Annotation histogram

A system of facilitating display of cardiac information, the system comprising:

• a display device configured to present a representation of a cardiac map;
• and
• a processing unit configured to:
• receive a set of electrical signals;
• receive an indication of a measurement location corresponding to each electrical signal of the set of electrical signals;
• generate, based on the set of electrical signals, the cardiac map;
• facilitate presentation, on the display device, of a graphical user interface (GUI) that includes the cardiac map and a virtual probe;
• determine that the virtual probe is positioned in a first position;
• determine a selected region based on the first position and one or more selection parameters;
• and
• generate an annotation waveform, the annotation waveform corresponding to a subset of the set of electrical signals associated with the selected region, wherein the annotation waveform is based on deflections of the set of electrical signals from a baseline signal, wherein the baseline signal comprises at least one non-zero value and a deflection of the deflections from the baseline signal for the annotation waveform is from the non-zero value.

A method of facilitating processing of cardiac information, the method comprising:

• receiving a set of electrical signals;
• receiving an indication of a measurement location corresponding to each of the set of electrical signals;
• generating an annotation waveform corresponding to the set of electrical signals, the annotation waveform based on deflections of the set of electrical signals from a baseline signal, wherein the baseline signal comprises at least one non-zero value and a deflection of the deflections from the baseline signal for the annotation waveform is from the non-zero value;
• and
• generating, based on at least one of the annotation waveform and a set of annotation mapping values, an annotation histogram.