Course of mean fractional anisotropy, left and right hemisphere (n = 16)
| Variable | T0, Mean ± SD | T1, Mean ± SD | Δ, % | P* | T2, Mean ± SD | Δ (%) | P† | P‡ |
|---|---|---|---|---|---|---|---|---|
| CB | ||||||||
| Right | .173 ± .023 | .162 ± .019 | −6.1 | .000 | .160 ± .017 | −7.1 | .007 | .001 |
| Left | .174 ± .021 | .160 ± .023 | −8.0 | .000 | .158 ± .019 | −8.7 | .001 | .000 |
| FWM | ||||||||
| Right | .470 ± .069 | .456 ± .058 | −2.5 | .008 | .441 ± .056 | −5.6 | .007 | .000 |
| Left | .463 ± .060 | .449 ± .058 | −3.0 | .003 | .442 ± .070 | −4.8 | .015 | .011 |
| CR | ||||||||
| Right | .489 ± .031 | .473 ± .040 | −3.3 | .001 | .459 ± .036 | −6.2 | .000 | .000 |
| Left | .492 ± .043 | .470 ± .053 | −4.6 | .001 | .466 ± .049 | −5.2 | .000 | .000 |
Note:—CB indicates cerebellar white matter; FWM, frontal white matter; CR, corona radiata; T0, at baseline; T1, at the end of radiotherapy; T2, at 6 weeks after radiotherapy.
* P values are from Wilcoxon test (comparison between T0 and T1).
† P values are from Wilcoxon test (comparison between T0 and T2).
‡ P values are from Friedman test (comparison across time).