Deterministic sensitivity analysis. (a). Tornado diagram showing the impact of input parameters on incremental cost-effectiveness ratio (ICER) starting from expected value (EV) in base case scenario. For every parameter range investigated, the ICER of 18F-FDG PET/CT remained below the willingness-to-pay threshold of $100,000 per QALY (quality of life year) indicating cost-effectiveness of 18F-FDG PET/CT in this setting. (b). Analysis investigating the impact of probability of complete ablation on cost-effectiveness. Especially in patients with high risk of incomplete ablation, 18F-FDG PET-CT is the cost-effective strategy in comparison to CE-CT. ICER, incremental cost-effectiveness ratio; WTP, willingness-to-pay.