ST_elevation In MI

Hey dear sweet nurses
I need your help in this question;what is the reason for ST_ elevation in MI;why ST ?
Will paste this from an article I just read. Hope it helps. "The ST segment corresponds to a period of ventricle systolic depolarization, when the cardiac muscle is contracted. Subsequent relaxation occurs during the diastolic repolarization phase. The normal course of ST segment reflects a certain sequence of muscular layers undergoing repolarization and certain timing of this activity. When the cardiac muscle is damaged or undergoes a pathological process (e.g. inflammation), its contractile and electrical properties change. Usually, this leads to early repolarization, or premature ending of the systole."

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