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. 2017 May 16;10(5):e004899. doi: 10.1161/CIRCEP.116.004899

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© 2017 The Authors.

Circulation: Arrhythmia and Electrophysiology is published on behalf of the American Heart Association, Inc., by Wolters Kluwer Health, Inc. This is an open access article under the terms of the Creative Commons Attribution Non-Commercial-NoDerivs License, which permits use, distribution, and reproduction in any medium, provided that the original work is properly cited, the use is noncommercial, and no modifications or adaptations are made.

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Figure 7. — Low-resolution basket catheters are prone to false detections. A, Interelectrode distances in an 8-spline basket catheter. Resolution requirements for avoiding false detections for the 2 wavelengths (45.2 and 75.2 mm) are marked. B, Example isopotential map for longer wavelength simulation with basket electrodes marked. C, High-resolution phase map generated from phase at mesh vertices. Phase singularity (PS) marked as a black dot. D, Phase of electrodes as arranged on a regular 8×8 grid. E, Interpolated phase from basket arrangement of electrodes. F, Rotor PS locations computed from high-resolution data (blue) and the 8-spline basket electrodes (red) for the short wavelength simulation. Only PSs that correspond to the rotor are shown. G, All detected PSs of 8-spline basket catheter. H, PS detection histogram for 8-spline catheter. I, Rotor PS locations, (J) all PSs, and (K) PS detection histogram for a simulated 16-spline catheter—double the clinical resolution.