Table 4.

Post Kruskal–Wallis test at subjective image quality

Subjective image quality	Routine-dose 40% ASIR vs lower dose protocol					Reduced-dose 40% ASIR vs reduced-dose ASIR-V
	Filtered back projection	40% ASIR	30% ASIR-V	50% ASIR-V	70% ASIR-V	30% ASIR-V	50% ASIR-V	70% ASIR-V
Subjective noise	<0.001	<0.001	<0.001	0.057	Same	0.001	<0.001	<0.001
Sharpness	<0.001	<0.002	0.996	0.980	<0.001	0.068	0.134	0.004
Artefact	<0.001	<0.001	0.890	Same	Same	0.002	<0.001	<0.001
Diagnostic acceptability	<0.001	0.328	Same	Same	<0.001	0.326	0.326	0.199

ASIR, adaptive statistical iterative reconstruction.