Fig. 4

Model selection criteria for three ⁶⁸Ga-PSMA-11 tracer kinetic models. Blue refers to the one-tissue compartment, two rate constant (1T2K) model. Red shows the two-tissue compartment, three parameter (2T3K) model, and green shows the two-tissue compartment, four parameter (2T4K) model. Relative \({\rm X}^{2}\) goodness-of-fit values are normalized to the model with the minimal \({\rm X}^{2}\) values for each patient