Particle AcceleratorsRadiotherapy, High-EnergyRadiometryRadiotherapy DosageMonte Carlo MethodEnergy MetabolismEnergy IntakeEnergy TransferCone-Beam Computed TomographyHeavy IonsFluorescence Resonance Energy TransferRadiotherapy Planning, Computer-AssistedProton TherapyLinear Energy TransferSolar EnergyPhotonsConservation of Energy ResourcesRadiation DosagePhantoms, ImagingThermodynamicsEquipment DesignRelative Biological EffectivenessRadiotherapy, ConformalRenewable EnergyEquipment Failure AnalysisLasersBrachytherapyHeavy Ion RadiotherapyBasal MetabolismRadiotherapy, Intensity-ModulatedSynchrotronsProtonsEnergy DrinksX-RaysElectronsTransducersScintillation CountingComputer SimulationCalorimetry, IndirectDose-Response Relationship, RadiationBody WeightEatingThermoluminescent DosimetryComputer-Aided DesignScattering, RadiationRadiotherapyModels, MolecularModels, BiologicalAlgorithmsRadiography, DentalReproducibility of ResultsBody CompositionRadiographic Image EnhancementTime FactorsWaterRadiotherapy, Computer-AssistedModels, ChemicalOrgans at RiskDietary ProteinsCarbonFilm DosimetryModels, TheoreticalFiducial MarkersImaging, Three-DimensionalKineticsRadiation ProtectionRadiobiologyOxygen ConsumptionDietary FatsTemperatureAdenosine TriphosphateCalorimetryTomography, X-Ray ComputedIonsDietary CarbohydratesRadiotherapy, Image-GuidedFour-Dimensional Computed TomographyEnergy-Generating ResourcesProtein ConformationDose FractionationOptics and PhotonicsLenses