Table 1. Statistical analysis results of the features.
| Features | High grade | Low grade | P value |
|---|---|---|---|
| Mean + SD | Mean + SD | ||
| T1W+C | <0.0001 | ||
| nrCBV | 3.762 + 2.234 | 1.482 + 0.624 | <0.0001 |
| nMTT | 1.483 + 0.779 | 1.007 + 0.115 | 0.0007 |
| nrCBF | 2.653 + 1.514 | 1.571 + 0.895 | 0.0003 |
| nT0 | 1.048 + 0.212 | 1.030 + 0.120 | 0.9773 |
| nTTP | 1.088 + 0.168 | 1.007 + 0.051 | 0.0014 |
| Cho/Cr | 1.169 + 0.522 | 0.565 + 0.179 | 0.0005 |
| NAA/Cr | 0.357 + 0.186 | 0.680 + 0.340 | 0.0044 |
| Lac/Cr | 109.598 + 206.765 | 1.462 + 2.919 | 0.0001 |
| Lip13/Cr | 37.762 + 34.745 | 1.795 + 2.680 | <0.0001 |
SD, standard deviation; T1W+C, contrast enhanced T1-weighted imaging; nrCBV, normalized regional cerebral blood volume; nMTT, normalized mean transit time; nrCBF, normalized regional cerebral blood flow; nT0, normalized T0; nTTP, normalized time to peak; Cho, choline; NAA, N-acetyl aspartate; Lac, lactate; Lip13, lipid at 1.3 ppm; Cr, creatine.