Table 2. ADC histogram data derived from tumour volumetric segmentation in H3 K27M histone-mutant glioma (ADC values displayed as × 10-3 mm2/s).
Case number | ADC2nd centile | ADC5th centile | ADC10th centile | ADC5th/NAWM ratio | ADCmedian | ADCmean | ADCmean/NAWM ratio | Standard deviation (SD) | Kurtosis | Skewness |
---|---|---|---|---|---|---|---|---|---|---|
1 | 0.69 | 0.73 | 0.77 | 0.92 | 0.93 | 0.93 | 1.16 | 0.14 | 14.88 | 2.00 |
2 | 0.72 | 0.77 | 0.81 | 1.01 | 4.32 | 3.54 | 5.72 | 1.99 | −1.38 | −0.37 |
3 | 0.62 | 0.73 | 0.83 | 0.93 | 1.21 | 1.23 | 1.53 | 0.35 | 3.15 | 0.98 |
4 | 0.51 | 0.55 | 0.59 | 0.93 | 0.69 | 0.71 | 1.16 | 0.12 | 13.90 | 2.31 |
5 | 0.71 | 0.75 | 0.79 | 1.03 | 0.99 | 1.08 | 1.36 | 0.31 | 5.89 | 1.97 |
6 | 0.85 | 0.93 | 1.04 | 1.20 | 1.36 | 1.34 | 1.74 | 0.23 | 1.18 | 0.87 |
7 | 0.67 | 0.71 | 0.76 | 0.98 | 0.91 | 0.93 | 1.27 | 0.22 | 55.37 | 5.90 |
8 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
9 | 0.76 | 0.82 | 0.88 | 1.01 | 1.09 | 1.72 | 1.35 | 0.94 | −1.51 | 0.56 |
10 | 0.84 | 0.90 | 0.96 | 1.09 | 1.23 | 1.24 | 1.48 | 0.22 | 1.84 | 0.54 |
11 | 1.03 | 1.15 | 1.28 | 1.41 | 1.85 | 1.81 | 2.27 | 0.38 | −0.60 | −0.25 |
12 | 0.88 | 0.94 | 0.99 | 1.24 | 1.30 | 1.35 | 1.71 | 0.31 | 0.49 | 0.74 |
13 | 0.77 | 0.84 | 0.89 | 1.00 | 1.08 | 1.11 | 1.28 | 0.21 | 8.03 | 1.88 |
14 | 0.66 | 0.71 | 0.76 | 0.91 | 0.92 | 1.02 | 1.19 | 0.33 | 6.57 | 2.31 |
15 | 0.81 | 0.86 | 0.94 | 1.19 | 1.40 | 1.37 | 1.94 | 0.33 | −0.40 | 0.12 |
Mean (SD) | 0.75 (0.13) | 0.81 (0.14) | 0.88 (0.16) | 1.06 (0.15) | 1.38 (0.89) | 1.38 (0.69) | 1.80 (1.17) | 0.43 (0.49) | 7.67 (14.72) | 1.40 (1.58) |
ADC, apparent diffusion coefficient; SD, standard deviation.