Craniospinal IrradiationMedulloblastomaCranial IrradiationCerebellar NeoplasmsProton TherapyInfratentorial NeoplasmsNeuroectodermal Tumors, PrimitiveRadiotherapy DosageNeuroectodermal TumorsCentral Nervous System NeoplasmsRadiotherapy, High-EnergyRadiation InjuriesBrain NeoplasmsRadiotherapy, Intensity-ModulatedSpineRadiotherapy, ConformalCombined Modality TherapyRadiotherapyProtonsLomustineLiterature, ModernWhole-Body IrradiationNeurocytomaDose-Response Relationship, RadiationRetrospective StudiesUltraviolet RaysSupratentorial NeoplasmsPinealomaSpinal Cord NeoplasmsVincristineMeningeal NeoplasmsSpinal NeoplasmsCerebrospinal Fluid PressureGerminomaLeukemia, Myeloid, AcuteLeukemia, MyeloidBone MarrowLeukemiaCytarabineChromosomes, Human, 21-22 and YLeukemia, Myelogenous, Chronic, BCR-ABL Positive