Peritumoral tensor metrics measurements in classic and atypical meningiomas
| Tensor Metric | Classic Meningioma | Atypical Meningioma | P Value | 95% CI |
|---|---|---|---|---|
| FA | 0.192 ± 0.070 | 0.191 ± 0.037 | .969 | −.058–.60 |
| FA ratios | 0.39 ± 0.16 | 0.37 ± 0.09 | .743 | −.115–.158 |
| ADC | 1.674 ± 0.271 | 1.544 ± 0.110 | .210 | −.086–.348 |
| ADC ratios | 2.09 ± 0.37 | 1.97 ± 0.19 | .423 | −.192–.433 |
| λ1 | 1.988 ± 0.255 | 1.863 ± 0.125 | .216 | −.084–.334 |
| λ1 ratios | 1.57 ± 0.29 | 1.47 ± 0.05 | .386 | −.130–.318 |
| λ2 | 1.653 ± 0.293 | 1.507 ± 0.129 | .203 | −.091–.382 |
| λ2 ratios | 2.36 ± 0.54 | 2.19 ± 0.52 | .512 | −.377–.724 |
| λ3 | 1.382 ± 0.321 | 1.273 ± 0.119 | .363 | −.146–.364 |
| λ3 ratios | 3.71 ± 1.82 | 3.50 ± 0.80 | .759 | −1.259–1.679 |
Note:—Data are the mean ± SD. Unit of λ1, λ2, λ3, and ADC values is × 10−3 mm2/s. Tensor metric ratios were calculated by dividing the mean values of each tensor metric in the affected hemisphere by that in the contralateral NAWM. CI indicates confidence interval; FA, fractional anisotropy; ADC, apparent diffusion coefficient.