Table 2 SUL_max, SUL_mean, SUL_peak for normal tissue and the prostate tumor (mean ± range). Next the absolute difference and the relative difference between scan 1 and scan 2. The within-subject coefficient of variation (wCV) in %, the coefficient of repeatability (RC), both in % as in absolute SUL values

15.1 ± 3.3 (10.1, 23.1)

0.5 ± 1.2 (− 1.4, 2.6)

4.1 ± 9.0 (− 9, 21)

11.3

2.3

17.0

9.6 ± 1.9 (5.8,13.7)

0.2 ± 1.2 (− 1.9, 2.3)

3.9 ± 11.9 (− 15, 26)

8.4

2.3

23.4

1.8 ± 0.3 (1.0, 2.5)

0.0 ± 0.3 (− 0.6, 0.8)

 − 0.2 ± 18.6 (− 31, 38)

13.2

0.6

36.5

0.9 ± 0.1 (0.5, 1.2)

0.0 ± 0.1 (− 0.3, 0.1)

0.2 ± 12.2 (− 29, 25)

9.6

0.2

26.6

7.2 ± 1.5 (5.0, 9.6)

 − 0.5 ± 1.3 (− 5.5, 1.3)

 − 7.1 ± 15.8 (− 63, 21)

6.5

1.4

31.1

3.7 ± 0.8 (2.3, 5.5)

0.3 ± 0.4 (− 1.1, 0.6)

 − 3.4 ± 9.2 (− 25, 13)

11.2

0.8

17.9

42.5 ± 6.9 (27.1, 56.7)

0.3 ± 4.5 (− 6.4, 9.4)

1.0 ± 11.3 (− 17, 29)

8.6

8.5

22.2

19.5 ± 3.8 (11.6, 28.1)

 − 0.5 ± 2.4 (− 5.2, 3.4)

 − 2.4 ± 15.0 (− 25, 13)

8.0

4.7

23.9

1.9 ± 0.4 (1.2, 2.8)

0.0 ± 0.4 (− 0.6, 0.8)

2.6 ± 18.2 (− 28, 44)

12.9

0.7

35.6

0.9 ± 0.2 (0.4, 1.1)

0.0 ± 0.1 (− 0.2, 0.3)

1.8 ± 14.3 (− 29, 35)

10.7

0.3

29.7

1.5 ± 0.4 (0.9, 2.5)

0.1 ± 0.4 (− 0.7, 0.8)

3.1 ± 25.2 (− 48, 45)

17.8

0.8

49.4

0.5 ± 0.2 (0.3, 0.9)

0.0 ± 0.1 (− 0.2, 0.1)

 − 6.0 ± 14.0 (− 33, 17)

10.0

0.2

27.7

12.5 ± 8.9 (3.3, 43.7)

 − 1.6 ± 8.9 (− 40.2, 12.4)

2.0 ± 58.1 (− 112, 113)

41.1

17.2

113.8

7.7 ± 5.2 (1.9, 32.2)

 − 0.3 ± 6.4 (− 7.7, 22.6)

9.2 ± 62.6 (− 108, 128)

43.9

12.3

121.8

10.7 ± 7.3 (3.1, 32.3)

 − 0.2 ± 1.1 (− 2.2, 2.5)

 − 0.5 ± 11.2 (− 18, 21)

7.9

2.2

21.9

6.2 ± 3.5 (2.6, 13.3)

0.0 ± 0.6 (− 1.2, 1.4)

1.2 ± 9.2 (− 15, 19)

6.5

1.1

18.1

5.9 ± 4.2 (1.7, 17.8)

 − 0.2 ± 1.2 (− 3.3, 1.9)

 − 1.0 ± 19.7 (− 43, 42)

13.8

2.4

38.4

5.4 ± 1.3 (2.1, 12.5)

0.2 ± 0.6 (− 1.0, 2.4)

5.7 ± 17.1 (− 19.5, 27.6)

9.9

1.6

27.5