DenervationMuscle DenervationAutonomic DenervationSympathectomyUltrasonographyUltrasonicsUltrasonic TherapyHigh-Intensity Focused Ultrasound AblationUltrasonography, InterventionalMicrobubblesUltrasonography, PrenatalParasympathectomyTransducersSympathetic Nervous SystemSympathectomy, ChemicalMuscular AtrophyUltrasonography, DopplerUltrasonography, Doppler, ColorGanglionectomyMusclesPregnancyMuscle, SkeletalMicroscopy, AcousticSensitivity and SpecificityTime FactorsContrast MediaPressoreceptorsEndosonographyImaging, Three-DimensionalReproducibility of ResultsBlood PressureProspective StudiesKidneyEchoencephalographyNeuromuscular JunctionSonicationVagotomyNerve RegenerationFetal DiseasesUltrasonography, MammaryCarotid SinusGestational AgeSciatic NerveDogsElasticity Imaging TechniquesVagus NerveCranial Nerve DiseasesPhantoms, ImagingPregnancy Trimester, SecondAcousticsNorepinephrineFluorocarbonsUltrasonography, Doppler, DuplexReceptors, CholinergicDiaphragmSulfur HexafluorideBlood Flow VelocityCalcaneusUltrasonography, Doppler, Pulsed3-IodobenzylguanidineOxidopaminePhonophoresisPredictive Value of TestsAutonomic Nervous System DiseasesReflexParasympathetic Nervous SystemRats, Sprague-DawleyTreatment OutcomeCarotid BodyUltrasound, High-Intensity Focused, TransrectalImage Interpretation, Computer-AssistedObserver VariationEquipment DesignRats, Inbred StrainsHeart RateNeurons, EfferentRegional Blood FlowRats, WistarFeasibility StudiesMuscle ContractionHigh-Energy Shock WavesCarotid ArteriesHindlimbHeartElectric StimulationCoronary VesselsPregnancy Trimester, FirstRenal ArteryGlossopharyngeal NerveAdrenergic FibersRetrospective StudiesElectromyographyMotor NeuronsImage EnhancementFollow-Up StudiesPalpationHydroxydopaminesMagnetic Resonance ImagingNerve BlockChemoreceptor Cells