FIG 2.

Detailed workflow of the MRA-fluoroscopy or CTA-fluoroscopy image fusion process for supra-aortic vessel catheterization in neurovascular interventions. Preoperative planning starts with uploading the MRA/CTA dataset on VesselNavigator. A, 3D semiautomatic segmentation of the aortic arch and the supra-aortic vessels and ostium labeling. B, Perioperative 2D–3D coregistration with 2 orthogonal positions of the anterior-posterior C-arm using anatomic landmarks. C, Perioperative augmented guidance.