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Figure 7 Image Integration: Fusion of MDCT and Electroanatomical Mapping
The process of image integration consists of several steps. First, multidetector row computed tomography (MDCT) scanning is performed (left panel). With the use of dedicated algorithms based on setting intensity levels for Hounsfield units, the MDCT scan is segmented into different structures (middle panel). During the catheter ablation procedure, the segmented left atrium is aligned with the reconstructed electroanatomical map (registration). Finally, the actual ablation can be performed guided by the anatomy of the left atrium and pulmonary veins (right panel). Based on the real anatomy derived from the MDCT scan, the radiofrequency lesions (represented by the red dots, right panel) can be targeted around the pulmonary veins.
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