Spearman correlation between signal intensity and fractional anisotropy of subplate layer and intermediate zone on postmortem MR imaging with gestational age, and also between signal intensity of the subplate layer and intermediate zone on antenatal MR imaging with gestational age
| Spearman Correlation with Gestational Age | ||
|---|---|---|
| Postmortem MR imaging | ||
| Signal intensity on T1 | Subplate layer | r = 0.66, P = .012 |
| Intermediate zone | r = −0.78, P = .001 | |
| Signal intensity on T2 | Subplate layer | No correlation,a P > .05 |
| Intermediate zone | r = 0.48, P = .086 | |
| Fractional anisotropy | Subplate layer | r = 0.55, P < .001 |
| Intermediate zone | r = −0.64, P < .0001 | |
| Antenatal MR imaging | ||
| Signal intensity on T2 | Subplate layer | No correlation,a P > .05 |
| Intermediate zone | r = 0.67, P = .003 |
a No measurable correlation, as signal intensity of the subplate layer remains constant.