Table 5.

Subjective scoring for the whole image quality of all pulmonary nodules among 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
Morphological display of nodules	4.37 ± 0.49	2.71 ± 0.51	3.37 ± 0.49	4.32 ± 0.52	<0.001	0.66	<0.001	<0.001	<0.001	<0.001	<0.001
Visibility for surrounding lung tissue	4.41 ± 0.50	2.44 ± 0.55	3.24 ± 0.58	4.29 ± 0.56	<0.001	0.32	<0.001	<0.001	<0.001	<0.001	<0.001
Artifacts and diagnostic confidence	4.36 ± 0.49	2.46 ± 0.55	3.34 ± 0.62	4.27 ± 0.50	<0.001	0.41	<0.001	<0.001	<0.001	<0.001	<0.001

ASIR, adaptive statistical iterative reconstruction; DLIR, deep learning image reconstruction; DLIR-H: DLIR-H with low-dose; DLIR-M: DLIR-M with low-dose; LDCT: ASIR-V40% with low-dose;LDCT, low-dose CT; SD, standard deviation; SDCT, standard-dose CT; SDCT: ASIR-V40% with standard-dose.