UltrasonographyQuantitative Structure-Activity RelationshipUltrasonography, Doppler, ColorAlgorithmsUltrasonography, DopplerSupport Vector MachinesUltrasonography, PrenatalPattern Recognition, AutomatedArtificial IntelligenceSensitivity and SpecificityPliabilityReproducibility of ResultsPharmaceutical PreparationsSequence Analysis, ProteinModels, MolecularEndosonographyImage Interpretation, Computer-AssistedUltrasonography, Doppler, DuplexComputational BiologySoftwareDatabases, ProteinTerminology as TopicProteinsUltrasonography, Doppler, PulsedUltrasonography, MammaryModels, ChemicalComputer SimulationMolecular StructureUltrasonography, InterventionalDrug DesignInformation Storage and RetrievalUltrasonography, Doppler, TranscranialStructure-Activity RelationshipProtein ConformationSulfur HexafluorideLigandsModels, BiologicalTomography, X-Ray ComputedProspective StudiesContrast MediaModels, StatisticalPregnancyUrographyPredictive Value of TestsBlood Flow VelocityFetal DiseasesAmino Acid SequenceScrotumImaging, Three-DimensionalBinding SitesRetrospective StudiesCystsMolecular Sequence DataPalpationCarotid Artery DiseasesAbdomenPreoperative CareMagnetic Resonance ImagingToe JointThyroid NoduleCarotid ArteriesOvarian CystsGallbladderEchoencephalographyMetacarpophalangeal JointGestational AgeVaginaLiver NeoplasmsHydronephrosisObserver VariationAbdominal InjuriesImage EnhancementSplenic DiseasesTesticular DiseasesDiagnostic ImagingAuscultationFollow-Up StudiesGallbladder DiseasesTreatment OutcomeAngiographyCarotid Artery, CommonTransducersBiliary Tract DiseasesRectumInfant, NewbornBiopsy, NeedleFalse Positive ReactionsBiopsy, Fine-NeedleOvarian FollicleTunica MediaPrenatal DiagnosisTendinopathyCholecystographyPortal VeinTesticular HydroceleGallbladder NeoplasmsCholangiopancreatography, Endoscopic RetrogradePolypsUrinary TractRenal Colic