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 SamplingAbortion, EugenicImaging, Three-DimensionalReproducibility of ResultsPregnancy ComplicationsUltrasonography, Doppler, TranscranialFetal DevelopmentPregnancy Trimester, FirstPrenatal InjuriesPredictive Value of TestsTomography, X-Ray ComputedBlood Flow VelocityBirth WeightAbortion, TherapeuticMaternal-Fetal ExchangeMaternal-Fetal RelationsRisk FactorsFetal Alcohol Spectrum DisordersGenetic CounselingMicroscopy, AcousticFollow-Up StudiesObserver VariationMaternal AgeDown SyndromeScrotumCystsPalpationTime FactorsPregnant WomenImage EnhancementChromosome DisordersUrographyCarotid ArteriesPregnancy, High-RiskAbdomenTreatment OutcomeCarotid Artery DiseasesInfant, Low Birth WeightMothersFetal Growth RetardationElasticity Imaging TechniquesPregnancy TrimestersMaternal BehaviorOvarian Cysts