Image EnhancementRadiographic Image EnhancementImage Processing, Computer-AssistedAlgorithmsImage Interpretation, Computer-AssistedRadiographic Image Interpretation, Computer-AssistedImaging, Three-DimensionalReproducibility of ResultsContrast MediaSubtraction TechniqueTomography, X-Ray ComputedSensitivity and SpecificityPattern Recognition, AutomatedDiagnostic ImagingGadolinium DTPAObserver VariationBrain