ROC curves illustrating the sensitivity and specificity of MB with different tumour types using different ADC thresholds. (A) medulloblastoma with ependymoma, (B) medulloblastoma with pilocytic astrocytoma, (C) ependymoma with piloctyic astrocytoma and (D) medulloblastoma with non-medulloblastoma (ependymoma and pilocytic astrocytoma combined).