Table 1 Some details of the patients included in the study including age, and histogram parameters for the three main tumour types.
From: Classification of paediatric brain tumours by diffusion weighted imaging and machine learning
Tumour Type | Pilocytic Astrocytoma | Ependymoma | Medulloblastoma |
|---|---|---|---|
Number of Patients | 36 | 26 | 55 |
Field Strength Scanned at: 1.5 T/3 T | 30/6 | 21/5 | 46/9 |
Age /years | 7.1 ± 4.4 | 4.7 ± 5.0 | 6.3 ± 3.5 |
Age Range | 1.2–13.8 | 1.0–16.3 | 1.5–14.5 |
Mean ADC (10−3 mm2 s−1) | 1.656 ± 0.290 | 1.126 ± 0.155 | 0.870 ± 0.154 |
ADC Variance | 9.49 × 10–8 | 7.89 × 10–8 | 1.00 × 10–7 |
ADC Skew | 0.70 ± 0.83 | 1.34 ± 1.13 | 1.40 ± 0.60 |
ADC Kurtosis | 3.08 ± 3.50 | 5.95 ± 10.09 | 3.81 ± 3.24 |
10th quantile ADC (10−3 mm2 s−1) | 1.345 ± 0.266 | 0.869 ± 0.128 | 0.587 ± 0.109 |
25th quantile ADC (10−3 mm2 s−1) | 1.480 ± 0.261 | 0.970 ± 0.135 | 0.681 ± 0.138 |
50th quantile ADC (10−3 mm2 s−1) | 1.628 ± 0.291 | 1.084 ± 0.151 | 0.806 ± 0.138 |
75th quantile ADC (10−3 mm2 s−1) | 1.799 ± 0.343 | 1.229 ± 0.171 | 0.989 ± 195 |
ADC range (10−3 mm2 s−1) | 1.222–2.240 | 0.865–1.400 | 0.523 ± 1.230 |
