Fig. 2

X-ray coronary angiography (CAG) and coronary MR angiography (MRA) at diastole and systole. a Left anterior descending artery (LAD) of a 68-year-old man: CAG shows a significant stenosis (arrow) in the proximal LAD. Coronary MRA at diastole and systole also show a significant stenosis (arrow) in the proximal LAD. For combined coronary MRA analysis, these two location-matched stenosis presented in both modes was determined to be significant. b Right coronary artery (RCA) of a 65-year-old woman: CAG shows a normal RCA without significant stenosis. Coronary MRA at diastole shows false-positive stenoses (arrows) of RCA, which were not observed at coronary MRA at systole, therefore the RCA was defined as having no significant stenosis. c LAD of a 54-year-old woman: CAG shows a normal LAD without significant stenosis. Both coronary MRA at diastole and systole show a normal LAD without significant stenosis, therefore the LAD was defined as having no significant stenosis