Advances in Imaging for Atrial Fibrillation Ablation
Figure 3
Rotational angiography. A tremendous improvement on fluoroscopy was the development of rotational angiography. Here the C-arm used for fluoroscopy rapidly rotates around the patient while contrast opacifies the left atrium. ((a) Contrast injected in the right atrium and then a delay of 8 seconds until the LA opacifies, (b) direct injection into the left atrium), following segmentation of the resulting dataset, which is semiautomatic; a 3D anatomical accurate shell can then be superimposed on the live fluoroscopy (c) to aid with ablation, or exported to other mapping systems.
