UltrasonographyUltrasonography, Doppler, ColorUltrasonography, DopplerUltrasonography, PrenatalEndosonographyUltrasonography, Doppler, DuplexUltrasonography, MammaryUltrasonography, Doppler, PulsedUltrasonography, InterventionalSensitivity and SpecificityTomography, X-Ray ComputedUltrasonography, Doppler, TranscranialSulfur HexafluorideProspective StudiesContrast MediaCombined Modality TherapyMagnetic Resonance ImagingReproducibility of ResultsPregnancyDiagnostic ImagingImaging, Three-DimensionalRetrospective StudiesPredictive Value of TestsUrographyTreatment OutcomeBlood Flow VelocityFetal DiseasesScrotumCystsImage EnhancementPreoperative CarePalpationLiver NeoplasmsCarotid Artery DiseasesFollow-Up StudiesAbdomenObserver VariationCarotid ArteriesTime FactorsThyroid NoduleGallbladderMetacarpophalangeal JointOvarian CystsToe JointEchoencephalographyAbdominal InjuriesGestational AgeVaginaAngiographyHydronephrosisRisk FactorsSplenic DiseasesBiopsy, NeedleTransducersTesticular DiseasesRectumGallbladder DiseasesInfant, NewbornBiopsy, Fine-NeedleImage Processing, Computer-AssistedFalse Positive ReactionsAuscultationTendinopathyBiliary Tract DiseasesCholangiopancreatography, Endoscopic RetrogradePancreatic NeoplasmsCholangiopancreatography, Magnetic ResonancePortal VeinCarotid Artery, CommonPrenatal DiagnosisImage Interpretation, Computer-AssistedPelvisIntraoperative CareRenal ColicOvarian FollicleTunica MediaGallbladder NeoplasmsBiopsyPositron-Emission TomographyWounds, NonpenetratingPhysical ExaminationCarotid StenosisUrinary TractCholecystographyNeoplasm StagingFalse Negative ReactionsTesticular HydroceleLaparotomyNeckUterusLaparoscopyAbdominal PainSynovitisPolypsCholelithiasisPulsatile FlowTunica IntimaPortographySeverity of Illness IndexVenous Thrombosis