System and method for three-dimensional mapping of electrophysiology information
View Patent ↗An electrophysiology apparatus is used to measure electrical activity occurring in a heart of a patient and to visualize the electrical activity and/or information related to the electrical activity. A three-dimensional map of the electrical activity and/or the information related to the electrical activity is created. Exemplary maps include a time difference between action potentials at a roving electrode and a reference electrode, the peak-to-peak timing of action potentials at the roving electrode, the peak negative voltage of action potentials at the roving electrode, complex fractionated electrogram information, a dominant frequency of an electrogram signal, a maximum peak amplitude at the dominant frequency, a ratio of energy in one band of the frequency-domain to the energy in a second band of the frequency-domain, a low-frequency or high-frequency passband of interest, a frequency with the maximum energy in a passband, a number of peaks within a passband, an energy, power, and/or area in each peak, a ratio of energy and/or area in each peak to that in another passband, and a width of each peak in a spectrum. Colors, shades of colors, and/or grayscales are assigned to values of the parameters and colors corresponding to the parameters for the electrograms sampled by the electrodes are updated on the three-dimensional model.
1. A system for presenting information representative of electrophysiological activity of a patient, the system comprising:
an electrical field generator for generating an electrical field in the patient;
at least one position electrode adapted to receive position data via said electrical field;
a plurality of data electrodes adapted to receive electrical data simultaneously from a plurality of locations within the patient;
at least one processor adapted to determine position information representative of said position data, to determine data information representative of said electrical data,
wherein said data information comprises complex fractionated electrogram information representative of said electrical data, wherein the complex fractionated electrogram information comprises a variance in time between discrete electrogram activations,
correlating said data information to said position information; and
a presentation device adapted to present said correlated data information and position information on a map.
2. The system of claim 1 , wherein said at least one position electrode comprises a roving electrode.
3. The system of claim 1 , wherein at least one of said plurality of data electrodes comprises said at least one position electrode.
4. The system of claim 1 , wherein said data information further comprises frequency-domain information representative of said complex fractionated electrogram information.
5. The system of claim 4 , wherein said frequency-domain information is determined via a fast Fourier transform of said complex fractionated electrogram information.
6. The system of claim 1 , wherein said map comprises a three-dimensional model.
7. The system of claim 6 , wherein said data information is presented via said three-dimensional model on which said data information is mapped to said plurality of locations corresponding to said data information.