Takahata M, Ino Y, Kubo T, et al. - This study was attempted to explore the prevalence and clinical features of artery‐to‐artery embolic myocardial infarction (AAEMI) by using optical coherence tomography. In this study, 297 patients with ST‐segment–elevation myocardial infarction who had undergone optical coherence tomography before percutaneous coronary intervention were retrospectively included. The data indicated that for ST‐segment–elevation myocardial infarction, AAEMI is a rare cause and has unique morphological features of plaque including a larger lumen area at rupture site and smaller lumen area at the occlusion site.