Table 3 Results of the difference in ranking for the subjective image quality assessment.

From: Assessment of image quality and impact of deep learning-based software in non-contrast head CT scans

Site

Method

Rater 1

Rater 2

Rater 3

Rater 4

W

p

Site I

FBP vs. FBP + PS

− 0.58

− 0.85

0.31

− 0.42

0.33

0.02

FBP + PS vs. I3

− 0.06

− 0.79

0.15

− 0.25

0.29

0.11

I3 + PS vs. I3

0.27

− 0.06

0.12

0

0.29

0.12

Site II

FBP vs. FBP + PS

− 0.09

− 0.62

0.2

0.05

0.26

0.4

FBP + PS vs. I3

0.94

− 1

0.8

− 0.04

0.13

1

I3 + PS vs. I3

0.17

− 0.02

0.07

0.04

0.25

0.47

Site III

FBP vs. FBP + PS

− 0.31

− 0.73

0.47

0.04

0.23

0.67

  1. Positive values for the raters indicate that the images of the first method were rated higher. W indicates the concordance of the ratings computed by Kendall’s W. A p-value less than 0.05 indicates agreement and is shown in bold.
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