Patent ID: 8676305

Claim:
A method for mapping abnormal electrical activity, comprising: obtaining electrical signal data from respective locations in a heart of a living subject; automatically analyzing the signal data to identify complex fractionated electrograms (CFEs) therein; analyzing the CFEs so as to identify reentry locations comprised in the respective locations; establishing predefined minimum and maximum voltages V th and a predefined duration threshold T th ; assigning a window of interest (WOI) to a given CFE, and identifying qualifying deflections within the WOI, the qualifying deflections comprising peaks lying between predefined minimum and maximum voltages V th and evaluating a number of the qualifying deflections (NODs); adjusting for noise by verifying that the NODs lie within both the predefined minimum and maximum voltages V th and the predefined duration threshold T th and adjusting the NODs to account for noise when both the predefined minimum and maximum voltages V th and the predefined duration threshold T th conditions are not met; and displaying information derived from the identification in relation to a map of the heart.