Table 2 Number and proportion of images affected by artifacts with the STD algorithm, number and proportion of images for which the NEW algorithm either completely removed or at least reduced the artifact intensity obtained using the scores by the majority of readers, and number and proportion of images for which the NEW algorithm did not correct the artifact

Artifact occurrence with the STD algorithm

412/526

78.3

285/526

54.2

288/526

54.8

 CC

 227/412

 55.1

 114/285

 40.0

 115/288

 39.9

 MLO

 185/412

 44.9

 171/285

 60.0

 173/288

 60.1

Artifact removal by the NEW algorithm

348/412

84.5

240/285

84.2

164/288

56.9

Artifact reduction by the NEW algorithm

50/412

12.1

37/285

13.0

83/288

28.8

Artifact reduction failure by the NEW algorithm

14/412

3.4

8/285

2.8

41/288

14.2