Anterior MI- elevation in V1, V2, V3, V4; depression may be present in II, III, AVF (left anterior decending branch of left coronary artery, aka LAD)
Inferior MI- elevation in II, III, AVF; depression may be present in I, AVL, V2-V4 (right corornary artery, aka RCA)
Lateral MI- elevation in I, AVL, V5, V6 (circumflex branch of left coronary artery, aka Circ)
Posterior MI-depression in V1, V2, V3 (could be RCA branch or Circ branch)