Ablation analysis and catheter spatial stability
Our group had recently described a method for precise analysis of
catheter-tip spatial stability, utilizing custom developed MATLAB script
applied on X-Y-Z axis tip position data acquired at
60Hz8. Briefly, ablation data was extracted from
CARTO® and analyzed using custom MATLAB script
(Mathworks, USA). For each ablation lesion, the mean 3-dimensional (3-D)
catheter position was calculated, and catheter excursion was defined as
the distance between the position of the catheter tip, sampled at 60Hz,
to the mean 3-D catheter position for the lesion. The mean and maximal
catheter excursion were then calculated for each lesion (see Figure 1).
Contact force variability was defined as the standard deviation of the
contact force for the lesion.