Key result
A fully-automated stochastic strategy for registering and fusing CARTO electroanatomic maps with MDCT scans was validated for accuracy and reproducibility in 14 patients prior to ablation.
Why the study?
Does a fully-automated stochastic approach accurately register and fuse left atrial electroanatomic maps with 3D CT images in patients undergoing ablation?
Does a fully-automated stochastic approach accurately register and fuse left atrial electroanatomic maps with 3D CT images in patients undergoing ablation?
A novel fully-automated stochastic algorithm successfully registers and fuses electroanatomic maps with 3D CT images, potentially aiding in post-ablation assessment and real-time catheter guidance.
The integration of electroanatomic maps with highly resolved computed tomography cardiac images plays an important role in the successful planning of the ablation procedure of arrhythmias. In this paper, we present and validate a fully-automated strategy for the registration and fusion of sparse, atrial endocardial electroanatomic maps (CARTO maps) with detailed left atrial (LA) anatomical reconstructions segmented from a pre-procedural MDCT scan. Registration is accomplished by a parameterized geometric transformation of the CARTO points and by a stochastic search of the best parameter set which minimizes the misalignment between transformed CARTO points and the LA surface. The subsequent fusion of electrophysiological information on the registered CT atrium is obtained through radial basis function interpolation. The algorithm is validated by simulation and by real data from 14 patients referred to CT imaging prior to the ablation procedure. Results are presented, which show the validity of the algorithmic scheme as well as the accuracy and reproducibility of the integration process. The obtained results encourage the application of the integration method in post-intervention ablation assessment and basic AF research and suggest the development for real-time applications in catheter guiding during ablation intervention.
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Cristoforetti et al. (2007) studied Arrhythmias (n=14). Fully-automated strategy for registration and fusion of CARTO maps with MDCT scans was evaluated on Validity, accuracy and reproducibility of the integration process. A fully-automated stochastic strategy for registering and fusing CARTO electroanatomic maps with MDCT scans was validated for accuracy and reproducibility in 14 patients prior to ablation.
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