2016
Acute Stroke Imaging Research Roadmap III Imaging Selection and Outcomes in Acute Stroke Reperfusion Clinical Trials
Warach S, Luby M, Albers G, Bammer R, Bivard A, Campbell B, Derdeyn C, Heit J, Khatri P, Lansberg M, Liebeskind D, Majoie C, Marks M, Menon B, Muir K, Parsons M, Vagal A, Yoo A, Alexandrov A, Baron J, Fiorella D, Furlan A, Puig J, Schellinger P, Wintermark M, Ansari S, Aviv R, Barreto A, Broderick J, Christensen S, Davis S, Demchuk A, Dippel D, Donnan G, Fiebach J, Fiehler J, Houser G, Grotta J, Hacke W, Hill M, Hsia A, Jovin T, Köhrmann M, Latour L, Leigh R, Lees K, Lev M, Marshall R, Mocco J, Nadareishvili Z, Nogueira R, Olivot J, Palesch Y, Pedraza S, Sasaki M, Saver J, Savitz S, Schwamm L, Simpkins A, Smith W, Thijs V, Thomalla G, Wechsler L, Wu O, Zaharchuk G, Zaidat O. Acute Stroke Imaging Research Roadmap III Imaging Selection and Outcomes in Acute Stroke Reperfusion Clinical Trials. Stroke 2016, 47: 1389-1398. PMID: 27073243, PMCID: PMC6058693, DOI: 10.1161/strokeaha.115.012364.Peer-Reviewed Original ResearchConceptsClinical trialsEndovascular trialsImaging Working GroupFinal infarct volumeLarge vessel occlusionProspective clinical trialsImaging sessionAmerican SocietyOptimal imaging methodInfarct volumeStroke neurologistsEndovascular treatmentPooled analysisTherapy clinical trialsVessel occlusionImaging selectionGood collateralsNeurovascular imagingConsensus recommendationsUS FoodDrug AdministrationNeurological disordersPooled dataTrialsNational Institute
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
2012
Infarct Volume Is a Pivotal Biomarker After Intra-Arterial Stroke Therapy
Yoo A, Chaudhry Z, Nogueira R, Lev M, Schaefer P, Schwamm L, Hirsch J, González R. Infarct Volume Is a Pivotal Biomarker After Intra-Arterial Stroke Therapy. Stroke 2012, 43: 1323-1330. PMID: 22426317, DOI: 10.1161/strokeaha.111.639401.Peer-Reviewed Original ResearchMeSH KeywordsAge FactorsAgedAged, 80 and overBiomarkersBrain InfarctionCohort StudiesDatabases, FactualFemaleFibrinolytic AgentsHumansInfusions, IntravenousMagnetic Resonance ImagingMaleMiddle AgedNeuroimagingPredictive Value of TestsProspective StudiesRetrospective StudiesStrokeThrombolytic TherapyTissue Plasminogen ActivatorTomography, X-Ray ComputedTreatment OutcomeConceptsFinal infarct volumeIntra-arterial therapyAcute ischemic strokeInfarct volumeFunctional outcomeBetter outcomesIschemic strokePoor outcomeAnterior circulation acute ischemic strokeScale scoreHealth Stroke Scale scoreMedian admission National InstitutesMedian final infarct volumesLong-term functional outcomeIntra-arterial stroke therapyAdmission National InstitutesProximal artery occlusionStroke Scale scoreOnly independent predictorRankin Scale scoreArtery occlusionProspective cohortRankin ScaleIndependent predictorsClinical outcomes
2004
ASPECTS on CTA Source Images Versus Unenhanced CT
Coutts S, Lev M, Eliasziw M, Roccatagliata L, Hill M, Schwamm L, Pexman J, Koroshetz W, Hudon M, Buchan A, Gonzalez R, Demchuk A. ASPECTS on CTA Source Images Versus Unenhanced CT. Stroke 2004, 35: 2472-2476. PMID: 15486327, DOI: 10.1161/01.str.0000145330.14928.2a.Peer-Reviewed Original ResearchConceptsAlberta Stroke Program Early CT ScoreCTA-SI Alberta Stroke Program Early CT ScoreCT angiography source imagesBaseline Alberta Stroke Program Early CT ScoreIschemic changesFavorable outcomeNCCT-Alberta Stroke Program Early CT ScoreAcute ischemic strokeFinal infarct sizeFinal infarct volumeFavorable patient outcomesNormal CT scanRate ratioCTA source imagesM2 occlusionsInfarct volumeIschemic strokeProximal occlusionSymptom onsetClinical outcomesMedian timeCT scoreInfarct sizePatient outcomesBaseline NCCT
2002
Predicting cerebral ischemic infarct volume with diffusion and perfusion MR imaging.
Schaefer P, Hunter G, He J, Hamberg L, Sorensen A, Schwamm L, Koroshetz W, Gonzalez R. Predicting cerebral ischemic infarct volume with diffusion and perfusion MR imaging. American Journal Of Neuroradiology 2002, 23: 1785-94. PMID: 12427640, PMCID: PMC8185825.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overBlood Flow VelocityBrain IschemiaCerebral InfarctionCerebrovascular CirculationDiffusion Magnetic Resonance ImagingFalse Positive ReactionsFemaleFollow-Up StudiesHumansIschemic Attack, TransientMagnetic Resonance AngiographyMaleMiddle AgedObserver VariationPredictive Value of TestsSensitivity and SpecificityTime FactorsConceptsCerebral blood flowCerebral blood volumeFinal infarct volumeInfarct volumeDW imagingLesion growthAcute ischemic stroke symptomsHemodynamic imagesAcute ischemic infarctionIschemic infarct volumeInitial clinical assessmentFinal discharge diagnosisFinal infarct sizeHours of onsetIschemic stroke symptomsPerfusion MR imagingPerfusion-weighted imagesAcute strokeIschemic infarctionStroke symptomsAcute infarctionAcute lesionsDischarge diagnosisInfarct sizeAltered perfusion
2001
Utility of Perfusion-Weighted CT Imaging in Acute Middle Cerebral Artery Stroke Treated With Intra-Arterial Thrombolysis:
Lev M, Segal A, Farkas J, Hossain S, Putman C, Hunter G, Budzik R, Harris G, Buonanno F, Ezzeddine M, Chang Y, Koroshetz W, Gonzalez R, Schwamm L. Utility of Perfusion-Weighted CT Imaging in Acute Middle Cerebral Artery Stroke Treated With Intra-Arterial Thrombolysis:. Stroke 2001, 32: 2021-2028. PMID: 11546891, DOI: 10.1161/hs0901.095680.Peer-Reviewed Original ResearchConceptsFinal infarct volumeAcute middle cerebral artery strokeNIH Stroke Scale scoreMiddle cerebral artery strokeMCA stem occlusionIntra-arterial thrombolysisStroke Scale scoreComplete recanalizationClinical outcomesInfarct volumeLesion volumeArtery strokeOutcome groupAdmission NIH Stroke Scale scoreInitial NIH Stroke Scale scoreScale scoreEarly complete recanalizationFinal lesion volumeUtility of perfusionPoor outcome groupModified Rankin ScalePoor clinical outcomeRankin ScaleStroke onsetConsecutive patientsCT Perfusion Imaging versus MR Diffusion Weighted Imaging: Prediction of Final Infarct Size in Hyperacute Stroke
Berzin T, Lev M, Goodman D, Koroshetz W, Hunter G, Hamberg L, Buonanno F, Putman C, Budzik R, Eskey C, Schwamm L, Gonzalez R. CT Perfusion Imaging versus MR Diffusion Weighted Imaging: Prediction of Final Infarct Size in Hyperacute Stroke. Stroke 2001, 32: 317-317. DOI: 10.1161/str.32.suppl_1.317.Peer-Reviewed Original ResearchFinal infarct sizeCT perfusion imagingInfarct sizeStroke onsetHyperacute strokeDWI volumePerfusion imagingFinal infarct volumeBrain CT scanningHyperacute stroke patientsSame patient populationMR-Diffusion Weighted ImagingSteady-state administrationCT angiographic imagesDiffusion-Weighted ImagingDWI imagingInfarct volumeConsecutive patientsIndependent predictorsIschemic volumeStroke patientsPatient populationCTP imagingBlood volumePatients
1998
Regional Ischemia and Ischemic Injury in Patients With Acute Middle Cerebral Artery Stroke as Defined by Early Diffusion-Weighted and Perfusion-Weighted MRI
Rordorf G, Koroshetz W, Copen W, Cramer S, Schaefer P, Budzik R, Schwamm L, Buonanno F, Sorensen A, Gonzalez G. Regional Ischemia and Ischemic Injury in Patients With Acute Middle Cerebral Artery Stroke as Defined by Early Diffusion-Weighted and Perfusion-Weighted MRI. Stroke 1998, 29: 939-943. PMID: 9596239, DOI: 10.1161/01.str.29.5.939.Peer-Reviewed Original ResearchMeSH KeywordsAcute DiseaseAdultAgedAged, 80 and overArterial Occlusive DiseasesBrain IschemiaCerebral ArteriesCerebral InfarctionCerebrovascular CirculationCerebrovascular DisordersDiffusionFemaleHumansMagnetic Resonance AngiographyMagnetic Resonance ImagingMaleMiddle AgedPerfusionReperfusion InjuryConceptsPerfusion-weighted imagingMiddle cerebral artery strokeDiffusion-weighted imagingCerebral blood volumeMCA strokeArtery strokeMR angiographyCBV abnormalityRegional ischemiaAcute middle cerebral artery strokeInitial diffusion-weighted imagingAcute stroke syndromeDistal branch occlusionDWI lesion volumeInitial DWI lesionMCA stem occlusionGroup 2 patientsMRI techniquesFinal infarct sizeFinal infarct volumeHours of onsetIntravenous contrast bolusAbnormal tissue perfusionProgression of infarctionPerfusion-Weighted MRI