TNNI3 and myocardial infarction: Kim et al reported sensitivity to myocardial necrosis detection of up to 99% in the acute phase of MI.[14] In addition, Wu et al identified focal images of delayed enhancement by gadolinium in the CMR after acute MI, with detection areas up to 0.16 g.[15] However, CMR studies have reported that cTnI has a low discriminatory power for detecting MI after coronary artery bypass procedures.