Pulmonary EmbolismThrombophlebitisVentilation-Perfusion RatioVenous ThrombosisVena Cava FiltersPhlebographyAnticoagulantsPhenindioneEmbolectomyThromboembolismEmbolismAngiographyPopliteal VeinTricuspid ValvePulmonary ArteryIliac VeinTomography, X-Ray ComputedFemoral VeinTechnetium Tc 99m Aggregated AlbuminEmbolism, AirHeparinThrombosisXenon RadioisotopesRadionuclide ImagingFibrin Fibrinogen Degradation ProductsVena Cava, InferiorIntracranial EmbolismIntracranial Embolism and ThrombosisWarfarinVenous ThromboembolismAneurysmPostoperative ComplicationsUltrasonography, Doppler, DuplexFibrinFatal OutcomeVeinsHeparin, Low-Molecular-WeightTechnetiumTreatment OutcomeLegThrombolytic TherapyRetrospective StudiesEndocarditis, BacterialLungFollow-Up StudiesTime FactorsRecurrenceEmbolism, FatFibrinolytic AgentsProspective StudiesRisk FactorsDogsEmbolism, ParadoxicalEchocardiographyEmbolism, CholesterolAcute DiseaseUltrasonography, Doppler, TranscranialRisk AssessmentPredictive Value of TestsIncidenceDecompression SicknessNeoplastic Cells, CirculatingThrombectomyEchocardiography, TransesophagealInfarctionCerebral InfarctionMiddle Cerebral ArteryCarotid StenosisHematoxylinHeart Septal Defects, AtrialHeart Valve ProsthesisIntraoperative ComplicationsInfarction, Posterior Cerebral ArteryCarotid Artery DiseasesHeart NeoplasmsEndocarditisCerebral AngiographyStrokeWounds, GunshotEndarterectomy, Carotid