RT Journal Article
T1 Real-time rotational activity detection in atrial fibrillation
A1 Ríos Muñoz, Gonzalo Ricardo
A1 Arenal, Ángel
A1 Artés Rodríguez, Antonio
AB Rotational activations, or spiral waves, are one of the proposed mechanisms for atrial fibrillation (AF) maintenance. We present a system for assessing the presence of rotational activity from intracardiac electrograms (EGMs). Our system is able to operate in real-time with multi-electrode catheters of different topologies in contact with the atrial wall, and it is based on new local activation time (LAT) estimation and rotational activity detection methods. The EGM LAT estimation method is based on the identification of the highest sustained negative slope of unipolar signals. The method is implemented as a linear filter whose output is interpolated on a regular grid to match any catheter topology. Its operation is illustrated on selected signals and compared to the classical Hilbert-Transform-based phase analysis. After the estimation of the LAT on the regular grid, the detection of rotational activity in the atrium is done by a novel method based on the optical flow of the wavefront dynamics, and a rotation pattern match. The methods have been validated using in silico and real AF signals.
PB Frontiers Media
SN 1664-042X
YR 2018
FD 2018-03
LK https://hdl.handle.net/10016/34131
UL https://hdl.handle.net/10016/34131
LA eng
NO Corrigendum: Real-Time Rotational Activity Detection in Atrial Fibrillation, Frontiers in Physiology., 04 September 2018. https://doi.org/10.3389/fphys.2018.01260
NO This work has been partly supported by MINECO/FEDER (ADVENTURE, id. TEC2015-69868-C2-1-R), Comunidad de Madrid (project CASI-CAM-CM, id. S2013/ICE-2845), and the grant Beca de la Sección de Electrofisiología y Arritmias de la SEC.
DS e-Archivo
RD 1 sept. 2024