LutetiumYttriumYttrium RadioisotopesSilicatesYttrium IsotopesPhotosensitizing AgentsTomography Scanners, X-Ray ComputedNeodymiumLasers, Solid-StateLaser TherapyPhotochemotherapyPhantoms, ImagingPositron-Emission TomographyLight CoagulationErbiumRadioimmunotherapyInjections, Intra-ArticularPosterior CapsulotomyYtterbiumEquipment DesignMetals, Rare EarthScandiumZirconiumIndium Radioisotopes