Table 2.
ADC histogram parameters of the IDHwt tumors using different ROI methods.
| Values (×10−6 mm2/s) | The tumor ROI | The tumor ROI excluding cystic and necrotic portions | Test values | p values |
|---|---|---|---|---|
| ADCmean | 1646.10 ± 402.18 | 1368.54 ± 254.39 | -2.333a | 0.027 |
| ADCmin | 518.50 ± 226.12 | 485.38 ± 195.34 | -0.443a | 0.661 |
| P5 ADC | 972.53 ± 207.95 | 880.19 ± 168.79 | -1.379a | 0.178 |
| P10 ADC | 1066.38 ± 239.79 | 966.75 ± 184.50 | -1.317a | 0.198 |
| P25 ADC | 1281.41 ± 306.36 | 1142.50 ± 220.39 | -1.472a | 0.151 |
| P50 ADC | 1606.94 ± 442.95 | 1368.63 ± 267.23 | -1.843a | 0.075 |
| P75 ADC | 2022.41 ± 580.95 | 1593.25 ± 304.42 | -2.617a | 0.016 |
| P90 ADC | 2298.56 ± 620.70 | 1767.56 ± 331.19 | -2.848a | 0.009 |
| P95 ADC | 2403.84 ± 609.61 | 1864.00 ± 342.97 | -3.085a | 0.005 |
| ADCmax | 3606.75 ± 1159.31 | 2450.25 ± 417.17 | -3.755a | 0.001 |
| ADCmode | 1616.19 ± 583.11 | 1517.06 ± 533.69 | -0.502a | 0.620 |
| Kurtosis | -0.527 (-1.027, 0.480) | −0.401 ± 0.429 | -0.075b | 0.956 |
| Skewness | 0.434 ± 0.689 | 0.065 ± 0.310 | -1.957a | 0.060 |
| StDev | 388.630 (343.670, 689.601) | 303.055 ± 72.511 | -2.902b | 0.003 |
| Inhomogenity | 0.278 ± 0.069 | 0.220 ± 0.033 | -3.047a | 0.006 |
| Range | 3087.31 ± 1130.76 | 1966.56 ± 389.39 | -3.799a | 0.001 |
| Entropy | 3.968 ± 0.224 | 4.082 ± 0.199 | -1.527a | 0.137 |
a t value; bZ value.