Region of interest focal source detection

A system for atrial focal source detection which improves processing performance, the system comprising:

• a plurality of sensors configured to detect a plurality of electro-cardiogram (ECG) signals each indicating electrical activity of a heart over time, each of the plurality of sensors configured to detect one of the ECG signals;
• a processing device comprising one or more processors configured to:
• determine, for each of the plurality of ECG signals, one or more local activation times (LATs) each indicating a time of activation of a corresponding ECG signal;
• and
• generate for display, based on the LATs, at least two matrices having a number of rows and a number of columns of elements, each element representing one of the plurality of sensors and for a first matrix, each element visually indicating a level of incidence of the atrial activations of each corresponding ECG signal occurring before atrial activations of ECG signals acquired by a plurality of neighboring sensors within a period of time, and for a second matrix, each element visually indicating a level of incidence of encountered waves in which the one sensor was activated before the plurality of neighboring sensors,
• wherein the displayed first matrix and second matrix visually indicate whether one or more focal source areas of activation are in the heart.

A non-transitory computer readable medium comprising instructions for causing a computer to execute a method of atrial focal source detection which improves processing performance, the instructions comprising:

• detecting, via a plurality of sensors, electro-cardiogram (ECG) signals over time, each ECG signal detected via one of the plurality of sensors and indicating electrical activity of a heart;
• determining, for each of the plurality of ECG signals, one or more local activation times (LATs) each indicating a time of activation of a corresponding ECG signal;
• and
• generating for display, based on the LATs, at least two matrices having a number of rows and a number of columns of elements, each element representing one of the plurality of sensors and for a first matrix, each element visually indicating a level of incidence of the atrial activations of each corresponding ECG signal occurring before atrial activations of ECG signals acquired by a plurality of neighboring sensors within a period of time, and for a second matrix, each element visually indicating a level of incidence of encountered waves in which the one sensor was activated before the plurality of neighboring sensors,
• wherein the displayed first matrix and second matrix visually indicate whether one or more focal source areas of activation are in the heart.