Table 3 SNR, CNR and SI at 3.0 T with a full-dose and at 5.0 T with a half-dose

SNR

 Lesion

30 ± 8

48 ± 15

 < 0.001

 White matter

18 ± 3

30 ± 5

 < 0.001

 Grey matter

11 ± 2

22 ± 5

 < 0.001

CNR

 Lesion/White matter

36 ± 18

69 ± 43

 < 0.001

 Lesion/Grey matter

40 ± 17

103 ± 49

 < 0.001

 Gray matter/White matter

15 ± 2

33 ± 4

 < 0.001

SI difference

 Lesion

430 ± 180

675 ± 333

 < 0.001

 White matter

44 ± 11

51 ± 11

0.068

 Grey matter

43 ± 12

48 ± 13

0.115