Image EnhancementRadiographic Image EnhancementImage Processing, Computer-AssistedAlgorithmsImage Interpretation, Computer-AssistedImaging, Three-DimensionalReproducibility of ResultsRadiographic Image Interpretation, Computer-AssistedRadiotherapy Planning, Computer-AssistedSensitivity and SpecificityContrast MediaNormal DistributionPattern Recognition, AutomatedTomography, X-Ray ComputedStatistical DistributionsTime FactorsPloidiesBrainMagnetic Resonance ImagingSubtraction Technique