• 1. Determine the discriminatory ability of the scores derived from the MCG evaluation to discriminate between patients with versus without a clinical diagnosis of ACS at discharge.
  
• 2. Compare the discriminatory ability of scores derived from the MCG, the troponin level, and the ECG results, seperately or in combination, to discriminate between patients with without a diagnosis of ACS at discharge.
  

• 1. Evaluate the sensitivity of the MCG to detect an ultimate diagnosis of ACS, MI, CHF, or death at 1 month, 6 months, and 1 year following discharge.
  

Coronary Artery Disease is the leading cause of death in the United States. The non invasive detection of Acute Coronary Syndromes (ACS's) remains a clinical challenge. Electrocardiogram (ECG) may only diagnose myocardial infarction in 50 % of the cases. Magnetocardiography is a new and noninvasive method capable of measuring and mapping the magnetic field that is generated during the cardiac cycle. The electric current is affected by ischemic damage, which in turn alters the magnetic field. The magnetic field is not affected by body tissues, unlike the surface current measurements in ECG.

Comparisons: The diagnostic accuracy of the CMI-Magnetocardiograph will be compared to that of the ECG in diagnosing High Risk Unstable Angina.