PhotonsEnergy MetabolismEnergy IntakeEnergy TransferTomography, Emission-Computed, Single-PhotonFluorescence Resonance Energy TransferSolar EnergyElementary ParticlesLightConservation of Energy ResourcesThermodynamicsMonte Carlo MethodRadiometryScattering, RadiationPhantoms, ImagingScintillation CountingRenewable EnergyRadiation DosageLinear Energy TransferParticle AcceleratorsComputer SimulationMicroscopy, Fluorescence, MultiphotonOrganotechnetium CompoundsQuantum TheoryBasal MetabolismEquipment DesignEnergy DrinksElectronsEquipment Failure AnalysisRadiopharmaceuticalsRelative Biological EffectivenessSpectrometry, FluorescenceTechnetium Tc 99m ExametazimeTime FactorsThallium RadioisotopesModels, MolecularModels, ChemicalCalorimetry, IndirectTechnetiumModels, BiologicalTelluriumKineticsBody WeightEatingRadiotherapy, High-EnergyTomography, Emission-ComputedRadiotherapy Planning, Computer-AssistedOximesLasersAlgorithmsModels, TheoreticalWaterFluorescenceSemiconductorsRadiotherapy DosagePhotosynthesisSpectrum AnalysisGamma CamerasIodine RadioisotopesBody CompositionProton TherapyDose-Response Relationship, RadiationTemperatureLuminescent MeasurementsOptical ProcessesProtonsOptics and PhotonicsTomography, OpticalRadioisotopesDietary ProteinsRadiationReproducibility of ResultsPhotometryImage Processing, Computer-AssistedLuminescenceCadmium CompoundsFluorescent DyesAdenosine TriphosphateX-RaysLutetiumBiophysical PhenomenaSynchrotronsSpectrometry, GammaProtein ConformationOxygen ConsumptionDietary FatsSensitivity and SpecificityPhotochemistryComputer-Aided DesignRhodopsinBiophysicsBrainCalorimetryNeutronsNitrogenIofetamineHeavy Ion RadiotherapyDiagnostic ImagingCarbonDietary Carbohydrates