UltrasonographyPrenatal Exposure Delayed EffectsPrenatal DiagnosisPrenatal CareUltrasonography, PrenatalUltrasonography, Doppler, ColorPregnancyUltrasonography, DopplerSensitivity and SpecificityFetal DiseasesEndosonographyUltrasonography, Doppler, DuplexInfant, NewbornUltrasonography, Doppler, PulsedUltrasonography, MammaryDiagnostic ErrorsUltrasonography, InterventionalProspective StudiesGestational AgeDiagnostic ImagingReproducibility of ResultsPredictive Value of TestsTomography, X-Ray ComputedUltrasonography, Doppler, TranscranialDiagnostic Tests, RoutineRetrospective StudiesAmniocentesisFetusContrast MediaDiagnostic Techniques and ProceduresMaternal ExposureSulfur HexafluorideChorionic Villi SamplingPregnancy Trimester, SecondMagnetic Resonance ImagingAbortion, EugenicImaging, Three-DimensionalPregnancy OutcomePregnancy ComplicationsROC CurveUrographyRisk FactorsPregnancy Trimester, ThirdFalse Positive ReactionsScrotumCystsFollow-Up StudiesObserver VariationReagent Kits, DiagnosticBlood Flow VelocityPrenatal InjuriesFetal DevelopmentTime FactorsHydronephrosisBiopsyPregnancy Trimester, FirstBiopsy, NeedleEchoencephalographyCongenital AbnormalitiesAbnormalities, MultipleFalse Negative ReactionsPalpationMolecular Diagnostic TechniquesFetal Alcohol Spectrum DisordersTreatment OutcomeImage EnhancementAbdomenFetal DeathBirth WeightBiopsy, Fine-NeedleThyroid NoduleFetal HeartAbortion, TherapeuticPreoperative CareCohort StudiesOvarian CystsMaternal-Fetal ExchangeVaginaGenetic CounselingBiological MarkersCarotid Artery DiseasesLiver NeoplasmsPhysical ExaminationDiagnostic and Statistical Manual of Mental DisordersAbortion, InducedAbdominal InjuriesPrevalenceDiagnostic ServicesEvaluation Studies as TopicSeverity of Illness IndexGallbladderGenetic TestingCarotid ArteriesAngiographyPrognosisMetacarpophalangeal JointMaternal-Fetal RelationsToe JointDown SyndromePolyhydramnios