Phantom study and clinical application of total-body 18F-FDG PET/CT imaging: How to use small voxel imaging better?

EJNMMI Physics

Table 4 Comparisons of objective evaluation indexes of image quality among different scanning durations time within imaging matrices

Matrix	Index	P₀	P₁	P₂	P₃	P₄	P₅	P₆
512×512	SUV_max,liver	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001
	SUV_mean,live	< 0.001	0.155	0.031	0.005	0.074	0.005	0.002
	SD_liver	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001
	SNR_liver	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001
1024×1024	SUV_max,liver	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001
	SUV_mean,live	0.001	0.676	0.130	0.037	0.147	0.011	0.010
	SD_liver	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001
	SNR_liver	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001
512×512	SUV_max,lesion	< 0.001	0.017	< 0.001	< 0.001	0.003	0.004	0.249
512×512	TLR	0.600	1.000	0.271	1.000	1.000	1.000	1.000
1024×1024	SUV_max,lesion	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	0.926
1024×1024	TLR	< 0.001	0.063	0.002	0.021	0.099	1.000	1.000

P₀ indicates P values of Freidman test among four time groups; P₁ to P₆ indicates adjusted P values after Bonferroni corrections from comparisons between 3 and 5 min, between 3 and 8 min, between 3 and 10 min, between 5 and 8 min, between 5 and 10 min, and between 8 and 10 min, respectively
SUV_max,liver SUV_max of liver, SNR signal-to-noise ratio, SUV_max,lesion SUV_max of lesion, TLR lesion-to-liver ratio