title: Correlation of electrocardiogram and regional cardiac magnetic resonance imaging findings in ST-elevation myocardial infarction: a literature review.
abstract: BACKGROUND
  Patients with acute ST-elevation myocardial infarction (STEMI) benefit substantially from emergent coronary reperfusion. The principal mechanism is to open the occluded coronary artery to minimize myocardial injury. Thus the size of the area at risk is a critical determinant of the patient outcome, although other factors, such as reperfusion injury, have major impact on the final infarct size. Acute coronary occlusion almost immediately induces metabolic changes within the myocardium, which can be assessed with both the electrocardiogram (ECG) and cardiac magnetic resonance (CMR) imaging.
  
  
  METHODS
  The 12-lead ECG is the principal diagnostic method to detect and risk-stratify acute STEMI. However, to achieve a correct diagnosis, it is paramount to compare different ECG parameters with golden standards in imaging, such as CMR. In this review, we discuss aspects of ECG and CMR in the assessment of acute regional ischemic changes in the myocardium using the 17 segment model of the left ventricle presented by American Heart Association (AHA), and their relation to coronary artery anatomy.
  
  
  RESULTS
  Using the 17 segment model of AHA, the segments 12 and 16 remain controversial. There is an important overlap in myocardial blood supply at the antero-lateral region between LAD and LCx territories concerning these two segments.
  
  
  CONCLUSIONS
  No all-encompassing correlation can be found between ECG and CMR findings in acute ischemia with respect to coronary anatomy.
authors.affiliation: Department of Clinical Radiology, Tampere University Hospital, Finland.
authors.forename: Irina
authors.initials: I
authors.lastname: Rinta-Kiikka
authors.forename: Suvi
authors.initials: S
authors.lastname: Tuohinen
authors.forename: Pertti
authors.initials: P
authors.lastname: Ryymin
authors.forename: Petteri
authors.initials: P
authors.lastname: Kosonen
authors.forename: Heini
authors.initials: H
authors.lastname: Huhtala
authors.forename: Anton
authors.initials: A
authors.lastname: Gorgels
authors.forename: Antonio
authors.initials: A
authors.lastname: Bayés de Luna
authors.forename: Kjell
authors.initials: K
authors.lastname: Nikus
mesh_terms: D003331:Coronary Vessels / Q000473:pathology; D004562:Electrocardiography / Q000379:methods*; D006801:Humans; D018810:Magnetic Resonance Angiography / Q000379:methods*; D009203:Myocardial Infarction / Q000175:diagnosis* / Q000473:pathology; D009206:Myocardium / Q000473:pathology; D015203:Reproducibility of Results
keywords: ECG; acute myocardial infarction; cardiac MR; coronary artery territories