Fig. 3From: Optimizing oropharyngeal cancer management by using proton beam therapy: trends of cost-effectivenessCost-effective scenarios and trends. a. The minimum NTCP-reduction for “cost-effective” at different WTP levels. b. The minimum NTCP-reduction for “cost-effective” at different proton treatment cost levels. Legend: IMPT becomes cost-effective when the NTCP-reduction is ≥ the corresponding percentage shown on the top of the bar. IMPT, intensity-modulated proton radiation therapy; NTCP, normal tissue complication probability; WTP: willingness-to-pay; $, US dollars; QALY, quality-adjusted life-yearBack to article page