US 12,437,466 B2
Using signed distance functions to visualize pulsed field ablation (PFA) tags
Leonid Zaides, Atlit (IL); Lior Zar, Poria Illit (IL); Benjamin Cohen, Haifa (IL); and Natan Sharon Katz, Atlit (IL)
Assigned to Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed by Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed on Dec. 14, 2022, as Appl. No. 18/081,486.
Prior Publication US 2024/0203035 A1, Jun. 20, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06T 15/08 (2011.01); A61B 18/00 (2006.01); A61B 18/14 (2006.01); A61B 34/20 (2016.01)
CPC G06T 15/08 (2013.01) [A61B 18/1492 (2013.01); A61B 34/20 (2016.02); A61B 2018/00577 (2013.01); A61B 2018/1467 (2013.01); A61B 2034/2051 (2016.02); G06T 2210/41 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for visualization of pulsed field ablation tags, comprising:
a device, comprising a processor in communication with one or more sensors and a catheter comprising a plurality of electrodes; and
wherein the processor is configured to:
receive, via the one or more sensors, a position of each of the plurality of electrodes within a three-dimensional environment during a first ablation session,
calculate, for the first ablation session, a first implicit function representing an energy field of the first ablation session from the received positions of each of the plurality of electrodes, the first implicit function is calculated via a signed distance function based on positions of a pair of adjacent electrodes of the plurality of electrodes during the first ablation session, and
present, via a display, a first volumetric representation of the calculated first implicit function.