Patent ID: 8983589
Filing Date: 2015-03-17
Classification: A61B

Abstract:
1. A system for localizing ischemia in a heart of a patient under test for an ischemic event, comprising: an ECG apparatus for connection to a plurality of electrodes adapted to be attached to the patient under test to form a plurality of leads; a processor for dividing the patient's heart into a plurality cardiac segments, processing vector signals captured at the plurality of leads for determining normalized vector magnitudes for the leads, determining cardiac segment vectors for each of the plurality of cardiac segments, calculating an output or amount of ischemia for each of the cardiac segments by adding up a contribution to a detected ischemic level for all of the leads in a direction of each of the plurality of cardiac segment vectors at the J point based on the normalized vector magnitudes for the leads, by taking dot products of the lead vectors and the cardiac segment vectors to identify normalized responses for the leads at centers of the cardiac segments to realize the lead's contribution to the detected ischemic level and identifying an ischemic location and amount for each cardiac segment based on a sum of the contributions of all of the leads; and a display for presenting the ischemic location and amount calculated by the processor.