Registration maps using intra-cardiac signals
AssigneeBiosense Webster (Israel) Ltd.
InventorsRoy Urman, Ronen Krupnik, Liron Shmuel Mizrahi
Life of this patent
Estimating the term…
Abstract
Cardiac catheterization is facilitated by generating first and second electroanatomic maps of a heart of a subject and designating common spatial locations that correspond to first electrical events on the first electroanatomic map and second electrical events on the second electroanatomic map. The common spatial locations of the first electroanatomic map and the second electroanatomic map are aligned to establish an aligned map, and using the location data on the aligned map to guide a probe to a point of interest.
Claims14
A method, comprising the steps of:
- obtaining a first electroanatomic map of a heart of a living subject;
- obtaining a second electroanatomic map of the heart;
- identifying areas having common electrical activity in the first and second electroanatomic maps by identifying a plurality of first points in the first anatomic map and a plurality of second points in the second anatomic map where electrical activity in the first electroanatomic map and electrical activity in second electroanatomic map does not differ by more than a first threshold value and where respective distances between the plurality of first points and the plurality of second points on each electroanatomic map do not exceed a second threshold value;
- registering the first and second electroanatomic maps based on the areas identified as having common electrical activity;
- and
- controlling a display to show the registered first and second electroanatomic maps.
A data processing system comprising:
- a processor;
- a visual display screen;
- and
- a memory accessible to the processor storing programs and data objects therein, the programs including an electroanatomic map generator, an image registration program, an analysis program and a graphical user interface configured to present graphical information on the visual display screen, wherein execution of the programs cause the processor to perform the steps of:
- obtaining a first electroanatomic map of a heart of a living subject;
- obtaining a second electroanatomic map of the heart;
- identifying areas having common electrical activity in the first and second electroanatomic maps by identifying a plurality of first points in the first anatomic map and a plurality of second points in the second anatomic map where electrical activity in the first electroanatomic map and electrical activity in second electroanatomic map does not differ by more than a first threshold value and where respective distances between the plurality of first points and the plurality of second points on each electroanatomic map do not exceed a second threshold value;
- registering the first and second electroanatomic maps based on the areas identified as having common electrical activity;
- and
- controlling the visual display screen to show the registered first and second electroanatomic maps.
Dependencies are inferred from the claim text.