Endocardial extent by contrast enhanced cardiac magnetic resonance imaging is not an accurate method for assessing myocardium at risk; validation with T2-weighted cardiac magnetic resonance imaging

In the situation of acute coronary occlusion, the myocardium supplied by the occluded vessel is subject to ischemia and is referred to as the myocardium at risk (MaR). It has previously been shown that cardiac magnetic resonance (CMR) imaging can be used for the assessment of MaR employing a T2-weighted edema sequence. Recently, it has been suggested that the endocardial extent of hyperenhancement as assessed by contrast enhanced CMR can also be used to quantify the MaR.