Table 3.

Comparison of subjective image data in different percentages of ASIR-V and 40% ASIR

	Score
	Subjective noise	Visibility	Artefacts	Diagnosis acceptability
ASIR-V
10%	3.60 ± 0.50	3.77 ± 0.50	3.70 ± 0.47	4.37 ± 0.67
20%	3.63 ± 0.49	3.83 ± 0.59	3.77 ± 0.43	4.47 ± 0.57
30%	3.83 ± 0.59	4.07 ± 0.64a	3.93 ± 0.74	4.50 ± 0.51
40%	4.10 ± 0.61a	4.30 ± 0.54a	4.19 ± 0.48a	4.57 ± 0.50
50%	4.43 ± 0.57a	4.47 ± 0.57a	4.33 ± 0.48a	4.73 ± 0.45a
60%	4.63 ± 0.56a	4.63 ± 0.49a	4.50 ± 0.51a	4.87 ± 0.35a
70%	4.73 ± 0.45a	4.60 ± 0.50a	4.47 ± 0.51a	4.83 ± 0.38a
80%	4.80 ± 0.41a	3.93 ± 0.58	4.24 ± 0.45a	4.54 ± 0.49
90%	4.87 ± 0.35a	3.60 ± 0.62	3.97 ± 0.56	4.50 ± 0.51
100%	4.93 ± 0.25a	3.37 ± 0.56	3.90 ± 0.48	4.47 ± 0.51
40% ASIR	3.70 ± 0.47	3.73 ± 0.52	3.83 ± 0.38	4.33 ± 0.66
p valueb	<0.05	<0.05	<0.05	<0.05

ASIR, adaptive statistical iterative reconstruction; ASIR-V, adaptive statistical iterative reconstruction V.

^ap < 0.05 for paired comparison, ASIR-V series vs 40% ASIR.

^bp values for the one-way ANOVA test for all groups.