LutetiumLanthanoid Series ElementsMetals, Rare EarthSilicatesEuropiumTerbiumPhotosensitizing AgentsYtterbiumTomography Scanners, X-Ray ComputedDysprosiumPhotochemotherapyPhantoms, ImagingLanthanumSamariumPositron-Emission TomographyNeodymiumPraseodymiumActinoid Series ElementsThuliumLuminescenceEquipment DesignLuminescent AgentsGadoliniumHeterocyclic Compounds, 1-RingCoordination ComplexesCeriumMetals, AlkaliFluoroimmunoassayMacrocyclic CompoundsChelating Agents