Low atrial endocardial bipolar voltage, measured during catheter ablation for atrial
fibrillation (AF), is a commonly used surrogate marker for the presence of atrial fibrosis. Low …

The extracellular electrogram is caused by transmembrane currents that flow into
extracellular space during propagation of the electrical impulse. Electrograms are usually …

We propose FiberNet, a method to estimate in-vivo the cardiac fiber architecture of the
human atria from multiple catheter recordings of the electrical activation. Cardiac fibers play …

Methods Omnipolar map** technology (OT) uses both unipolar and bipolar signals to
obtain omnipolar signals, directions, and speeds. Supplemental Video 2 explains in detail …

Background: A new grid map** catheter (GMC)—allowing for bipolar recordings of the
electrograms in each orthogonal direction—became available. The aim of the current study …

Background: Low-voltage areas (LVAs) are commonly considered surrogate markers for an
arrhythmogenic substrate underlying tachyarrhythmias. It remains challenging to define a …

Background: Low-voltage–guided substrate modification is an emerging strategy in atrial
fibrillation (AF) ablation. A major limitation to contemporary bipolar electrogram (EGM) …

Background Electroanatomic map** systems are used to support electrophysiology
research. Data exported from these systems is stored in proprietary formats which are …

Abstract Aims Bipolar electrogram (BiEGM)-based substrate maps are heavily influenced by
direction of a wavefront to the map** bipole. In this study, we evaluate high-resolution …

Atrial fibrillation (AF) is the most common arrhythmia encountered in clinical practice, with a
prevalence that increases alongside the ageing population worldwide. The management of …