A. Pair 3,4 of the HD-Grid records a 0.5 mV signal, while the
signal recorded by pair 1,2 is of 0.22 mV. The distal dipole of the
ablation catheter records a signal of 0.06 mV. B. Ablation
catheter contact force of 14 grams during PVI. Complete disappearance of
the HD-Grid signal at the fourth beat after the beginning of RF (white
arrow and star). C and D. The related 3d anatomical maps.
Fig. 3. Intra-patient HD map: comparison of along, across and
HD-wave maps