Application of deep learning reconstruction of ultra-low-dose abdominal CT in the diagnosis of renal calculi

Insights into Imaging

Table 1 CT values for various abdominal organs and tissues

CT (HU)	LD-HIR (group 1)	ULD-HIR (group 2)	ULD-DLR (group 3)	P 1 vs. 2 vs. 3	P 1 vs. 2	P 1 vs. 3	P 2 vs. 3
Liver	56.30 ± 8.87	59.44 ± 8.32	57.70 ± 8.36	0.104	0.034	0.389	0.216
Spleen	50.16 ± 3.39	52.83 ± 3.32	51.11 ± 3.29	< 0.001	< 0.001	0.144	0.005
Kidney	32.89 ± 3.46	35.38 ± 3.87	33.73 ± 3.69	< 0.001	< 0.001	0.097	0.003
Aorta	43.47 ± 5.90	46.01 ± 5.23	44.81 ± 4.90	0.025	0.008	0.173	0.137
Muscle	50.76 ± 5.35	54.94 ± 7.00	51.57 ± 6.09	< .001	< 0.001	0.221	< 0.001
Fat	− 110.11 ± 9.73	− 111.02 ± 6.69	− 108.48 ± 6.51	0.064	0.848	0.074	0.025