Table 6. Qualitative image quality scores calculated by two radiologists across the eight reconstruction methods.

	Radiologists	FBP	AV-30	AV-50	AV-80	AV-100	DL-L	DL-M	DL-H
Image noise κ value =0.796	1	1.00±0.00	2.93±0.37	3.03±0.61	3.97±0.41	4.80±0.41	2.97±0.49	4.00±0.45	4.87±0.35
	2	1.00±0.00	2.77±3.10	3.07±0.52	4.00±0.45	4.83±0.46	3.13±0.57	4.07±0.45	4.90±0.31
	Average*	1.00±0.00	2.85±0.44	3.03±0.55	3.98±0.43	4.82±0.43	3.05±0.53	4.03±0.45	4.88±0.32
Image texture and sharpness κ value =0.802	1	1.07±0.25	1.83±0.53	3.10±0.48	1.03±0.18	1.00±0.00	3.13±0.57	4.60±0.50	2.90±0.61
	2	1.07±0.25	1.80±0.48	3.03±0.49	1.10±0.31	1.03±0.18	3.10±0.55	4.70±0.47	2.83±0.59
	Average*	1.07±0.25	1.82±0.50	3.07±0.48	1.07±0.25	1.02±0.13	3.12±0.56	4.65±0.48	2.87±0.60
Small vessels visibility κ value =0.809	1	1.10±0.31	1.40±0.50	3.10±0.48	1.97±0.49	1.07±0.25	3.17±0.59	4.63±0.49	2.83±0.38
	2	1.07±0.25	1.43±0.51	3.03±0.41	1.90±0.48	1.07±0.25	3.13±0.57	4.70±0.47	2.80±0.41
	Average*	1.08±0.28	1.42±0.50	3.07±0.46	1.93±0.48	1.07±0.25	3.15±0.58	4.67±0.48	2.82±0.39
Diagnostic confidence κ value =0.888	1	1.03±0.18	1.87±0.35	2.93±0.25	1.87±0.35	1.07±0.25	3.07±0.52	4.40±0.50	2.77±0.43
	2	1.03±0.18	1.90±0.31	2.93±0.37	1.83±0.38	1.07±0.25	3.00±0.53	4.43±0.51	2.80±0.41
	Average*	1.03±0.18	1.88±0.32	2.93±0.31	1.85±0.36	1.07±0.25	3.03±0.52	4.42±0.50	2.78±0.42

Data are represented as the mean ± standard deviation. *, P≤0.001. FBP, filtered back projection; AV, adaptive statistical iterative reconstruction-Veo; DL-L, deep learning image reconstruction-low; DL-M, deep learning image reconstruction-medium; DL-H, deep learning image reconstruction-high.