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Fig. 7 | BioMedical Engineering OnLine

Fig. 7

From: Atrial fibrillation source area probability mapping using electrogram patterns of multipole catheters

Fig. 7

Catheter placements and generated AF source area probability (ASAP) map at catheter placements of k = 1, 2, and 6 in the simulation case of Fig. 1a. a The principal wave direction (PWD) vector is shown at every catheter placement. Priority map α(k) is assigned to 1 at the region of PWD vector \(R_{\text{PWD}}^{\left( k \right)}\) (the red shaded area). The intersections of all the PWD vectors are obtained as the number of catheter placement increases. b The ASAP map is updated using the priority map. The boundary coordinates \(R_{H}^{\left( k \right)}\) of the ASAP area with the highest value is identified. The coordinate \(P^{{\left( {k + 1} \right)}}\) of the next catheter placement is determined using either the PWD-based method (cases in k = 1, 2) or centroid-based method (k = 6 case)

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