Table 4.

Summary of the Misclassification Spread across Different Tumor Types, Data Sites, and Scanner Types.

Tumor type	Ependymoma	Medulloblastoma	Pilocytic astrocytoma
Misclassified cases (n)	1	3–5	1–2
Site of misclassified cases	Alder Hey Children's Hospital (Liverpool)	Birmingham Children's Hospital The Great North Children's Hospital (Newcastle) Alder Hey Children's Hospital (Liverpool)	Birmingham Children's Hospital Alder Hey Children's Hospital (Liverpool) Nottingham Children's Hospital
Scanner manufacturer	Philips	Philips, Siemens	Philips