UltrasonographyUltrasonography, PrenatalMagnetic Resonance ImagingSensitivity and SpecificityUltrasonicsPregnancyProspective StudiesUltrasonography, MammaryRetrospective StudiesMicrobubblesTomography, X-Ray ComputedFetal DiseasesUltrasonography, Doppler, ColorPredictive Value of TestsUltrasonography, InterventionalGestational AgeEchoencephalographyInfant, NewbornUltrasonic TherapyUltrasonography, DopplerReproducibility of ResultsAbortion, IncompleteBrainPrenatal DiagnosisImage Interpretation, Computer-AssistedContrast MediaFallopian Tube DiseasesAicardi SyndromeHigh-Intensity Focused Ultrasound AblationFollow-Up StudiesPregnancy Trimester, SecondPregnancy Trimester, FirstTreatment OutcomePregnancy OutcomeNeurologic ExaminationPregnancy Trimester, ThirdBrain DiseasesRisk FactorsChromosome AberrationsTomography, Emission-Computed, Single-PhotonDiffusion Magnetic Resonance ImagingObserver VariationRadiography, ThoracicPreoperative CareOrganotechnetium CompoundsElectrocardiographyLeukoencephalopathiesFertilization in VitroPolycystic Ovary SyndromeSeverity of Illness IndexTransducersImage Processing, Computer-AssistedEpilepsies, PartialPrognosisImage EnhancementBrain Damage, ChronicTechnetium Tc 99m MedronateMagnetic Resonance AngiographyElectroencephalographyTime FactorsAtrophyFatty LiverAbnormalities, MultipleBiopsyEarly DiagnosisEchocardiographyCerebral InfarctionCerebrovascular CirculationRadiopharmaceuticalsReference ValuesImaging, Three-DimensionalMicroscopy, AcousticNeuropsychological TestsCohort StudiesInfant, PrematureEndosonographyBreast NeoplasmsPrevalenceCoronary AngiographyAcute DiseaseCongenital AbnormalitiesEpilepsyLung DiseasesCase-Control StudiesCerebral AngiographyVaginal SmearsSonicationDisease ProgressionCognition DisordersTomography, Emission-ComputedChromosome DisordersLungIschemic Attack, TransientExercise TestRespiratory Function TestsHeartElasticity Imaging TechniquesBiological MarkersKaryotypingUltrasonography, Doppler, Duplex