Echo-Planar ImagingEcholocationImage EnhancementMagnetic Resonance ImagingChiropteraPhantoms, ImagingImage Interpretation, Computer-AssistedArtifactsReproducibility of ResultsContrast MediaUltrasonographyEchocardiographySensitivity and SpecificityImaging, Three-DimensionalEchocardiography, TransesophagealDoppler EffectAlgorithmsUltrasonicsMagnetic Resonance SpectroscopySignal-To-Noise RatioEchovirus 9Echovirus InfectionsTransducersGadolinium DTPAMagnetic Resonance Imaging, CineSignal Processing, Computer-AssistedSpectrophotometry, InfraredSpin LabelsObserver VariationMitral Valve StenosisRadio WavesBrainAuditory PerceptionFourier AnalysisSoundFeasibility StudiesAtrial Function, LeftEchocardiography, StressEchocardiography, DopplerMagnetic Resonance AngiographyTime FactorsDipyridamoleEnterovirus B, HumanHeart DiseasesFerrosoferric OxideMitral ValveHeart AtriaBlood Flow VelocityHeart VentriclesCreatinePattern Recognition, PhysiologicalStroke VolumeMeningitis, ViralProspective StudiesProtonsAtrioventricular NodeUltrasonography, MammaryVibrationMagnetite NanoparticlesSound SpectrographyNew MexicoThermographyPredictive Value of TestsVentricular Function, LeftCineradiographyComputer SimulationSound LocalizationChondromalacia PatellaeMotionAcoustic StimulationElectron Spin Resonance SpectroscopyWaterDobutamineVentricular Dysfunction, LeftEquipment DesignEchoencephalographyBoranesBrain MappingElectrocardiographySulfur HexafluorideHemosiderinEchocardiography, Doppler, ColorThrombosisReference ValuesUltrasonography, Doppler, ColorTachycardia, Atrioventricular Nodal ReentryGadoliniumPorpoisesUltrasonography, DopplerCholineThromboembolismCartilage, ArticularElasticity Imaging TechniquesThealesMitral Valve InsufficiencyVocalization, AnimalPhocoenaDolphinsSubtraction TechniqueRadar