(A) The endocardial (LVEN) and epicardial (LVEP) borders at the end diastole of delay enhancement image were trace manually. The white arrows indicating the extension of transmural myocardial infarction shown up as area of LGE. (B) A computer-assisted semiautomatic technique was applied to quantify the %MDE
. The computer algorithm then used the signal-intensity thresholds of >3 SDs and 2 to 3 SDs above the normal myocardial segment (REMT) to delineate the infarct core (LYMO1- red region) and peri-infarct area (LYMO 2-yellow region) respectively.