Introduction: The 3D cardiac rotational angiography (3DRA) is a modern method enabling to create CT-like 3D images. These 3D models are used to improve orientation during catheter ablation. The objective of the study was to compare clinical success of catheter ablation of atrial fibrillation (AF) supported by 3D models of the left atrium obtained from CT scans and 3DRA.
Methods: This is a prospective, randomized study. 120 patients were randomized, 62 patients (29% persistent AF) who underwent catheter ablation supported by model from CT scan and 58 (34% of persistent AF) by using 3DRA. Clinical success was any documentation of AF within 6 months after catheter ablation.
Results: Reccurence of arrhythmias was observed in 26% (3DRA group) vs. 31% (CT scan group) of patients (p<0.561). The fluoroscopy exposure was 2,3 mGycm2 (3DRA group) vs. 10,2 mGycm2 (CT scan group) with p<0.001. The dose of contrast was significantly lower in 3DRA group (p<0.001).
Conclusions: Clinical success of catheter ablation supported by 3DRA is comparable with CT scan. In addition, fluoroscopy exposure and dose of contrast with this method is significantly lower.