ITERATIVE COHERENT MAPPING OF ELECTROPHYSIOLOGICAL ACTIVATION OF HEART, INCLUDING EFFECT OF RE-ENTRY Russian patent published in 2022 - IPC A61B5/283 A61B5/343 A61B5/349 A61B5/363 

FIELD: medicine.

SUBSTANCE: group of inventions relates to medicine, namely to a method and a system for iterative coherent mapping of electrophysiological activation of the heart. In this case, an input grid representation of the cardiac chamber, a set of measured locations on the wall tissue of the cardiac chamber and a corresponding set of local activation time (hereinafter – LAT) values measured at these locations are received. The input grid is rearranged into a regular grid containing polygons of a regular shape. Data of the set of measured locations and corresponding LAT is coordinated with polygons of a regular shape. Iterative calculation of corresponding LAT values is carried out for polygons of a regular shape so that to obtain a cyclic solution of an activation EF wave on the regular grid, which takes into account the re-entry of the EF wave. The iterative calculation of corresponding LAT values contains an iterative solution of a set of complex-valued equations performed with the possibility of describing the re-entry of the EF wave by including the value of the re-entry cycle length. An electroanatomic map containing a cyclic activation EF wave superimposed on the regular grid is presented.

EFFECT: simplified and reliable mapping and interpretation of complex arrhythmias is achieved with an increase in the efficiency of subsequent invasive heart treatment, such as catheter ablation, by taking into account repeated wave inputs, which allows eliminating the resulting re-entry artifacts on the EF map.

6 cl, 6 dwg