CMR Repeatability in STEMI

Cardiovascular Magnetic Resonance Scan Repeatability in ST Segment Elevation Myocardial Infarction

The investigators propose to conduct a study to measure the reproducibility of CMR parameters that have been used to predict outcome following PPCI: infarct size, left ventricular volumes, myocardial salvage, microvascular obstruction (MVO) and myocardial oedema.

Inclusion Criteria:

Participant may enter study if ALL of the following apply

1. ST segment myocardial infarction as defined by ECG (by 2 contiguous limb leads with >1 mm ST-segment elevation, or >2 mm ST-segment elevation in contiguous precordial leads, or new LBBB) and > 20 minutes of cardiac chest pain
2. Written informed consent

Exclusion Criteria:

Participant may not enter study if ANY of the following apply

1. Contraindication to MRI (implanted pacemaker/ defibrillator, ferromagnetic metal implant/ injury, claustrophobia, obesity/ too large for CMR scanner)
2. Known allergy to gadolinium
3. Chronic atrial fibrillation
4. Renal impairment with eGFR <30
5. Cardiogenic shock
6. Patients with special communication needs