Pulmonary EmbolismEmbolism, FatEmbolismEmbolism, ParadoxicalIntracranial EmbolismIntracranial Embolism and ThrombosisEmbolism, Amniotic FluidEmbolism, CholesterolVenous ThrombosisEmbolectomyDelayed DiagnosisVentilation-Perfusion RatioSensitivity and SpecificityAnticoagulantsTomography, X-Ray ComputedEarly DiagnosisPrenatal DiagnosisRetrospective StudiesThrombophlebitisVena Cava FiltersThromboembolismAcute DiseaseDiagnosisProspective StudiesEchocardiography, TransesophagealAngiographyTreatment OutcomeRisk FactorsFatal OutcomePredictive Value of TestsDiagnostic ErrorsForamen Ovale, PatentFollow-Up StudiesTomography, Spiral ComputedTime FactorsPulmonary ArteryVentricular Dysfunction, RightVenous ThromboembolismPhlebographyPrognosisIncidenceWarfarinThrombosisRecurrenceHeart Septal Defects, AtrialDiagnosis, Computer-AssistedMagnetic Resonance ImagingAutopsyBiopsyEchocardiographyHeparinHeart DiseasesEmbolism and ThrombosisPostoperative ComplicationsReproducibility of ResultsNursing DiagnosisFibrinolytic AgentsRisk AssessmentHemorrhagePregnancyThrombolytic TherapyIntraoperative ComplicationsCohort StudiesSeverity of Illness IndexVena Cava, InferiorFemoral VeinTechnetium Tc 99m Aggregated AlbuminPreimplantation DiagnosisInfant, NewbornBiopsy, NeedleCerebral InfarctionBiological MarkersThrombectomyHemoptysisHeparin, Low-Molecular-WeightRadiography, ThoracicXylemSyndromeAge FactorsPopliteal VeinPrevalenceHeart NeoplasmsROC CurveStrokeHeart AtriaPolymerase Chain ReactionMyxomaUltrasonographyAtrial FibrillationCase-Control StudiesRadionuclide ImagingUnited StatesDiagnostic ImagingFetal DiseasesFalse Positive ReactionsPulmonary InfarctionAlgorithmsRegistriesIliac VeinPerfusion Imaging