UltrasonographyUltrasonicsUltrasonic TherapyHigh-Intensity Focused Ultrasound AblationUltrasonography, InterventionalMicrobubblesUltrasonography, PrenatalTransducersUltrasonography, DopplerUltrasonography, Doppler, ColorMicroscopy, AcousticPregnancySensitivity and SpecificityContrast MediaEndosonographyImaging, Three-DimensionalEchoencephalographyReproducibility of ResultsSonicationProspective StudiesFetal DiseasesUltrasonography, MammaryGestational AgeElasticity Imaging TechniquesPhantoms, ImagingPregnancy Trimester, SecondAcousticsFluorocarbonsUltrasonography, Doppler, DuplexSulfur HexafluorideCalcaneusUltrasonography, Doppler, PulsedPhonophoresisPredictive Value of TestsBlood Flow VelocityUltrasound, High-Intensity Focused, TransrectalImage Interpretation, Computer-AssistedObserver VariationEquipment DesignHigh-Energy Shock WavesPregnancy Trimester, FirstImage EnhancementPalpationFeasibility StudiesCoronary VesselsTomography, X-Ray ComputedRetrospective StudiesTreatment OutcomeCarotid ArteriesPrenatal DiagnosisInfant, NewbornPregnancy Trimester, ThirdTime FactorsImage Processing, Computer-AssistedMagnetic Resonance ImagingAdnexal DiseasesFollow-Up StudiesUltrasonography, Doppler, TranscranialFetal HeartMagnetic Resonance Imaging, InterventionalCrown-Rump LengthStentsCarotid Artery DiseasesTunica IntimaCoronary Artery DiseaseCoronary AngiographyPoint-of-Care SystemsBiopsy, NeedleSoundUterine HemorrhageCarotid StenosisDoppler EffectPlaque, AtheroscleroticEquipment Failure AnalysisAbdomenRegional Blood FlowPerineumBrachial ArteryPregnancy OutcomePelvic FloorFemoral ArteryAlgorithmsEchocardiographyDiagnostic ImagingNeedlesThermographySurgery, Computer-AssistedEchocardiography, Four-DimensionalRisk FactorsAdnexa UteriHeadFetusCystsFetal DevelopmentTunica MediaSignal Processing, Computer-AssistedNerve BlockMiniaturizationBiopsy, Fine-NeedleMaternal-Fetal Relations