UltrasonicsUltrasonography, PrenatalUltrasonic TherapyMicrobubblesPrenatal DiagnosisFetal DiseasesPregnancyUltrasonographySonicationPrenatal Exposure Delayed EffectsPelvimetrySulfur HexafluoridePrenatal CareHigh-Intensity Focused Ultrasound AblationPolyhydramniosSoundTransducersGestational AgePregnancy Trimester, SecondGastroschisisInfant, NewbornAbnormalities, MultipleOligohydramniosAcousticsCongenital AbnormalitiesAmniotic Band SyndromeFluorocarbonsEchoencephalographyContrast MediaPregnancy Trimester, ThirdAmniocentesisPregnancy OutcomeAutopsyHernia, UmbilicalUltrasonography, Doppler, ColorSpinal DysraphismAbortion, InducedHydronephrosisFetusFetal DeathFetal HeartDilatation, PathologicUltrasonography, DopplerSensitivity and SpecificityRetrospective StudiesUltrasonography, InterventionalHeart Defects, CongenitalProspective StudiesSyndromeKaryotypingEndosonographyMagnetic Resonance ImagingUltrasonography, Doppler, DuplexUltrasonography, Doppler, PulsedUltrasonography, MammaryMaternal ExposureChorionic Villi SamplingImaging, Three-DimensionalAbortion, EugenicReproducibility of ResultsPregnancy ComplicationsUltrasonography, Doppler, TranscranialFetal DevelopmentPregnancy Trimester, FirstPredictive Value of TestsPrenatal InjuriesTomography, X-Ray ComputedWorld Health OrganizationBlood Flow VelocityBirth WeightRisk FactorsTime FactorsAbortion, TherapeuticMaternal-Fetal ExchangeMaternal-Fetal RelationsFetal Alcohol Spectrum DisordersFollow-Up StudiesGenetic CounselingObserver VariationMicroscopy, AcousticMaternal AgeDown SyndromeScrotumPalpationCystsPregnant WomenTreatment OutcomeOrganizationsImage EnhancementChromosome DisordersUrographyCarotid ArteriesAbdomenPregnancy, High-RiskImage Processing, Computer-AssistedMothersCohort StudiesCarotid Artery DiseasesInfant, Low Birth WeightFetal Growth Retardation