Prospective, multi-center, non-randomized, open label, double arm study to assess the performance of the KODEX-EPD PV occlusion viewer. This study includes patients with atrial fibrillation who are scheduled to undergo a cryo balloon ablation procedure for their atrial fibrillation.

The study is designed to evaluate the performance of the KODEX-EPD occlusion viewer using a standardized workflow in a blinded setting in a homogenous patient group. Furthermore, in an effort to minimize therapy, a direct comparison between the success of the freeze when initiating therapy based on the occlusion viewer vs the assessment of occlusion assessed with fluoroscopy will be evaluated. The study design indicates a post-market interventional clinical investigation to evaluate the endpoints of the study. No follow-up is foreseen ensuring a minimal burden to the subjects participating in the study.

Inclusion Criteria:

1. Subject must be aged >18 years.
2. Subject must have signed a written Informed Consent form to participate in the study, prior to any study related procedures.
3. Subject must be willing to comply with the protocol requirements.
4. Subject receives a de novo ablation procedure for treatment of atrial fibrillation.

Exclusion Criteria:

1. Pregnant women.

Arrhythmia patients scheduled to undergo a cryo balloon ablation procedure for their atrium fibrillation. Both male and female subjects who meet all eligibility criteria and give written informed consent will be enrolled in the study