Case of angina pectoris at rest and during effort due to coronary spasm and myocardial bridging

Figure 3 Coronary angiography after the intracoronary infusion of nitroglycerin. A: There was a mild atherosclerotic change at the proximal segment of the right coronary artery (RCA); B: There was a mild atherosclerotic change (indicated with arrows) in the proximal segment of the left anterior descending coronary artery (LAD) at the end-diastolic phase; C: There was myocardial bridging (indicated with arrows) at the mid-distal segments of the LAD at the end-systolic phase.