Table 1.

NAFCIST criteria

Response category	Criteria
Complete metabolic response	Normalization of all lesions (target and non-target) to SUV less than the mean skeletal SUV and equal to the normal surrounding tissue SUV
Partial metabolic response	>30% decrease in SUV peak
Progressive metabolic disease	>30% decrease in SUV peak, >75% increase in total Na 18F uptake, or new lesions
Stable metabolic disease	Does not meet other criteria

Adapted from Kairemo et al.¹²

NAFCIST, Na¹⁸F Response Criteria in Solid Tumors; SUV, standardized uptake values.