T1 (s)

T2 (ms)

 

Cho

tCr-CH3

NAA

Cho

tCr-CH3

NAA

3T

1.06±0.11

1.38±0.13

1.38±0.13

170±18a

151±15

262±37

7T

1.24±0.21

1.78±0.23

1.73±0.22

131±16

121±12

170±11

P

0.072

0.021

0.004

<0.001

<0.001

<0.001

aN=9. One data point was excluded because the variance of the fit residue was larger than 10%
Table 1: T1 and T2 relaxation values of Cho, tCr-CH3 and NAA at 3T and 7T (mean ± SD). A non-parametric Wilcoxon rank sum test was used for the statistical analysis.