The Next Leap in Cardiac Magnetic Resonance Imaging:Cycling the Field

Who May Qualify: - Participant who is willing and able to give willing to sign a consent form for participation in the study - Healthy volunteers willing to give willing to sign a consent form for participation in the study - Patients diagnosed with a previous myocardial infarction Who Should NOT Join This Trial: - Unwillingness to participate - Claustrophobia - Contraindication to MRI scanning such as implantable cardiac devices - Participants who have had a previous myocardial infarction in the past of which they may not be aware and this is discovered whilst being scanned on the 3T MRI scanner, or who may have any other cardiology condition that they were previously unaware will not be included in the healthy control group, even if they present themselves to us as "healthy" at the time of the study visit - Pregnancy - Body habitus that may preclude comfortable positioning of the volunteer in either of the MRI scanners (\>50cm in diameter) - Participants with abnormal kidney function that will preclude them from receiving a contrast agent Always talk to your doctor about whether this trial is right for you.