 50-year-old man who underwent coronary bypass graft surgery.

Delayed perfusion (arrow) due to long bypass graft is transmural and appears on both stress and rest images, while inducible perfusion defect (arrowhead) is subendocardial, lasts longer, and appears only on stress perfusion image. Invasive coronary angiography shows long, saphenous venous Y graft (arrow) to posterior descending coronary artery (Adapted from Kim et al. Korean J Radiol 2014;15:188-194 (8)).