Methods and systems for wavelength mapping cardiac fibrillation and optimizing ablation lesion placement

A method for mapping cardiac fibrillation in a patient, comprising:

• (a) providing a system for measuring cardiac fibrillation, wherein the system comprises:
• a two dimensional electrode array positioned at a first location on a patient's heart, wherein the two dimensional electrode array comprises at least a first electrode pair and a second electrode pair, wherein the first electrode pair is configured to detect a first local signal, and wherein the second electrode pair is configured to detect a second local signal,
• an ablation electrode, and
• a processing unit coupled to the two dimensional array;
• (b) registering, via the system, the location of the first electrode pair and the second electrode pair, wherein the first electrode pair and the second electrode pair are separated by a distance;
• (c) obtaining, via the system, a first conduction velocity measurement from the first local signal and the second local signal in response to electrical activity in the cardiac tissue, wherein the conduction velocity measurement is determined from a time difference between the first and the second local signals and the distance between the first electrode pair and the second electrode pair;
• (d) obtaining, via the system, a first cycle length measurement from the first local signal in response to the electrical activity in the cardiac tissue, wherein the first cycle length measurement is determined by a time difference between a first excitation and a second excitation detected in the first local signal;
• and
• (e) calculating, via the system, a first regional wavelength by multiplying the first conduction velocity measurement obtained in (c) and the first cycle length measurement obtained in (d);
• and
• (f) ablating the cardiac tissue at a driver location identified using the first regional wavelength.