ArtifactsPhantoms, ImagingImage EnhancementAlgorithmsImage Processing, Computer-AssistedReproducibility of ResultsImage Interpretation, Computer-AssistedRadiographic Image EnhancementImaging, Three-DimensionalSensitivity and SpecificitySignal Processing, Computer-AssistedMagnetic Resonance ImagingSignal-To-Noise RatioEcho-Planar ImagingCone-Beam Computed TomographySubtraction TechniqueMotionArchaeologyRadiographic Image Interpretation, Computer-AssistedTomography, X-Ray ComputedMetalsEquipment DesignContrast MediaFourier AnalysisBrainCardiac-Gated Imaging TechniquesMagnetic Resonance AngiographyRespiratory-Gated Imaging TechniquesMovementDiagnostic ErrorsWavelet AnalysisComputer SimulationRadiography, AbdominalEquipment Failure AnalysisAmplifiers, ElectronicTomography, Emission-Computed, Single-PhotonProstheses and ImplantsFalse Positive ReactionsSurgical InstrumentsWhole Body ImagingFixativesElectroencephalographyUltrasonographyMultidetector Computed TomographyHistory, Ancient