“…21 According to previous studies, the amount of protruding tissue, including a thrombus, in the stented segment in acute-phase OCT images was smaller in patients with ACS receiving prasugrel than in those receiving clopidogrel. 3,4 This implies that the rapid and potent antithrombotic effect of prasugrel may reduce thrombotic burden even in the acute phase. It can be hypothesized that this acute antithrombotic effect would contribute to the prevalence of subclinical IST in the late phase, as a "legacy effect".…”