TNNT2 and myocardial infarction: CMR, cardiac magnetic resonance; MINOCA, myocardial infarction with non-obstructive coronary arteries; cTnT, cardiac troponin T; IS, infarct size; MVO, microvascular obstruction; MSI, myocardial salvage index; IMH, intramyocardial hemorrhage; HF, heart failure; LGE, late gadolinium enhancement