TABLE 2.

Comparison of TIAC and TIAC Uncertainty Estimates Obtained with MIRDfit, NUKFIT, and SAAM II for ¹⁸F-FDG

		TIAC ± SD [h]
Source region	Fit function	SAAM II	NUKFIT	MIRDfit
Heart wall	Monoexponential (physical decay)	0.051 ± 0.009	0.051 ± 0.005	0.051 ± 0.009
Brain	Biexponential (uptake and clearance)	0.34 ± 0.02	0.37 ± 0.04	0.34 ± 0.03
Liver	Biexponential (rapid clearance and physical decay)	0.143 ± 0.008	0.143 ± 0.010	0.143 ± 0.008
Kidneys	Biexponential (rapid clearance and physical decay)	0.042 ± 0.004	0.042 ± 0.005	0.042 ± 0.004