Table 4.

Subjective image analysis results with ASIR-V and DLIR under different radiation doses

Variables	SDCT	LDCT	DLIR-M	DLIR-H	P
					P	SDCT vs DLIR-H	SDCT vs DLIR-M	SDCT vs LDCT	DLIR-H vs DL-M	DLIR-H vs LDCT	DLIR-M vs LDCT
Solid nodule	4.20 ± 0.40	2.72 ± 0.62	3.31 ± 0.73	4.08 ± 0.49	<0.001	0.43	<0.001	<0.001	<0.001	<0.001	<0.001
Ground-glass nodule	3.70 ± 0.47	2.10 ± 0.31	2.33 ± 0.48	3.47 ± 0.82	<0.001	0.34	<0.001	<0.001	<0.001	<0.001	0.16
Mediastinal tissue	4.12 ± 0.33	2.04 ± 0.20	3.02 ± 0.44	3.85 ± 0.41	<0.001	<0.005	<0.001	<0.001	<0.001	<0.001	<0.001

ASIR, adaptive statistical iterative reconstruction; DLIR, deep learning image reconstruction; LDCT, low-dose CT; SD, standard deviation; SDCT, standard-dose CT.

Data are presented as mean ± SD. p < 0.05; SDCT: ASIR-V40% with standard-dose; LDCT: ASIR-V40% with low-dose; DLIR-M: DLIR-M with low-dose; DLIR-H: DLIR-H with low-dose.