Table 2 Description of cancer cases used in the first session (training set) and the second session (an original BREAST test set).

From: Improving radiologist's ability in identifying particular abnormal lesions on mammograms through training test set with immediate feedback

Set

Case

Breast density*

Cancer type

Lesion size (mm)

Difficult value

Set

Case

Breast density*

Cancer type

Lesion size (mm)

Difficult value

1

1

C

Architectural distortion

26

0.18

2

1

C

Architectural distortion

20

0.39

1

2

C

Architectural distortion

11

0.04

2

2

C

Calcification

7

0.09

1

3

B

Architectural distortion

13

0.16

2

3

C

Calcification

9

0.25

1

4

B

Stellate/spiculated mass

10

0.11

2

4

C

Calcification

14

0.40

1

5

B

Stellate/spiculated mass

12

0.18

2

5

C

Calcification

15

0.32

1

6

C

Stellate/spiculated mass

12

0.07

2

6

C

Discrete mass

10

0.31

1

7

B

Stellate/spiculated mass

10

0.53

2

7

A

Asymmetric density (AD)

11

0.25

1

8

B

Stellate/spiculated mass

11

0.13

2

8

B

Asymmetric density (AD)

7

0.19

1

9

D

Stellate/spiculated mass

10

0.29

2

9

B

Asymmetric density (AD)

8

0.30

1

10

D

Stellate/spiculated mass

9

0.07

2

10

C

Asymmetric density (AD)

15

0.19

1

11

B

Stellate/spiculated mass

20

0.16

2

11

C

Stellate/spiculated mass

18

0.07

1

12

B

Stellate/spiculated mass

8

0.27

2

12

B

Stellate/spiculated mass

14

0.22

1

13

B

Stellate/spiculated mass

9

0.40

2

13

C

Stellate/spiculated mass

7

0.07

1

14

C

Stellate/spiculated mass

10

0.11

2

14

B

Stellate/spiculated mass

10

0.36

1

15

B

Stellate/spiculated mass

8

0.87

2

15

C

Stellate/spiculated mass

7

0.35

1

16

B

Stellate/spiculated mass

7

0.22

2

16

C

Stellate/spiculated mass

11

0.92

1

17

B

Stellate/spiculated mass

9

0.20

2

17

C

Stellate/spiculated mass

18

0.72

1

18

B

Stellate/spiculated mass

10

0.22

2

18

C

Stellate/spiculated mass

7

0.13

1

19

B

Stellate/spiculated mass with AD

12

0.36

2

19

C

Stellate/spiculated mass

15

0.15

1

20

B

Stellate/spiculated mass with AD

9

0.47

2

20

C

Stellate/spiculated mass with AD

10

0.34

1

21

C

Stellate/spiculated mass with AD

14

0.24

      

1

22

C

Stellate/spiculated mass with AD

7

0.18

      

Mean (all cancer types)

11.2

0.25

Mean (all cancer types)

11.7

0.30

Mean (stellate/spiculated mass ± AD)

10.4

0.27

Mean (stellate/spiculated mass ± AD)

11.7

0.33

  1. Difficult values were calculated from the BREAST database which were based on the rate of 147 Australian radiologists (45 in set 1 and 102 in set 2) failing to detect cancer locations on the mammograms (the higher values represent the more difficult cases).
  2. *A: fibrograndular tissue < 25%, B: fibroglandular tissue 25–50%, C: fibroglandular tissue 51–75%, D: fibroglandular tissue > 75%.
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