The different colours in this figure can help identifying the culprit lesion in a acute myocardial infarction. Blue corresponds with a lateral MI (culprit lesion: RCX); red with inferior MI (culprit lesion: RCA); green with anterior MI (culprit lesion LAD and it's diagonal branches); yellow with a septal MI (culprit lesion LAD and it's septal branches). Image copyright of Apex innovations which produces the [
MI Rule to help education in identifying myocardial infarctions]