Radiology, InterventionalRadiography, InterventionalUltrasonographyFluoroscopyMagnetic Resonance Imaging, InterventionalPulsed Radiofrequency TreatmentRadiation ProtectionUltrasonography, InterventionalCardiac CatheterizationRadiodermatitisHemostatic TechniquesPuncturesCatheterizationAngiographyTomography, X-Ray ComputedAngioplasty, Balloon, Laser-AssistedEquipment DesignUltrasonography, Doppler, ColorRadiation DosageTreatment OutcomeImaging, Three-DimensionalInfarctionAtherectomy, CoronaryStentsBody BurdenContrast MediaAngioplasty, Balloon, CoronaryUltrasonography, DopplerRetrospective StudiesRadiometrySurgery, Computer-AssistedFemoral ArteryPhantoms, ImagingUltrasonography, PrenatalAngioplasty, BalloonCoronary AngiographyProspective StudiesEmbolization, TherapeuticAngioplastyTime FactorsRadiation InjuriesCatheter AblationImage Processing, Computer-AssistedFollow-Up StudiesMagnetic Resonance ImagingPostoperative ComplicationsEndosonographyUltrasonography, Doppler, DuplexUltrasonography, MammaryUltrasonography, Doppler, PulsedSensitivity and SpecificityCoronary DiseaseUltrasonography, Doppler, TranscranialSulfur HexafluoridePregnancyReproducibility of ResultsPredictive Value of TestsUrographyBlood Flow VelocityFetal DiseasesScrotumPreoperative CareCystsCarotid Artery DiseasesPalpationAbdomenLaparoscopySurgical Procedures, Minimally InvasiveCarotid ArteriesSurgical Procedures, OperativeVaginaLiver NeoplasmsRisk FactorsOvarian CystsToe JointThyroid NoduleGallbladderGestational AgeVascular Surgical ProceduresBiopsy, NeedleObserver VariationInfant, NewbornDiagnostic ImagingEchoencephalographyMetacarpophalangeal JointImage EnhancementFalse Positive ReactionsAbdominal InjuriesEndoscopyRectumHydronephrosisSplenic DiseasesIntraoperative CareEvaluation Studies as TopicCholangiopancreatography, Endoscopic RetrogradeTesticular DiseasesBiliary Tract DiseasesAuscultationGallbladder DiseasesPrenatal Diagnosis