Analysis and detection for arrhythmia drivers

A system comprising:

• memory to store machine readable instructions and data, the data comprising store electrical data representing electrical activity for a plurality of nodes distributed across a geometric surface over a plurality of time samples;
• at least one processor to access the memory and execute the instructions, the instructions comprising:
• an arrhythmia driver analyzer comprising:
• a wave front analyzer programmed to compute wave front lines extending over a surface for each of the plurality of time samples based on phase information computed from electrical data at nodes distributed across the surface for each of the plurality of time samples;
• a trajectory detector programmed to compute wave break points for each of the wave front lines and to determined a trajectory of at least one rotor core across the surface based on applying temporal and spatial constraints to the wave break points through a sequence of the time samples, the determined trajectory being stored as arrhythmia driver data in the memory, wherein applying the spatial constraints to the wave break points comprises:
• comparing a spatial distance for a given wave break point relative to another wave break point through the sequence of the time samples relative to a predetermined threshold distance;
• and appending the other wave break point to the given wave break point through the sequence of time samples to define the trajectory of the at least one rotor core if the spatial distance is less than the predetermined threshold distance;
• and a stability detector programmed to identify at least one stable rotor portion corresponding to sub-trajectories of the determined trajectory, each identified stable rotor portion being stored as the arrhythmia driver data in the memory.

A method comprising:

• determining a wave front on a geometric surface based on evaluating computed phase values for each of a plurality nodes distributed across the geometric surface for each of a plurality of time samples over at least one time interval, the determined wave front being stored in memory as wave front data;
• determining a pair of wave break points for the wave front line at a given time sample of at least one time interval;
• for another time sample:
• comparing a spatial distance for a given wave break point relative to each active trajectory in a previous time sample relative to a predetermined threshold distance;
• appending the given wave break point to update a closest active trajectory if the spatial distance is less than the predetermined threshold distance;
• and
• repeating the comparing and the appending for each wave break point over the plurality of time samples;
• and
• determining a trajectory of a rotor core over the at least one time interval based on the repeating and the comparing, the determined trajectory being stored in the memory as trajectory data;
• and
• evaluating an indication of stability for the rotor over the at least one time interval to identify at least one stable portion for the rotor based on analyzing the trajectory data and the wave front data.