Table 2.

Summary of SUV parameters in the background organs and target lesions

SUV parameter	Digital PET/CT	Standard PET/CT	P	Difference	90% CI	Equivalence level
Liver SUVmax	3.09 ± 0.68	3.20 ± 0.71	0.068	0.11 ± 0.31	0.011; 0.205	Equivalent
Liver SUVmean	2.31 ± 0.44	2.31 ± 0.43	0.811	0.01 ± 0.21	− 0.056; 0.075	Equivalent
Liver SUVsd	0.21 ± 0.06	0.27 ± 0.09	< 0.001	0.06 ± 0.05	0.046; 0.077
Blood pool SUVmax	2.09 ± 0.43	2.07 ± 0.44	0.753	− 0.02 ± 0.39	− 0.146; 0.100	Equivalent
Blood pool SUVmean	1.58 ± 0.36	1.54 ± 0.33	0.299	− 0.04 ± 0.27	− 0.124; 0.046	Equivalent
Blood pool SUVsd	0.17 ± 0.04	0.19 ± 0.06	0.048	0.02 ± 0.06	0.004; 0.043
Lesions SUVmax	7.72 ± 7.30	7.58 ± 8.40	0.532	− 0.14 ± 2.05	− 0.522; 0.236	Equivalent
Lesions SUVpeak	5.27 ± 6.02	5.07 ± 5.99	0.089	− 0.19 ± 1.02	− 0.383; − 0.006	Equivalent
SNR	11.13 ± 2.01	8.71 ± 1.32	< 0.001	− 2.42 ± 1.98	− 3.031; − 1.801

Data are presented as mean with standard deviation

SUV, standardized uptake value; CI, confidence interval; SUVmax, maximum SUV; SUVmean, mean SUV; SUVsd, standard deviation of SUV; SUVpeak, peak SUV; SNR, signal-to-noise ratio of the liver