Non-ST Elevation Myocardial Infarctions (NSTEMIs) have subtle changes in morphologies that may not be obvious on a 12-lead ECG. This limits the 12-lead ECG's ability to affirmatively indicate the presence or absence of NSTEMIs. The 3-D Vector ECG system developed by Ngee Ann Polytechnic, which has similarities to vector cardiography (VCG, i.e. the Frank lead system) is postulated to have better sensitivity to MI than the routine 12-lead ECG. Modern graphical user interface techniques used by the 3-D Vector ECG system makes interpretation easier than VCG. Additionally, since the electrode placements are identical to a 12-lead ECG. The clinical procedure for acquiring the signals is not disrupted, increasing its viability for integration into existing workflow.