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Fig. 1 | BMC Cardiovascular Disorders

Fig. 1

From: Spatial correction improves accuracy of catheter positioning during ablation of premature ventricular contractions: differences between ventricular outflow tracts and other localizations

Fig. 1

Visualization of spatial displacement. Activation maps of PVCs using CARTO III, Software Version 7 Carto Prime, Biosense Webster, RAO-view (45°). Left panel: Conventional activation map during an ablation procedure of PVCs with origin in the outflow tract. Right panel: Activation map with correction for spatial displacement for the same PVC-morphology. Red point: Mapping point with earliest local activation time (LAT) in the conventional map. Blue point: Mapping point with earliest LAT in hybrid activation map. Colors indicate the LAT relative to the selected reference in surface ECG. Red areas show the earliest activation, while late activation is visualized as purple area (see LAT scale in the top right corner). In this case, the area of earliest local activation was spatially displaced by 7.5 mm compared to the conventional activation map

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BMC Cardiovascular Disorders

ISSN: 1471-2261

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