2024
Tenecteplase for Stroke at 4.5 to 24 Hours with Perfusion-Imaging Selection
Albers G, Jumaa M, Purdon B, Zaidi S, Streib C, Shuaib A, Sangha N, Kim M, Froehler M, Schwartz N, Clark W, Kircher C, Yang M, Massaro L, Lu X, Rippon G, Broderick J, Butcher K, Lansberg M, Liebeskind D, Nouh A, Schwamm L, Campbell B. Tenecteplase for Stroke at 4.5 to 24 Hours with Perfusion-Imaging Selection. New England Journal Of Medicine 2024, 390: 701-711. PMID: 38329148, DOI: 10.1056/nejmoa2310392.Peer-Reviewed Original ResearchConceptsModified Rankin ScaleSymptomatic intracranial hemorrhageInternal carotid arteryMiddle cerebral arteryRankin ScalePlacebo groupTenecteplase groupIntracranial hemorrhageIncidence of symptomatic intracranial hemorrhageCerebral arteryIncidence of symptomatic intracerebral hemorrhageCarotid arteryPlacebo-controlled trialSymptomatic intracerebral hemorrhageEvidence of occlusionSafety populationDouble-blindPerfusion-imagingMedian timeClinical outcomesIntracerebral hemorrhagePlaceboPerfusion imagingPrimary outcomeOdds ratio
2015
In Acute Stroke, Can CT Perfusion-Derived Cerebral Blood Volume Maps Substitute for Diffusion-Weighted Imaging in Identifying the Ischemic Core?
Copen W, Morais L, Wu O, Schwamm L, Schaefer P, González R, Yoo A. In Acute Stroke, Can CT Perfusion-Derived Cerebral Blood Volume Maps Substitute for Diffusion-Weighted Imaging in Identifying the Ischemic Core? PLOS ONE 2015, 10: e0133566. PMID: 26193486, PMCID: PMC4508041, DOI: 10.1371/journal.pone.0133566.Peer-Reviewed Original ResearchConceptsComputed tomography perfusion imagingDiffusion-weighted magnetic resonance imagingCerebral blood volumeInfarct volumeSensitivity/specificityCBV mapsDWI lesionsIschemic coreCore lesionsDWI-positive patientsRegional cerebral blood volumeAcute ischemic strokeFinal infarct volumeTreatment of patientsTomography perfusion imagingPresence of infarctionMagnetic resonance imagingDiffusion-weighted imagingAcute strokeIschemic strokeSymptom onsetLesion volumeIndividual patientsInter-rater agreementPatients
2014
Exposing Hidden Truncation-Related Errors in Acute Stroke Perfusion Imaging
Copen W, Deipolyi A, Schaefer P, Schwamm L, González R, Wu O. Exposing Hidden Truncation-Related Errors in Acute Stroke Perfusion Imaging. American Journal Of Neuroradiology 2014, 36: 638-645. PMID: 25500309, PMCID: PMC7964314, DOI: 10.3174/ajnr.a4186.Peer-Reviewed Original ResearchConceptsPerfusion scanVolume of lesionsScan durationSymptom onsetAcute infarctsHemodynamic measurementsLesion reversalClinical trialsLesion volumePatient managementPerfusion MRPerfusion imagingInjected contrast agentPerfusion imagesPatient CTLesionsDurationMTTCTLong scan durationScansContrast agentsShort scan durationTmaxPerfusion estimates
2012
Economic Impact of Using Additional Diagnostic Tests to Better Select Patients With Stroke for Intravenous Thrombolysis in the United Kingdom
Earnshaw S, McDade C, Chapman A, Jackson D, Schwamm L. Economic Impact of Using Additional Diagnostic Tests to Better Select Patients With Stroke for Intravenous Thrombolysis in the United Kingdom. Clinical Therapeutics 2012, 34: 1544-1558. PMID: 22695225, DOI: 10.1016/j.clinthera.2012.05.004.Peer-Reviewed Original ResearchConceptsMagnetic resonance imagingMRI selectionUsual careDiagnostic testsFavorable outcomeIncremental cost-effectiveness ratioAcute stroke treatmentPreferred diagnostic testNumber of patientsAdditional diagnostic testsCost-effectiveness ratioDecision analytic modelCTP selectionIntravenous thrombolysisStroke onsetStroke treatmentPatient selectionUK patientsPenumbral patternPatient outcomesPerfusion CTPatient historyThrombolysisPatientsPerfusion imaging
2011
Imaging Stroke Patients with Unclear Onset Times
Wu O, Schwamm L, Sorensen A. Imaging Stroke Patients with Unclear Onset Times. Neuroimaging Clinics Of North America 2011, 21: 327-344. PMID: 21640303, PMCID: PMC3109317, DOI: 10.1016/j.nic.2011.02.008.Peer-Reviewed Original ResearchMeSH KeywordsCerebral AngiographyDiffusion Magnetic Resonance ImagingHumansImage EnhancementPerfusion ImagingStroke