Fig. 1.

Validation approach: a co-registration of the LA including the LAA (blue structure) segmented from preprocedural CMR to periprocedural XR-runs; b co-registration of the postprocedural CMR (yellow scaled) to the preprocedural CMR (grayscaled); c device marker localized in 3D ($P_i^{\mathrm{pair}}$, cyan marker) from marker positions identified in two XR projections (red marker) and their projection lines (red lines) relative to the co-registered LA segmentation (blue structure); d device marker identified in postprocedural CMR ($P_i^{\mathrm{CMR}}$, yellow marker); e XR-derived 3D marker positions ($P_i^{\mathrm{pair}}$, cyan marker) reconstructed from marker identified in XR (red marker) to device marker positions identified in postprocedural CMR ($P_i^{\mathrm{CMR}}$, yellow marker) visualized with the preprocedural LA segmentation (blue structure)