DBP3:Utah:Reg Motiv

Left Atrial Registration

• Targeting the LA wall and pulmonary veins

Pre-ablation LGE-MRI Image	Post-ablation LGE-MRI Image
MRI image acquired approx. 15 minutes after contrast injection and prior to ablation. (The LA is the gray, horizontally oriented structure above the spine in the center of the image)	MRI image acquired approx. 15 minutes after contrast injection and after the ablation was performed. Sections of the LA wall which were ablated appear as hyper-enhanced pixels in the LA wall.
MRA Image	Segmentation of LGE-MRI Image
The MRA is acquired after contrast injection and before the LGE-MRI images above. This image type highlights the blood pool of the LA and some surrounding structures.	manual segmentation of the LA is performed on pre- and post-ablation LGE-MRI images by the CARMA team. Here the blue mask denotes the LA wall and the orange the blood pool.