ArtifactsPhantoms, ImagingImage EnhancementAlgorithmsImage Processing, Computer-AssistedReproducibility of ResultsImage Interpretation, Computer-AssistedRadiographic Image EnhancementSensitivity and SpecificityImaging, Three-DimensionalSignal Processing, Computer-AssistedMagnetic Resonance ImagingSignal-To-Noise RatioEcho-Planar ImagingCone-Beam Computed TomographySubtraction TechniqueMotionArchaeologyTomography, X-Ray ComputedRadiographic Image Interpretation, Computer-AssistedMetalsEquipment DesignBrainContrast MediaTime FactorsFourier AnalysisCardiac-Gated Imaging TechniquesMagnetic Resonance AngiographyMovementComputer SimulationDiagnostic ErrorsRespiratory-Gated Imaging TechniquesWavelet AnalysisEquipment Failure AnalysisRadiography, AbdominalHistory, AncientTomography, Emission-Computed, Single-PhotonProstheses and ImplantsAmplifiers, ElectronicFalse Positive ReactionsSurgical InstrumentsElectroencephalographyWhole Body ImagingUltrasonographyFixativesMultidetector Computed TomographyQuality Control