2024
Quantitative and Radiological Assessment of Post-cardiac-Arrest Comatose Patients with Diffusion-Weighted Magnetic Resonance Imaging
Van Roy S, Hsu L, Ho J, Scirica B, Fischer D, Snider S, Lee J. Quantitative and Radiological Assessment of Post-cardiac-Arrest Comatose Patients with Diffusion-Weighted Magnetic Resonance Imaging. Neurocritical Care 2024, 42: 541-550. PMID: 39164537, DOI: 10.1007/s12028-024-02087-y.Peer-Reviewed Original ResearchAnalysis of apparent diffusion coefficientRadiological assessmentMagnetic resonance imagingQuantitative analysis of apparent diffusion coefficientCardiac arrestSubgroup analysisComatose patientsMultimodal approach to prognosticationQuantitative ADC analysisResonance imagingMagnetic resonance imaging reportsDiffusion-weighted magnetic resonance imagingCerebral Performance CategoryDiffusion-weighted imagingAnoxic brain injuryApparent diffusion coefficientDeep gray matter structuresADC analysisRadiological evaluationRetrospective studyADC mapsClinical outcomesAnoxic injuryDiffusion abnormalitiesImaging ReportingClinical Significance of Diffusion-Weighted Brain MRI Lesions After TAVR Results of a Patient-Level Pooled Analysis
Lansky A, Grubman D, Dwyer M, Zivadinov R, Parise H, Moses J, Shah T, Pietras C, Tirziu D, Gambone L, Leon M, Nazif T, Messé S. Clinical Significance of Diffusion-Weighted Brain MRI Lesions After TAVR Results of a Patient-Level Pooled Analysis. Journal Of The American College Of Cardiology 2024, 84: 712-722. PMID: 39142725, DOI: 10.1016/j.jacc.2024.05.055.Peer-Reviewed Original ResearchConceptsTranscatheter aortic valve replacementClinical ischemic strokeAcute brain infarctionDW-MRIReceiver Operating CharacteristicIschemic strokeTranscatheter aortic valve replacement resultBrain infarctionPatient-level pooled analysisC-statisticBrain MRI lesionsAcute ischemic brain injuryDiffusion-weighted magnetic resonance imagingAortic valve replacementIndividual lesion volumesCore laboratory analysisIschemic brain injuryPredicting Ischemic StrokeMagnetic resonance imagingStroke Prevention TrialMRI lesionsValve replacementDW-MRI acquisitionsPatient-level dataPooled analysis
2022
Safety and performance of a novel cerebral embolic protection device for transcatheter aortic valve implantation: the PROTEMBO C Trial.
Jagielak D, Targonski R, Frerker C, Abdel-Wahab M, Wilde J, Werner N, Lauterbach M, Leick J, Grygier M, Misterski M, Erglis A, Narbute I, Witkowski AR, Adam M, Frank D, Gatto F, Schmidt T, Lansky AJ. Safety and performance of a novel cerebral embolic protection device for transcatheter aortic valve implantation: the PROTEMBO C Trial. EuroIntervention 2022, 18: 590-597. PMID: 35608032, PMCID: PMC10241272, DOI: 10.4244/eij-d-22-00238.Peer-Reviewed Original ResearchConceptsTranscatheter aortic valve implantationAortic valve implantationLesion volumeValve implantationTechnical successC trialSingle lesionCerebral embolic protection devicesPerformance endpointBrain diffusion-weighted magnetic resonance imagingLarge single lesionsPrimary safety endpointBrain lesion volumeDiffusion-weighted magnetic resonance imagingCerebral protection systemSingle-arm studyEmbolic protection devicesPrimary performance endpointRate of deathMagnetic resonance imagingTAVI casesTAVI patientsVARC-2Cerebrovascular eventsPrimary endpoint
2021
MR Perfusion in the Evaluation of Mechanical Thrombectomy Candidacy
Muddasani V, de Havenon A, McNally JS, Baradaran H, Alexander MD. MR Perfusion in the Evaluation of Mechanical Thrombectomy Candidacy. Topics In Magnetic Resonance Imaging 2021, 30: 197-204. PMID: 34397969, PMCID: PMC8371677, DOI: 10.1097/rmr.0000000000000277.Peer-Reviewed Original ResearchConceptsMagnetic resonance imagingIschemic strokeComputed tomographyMR perfusionCore infarctDiffusion-weighted magnetic resonance imagingPerfusion-diffusion mismatchDegree of ischemiaNoncontrast Computed TomographyImproved imaging techniquesSalvageable brainSuperior diagnostic informationIschemic penumbraSymptom onsetAcute evaluationAppropriate imagingPatient selectionStroke therapyThrombolytic therapyPoor outcomePrognostic valueLeading causeEffective treatmentBetter outcomesEarly identificationCellular and Extracellular White Matter Abnormalities in Obsessive-Compulsive Disorder: A Diffusion Magnetic Resonance Imaging Study
Maziero M, Seitz-Holland J, Cho K, Goldenberg J, Tanamatis T, Diniz J, Cappi C, Alice de Mathis M, Otaduy M, da Graça Morais Martin M, de Melo Felipe da Silva R, Shavitt R, Batistuzzo M, Lopes A, Miguel E, Pasternak O, Hoexter M. Cellular and Extracellular White Matter Abnormalities in Obsessive-Compulsive Disorder: A Diffusion Magnetic Resonance Imaging Study. Biological Psychiatry Cognitive Neuroscience And Neuroimaging 2021, 6: 983-991. PMID: 33862255, PMCID: PMC8502196, DOI: 10.1016/j.bpsc.2021.04.001.Peer-Reviewed Original ResearchConceptsObsessive-compulsive disorderClinical variablesControl subjectsLower fractional anisotropyFractional anisotropyWhite matterDiffusion-weighted magnetic resonance imagingMagnetic resonance imaging studyDiffusion measuresDiffusion magnetic resonance imaging studyWhite matter abnormalitiesTract-based spatial statisticsResonance imaging studyMagnetic resonance imagingFree-water imagingExtracellular abnormalities
2018
Isolated Upper Limb Weakness From Ischemic Stroke: Mechanisms and Outcome
Topcuoglu M, Rocha E, Siddiqui A, Mills B, Silva G, Schwamm L, Lamuraglia G, Singhal A. Isolated Upper Limb Weakness From Ischemic Stroke: Mechanisms and Outcome. Journal Of Stroke And Cerebrovascular Diseases 2018, 27: 2712-2719. PMID: 30033098, DOI: 10.1016/j.jstrokecerebrovasdis.2018.05.050.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overBrain IschemiaCarotid StenosisCerebral AngiographyComputed Tomography AngiographyDiffusion Magnetic Resonance ImagingDisability EvaluationEmbolismFemaleHeart DiseasesHumansMagnetic Resonance AngiographyMaleMiddle AgedMotor ActivityMotor CortexMuscle StrengthMuscle WeaknessMuscle, SkeletalPlaque, AtheroscleroticPrognosisRecovery of FunctionRetrospective StudiesRisk FactorsRupture, SpontaneousStrokeUpper ExtremityConceptsCarotid artery stenosisArtery stenosisCarotid stenosisSubcortical white matter infarctsClinical imaging featuresUpper extremity weaknessDiffusion-weighted magnetic resonance imagingUpper limb weaknessRecurrent stroke riskWhite matter infarctsMagnetic resonance imagingCardioembolic mechanismRecurrent strokeBrainstem infarctsExtremity weaknessMultiple infarctsIschemic strokeLimb weaknessStroke riskMotor stripStroke evaluationMean agePlaque ulcerationStroke mechanismInfarctsIntravenous thrombolysis in unwitnessed stroke onset: MR WITNESS trial results
Schwamm L, Wu O, Song S, Latour L, Ford A, Hsia A, Muzikansky A, Betensky R, Yoo A, Lev M, Boulouis G, Lauer A, Cougo P, Copen W, Harris G, Warach S, Investigators O. Intravenous thrombolysis in unwitnessed stroke onset: MR WITNESS trial results. Annals Of Neurology 2018, 83: 980-993. PMID: 29689135, PMCID: PMC6095471, DOI: 10.1002/ana.25235.Peer-Reviewed Original ResearchConceptsMagnetic resonance imagingSymptomatic intracranial hemorrhageLarge vessel occlusionIntravenous thrombolysisSymptom discoveryVessel occlusionAcute ischemic stroke patientsFluid-attenuated inversion recovery magnetic resonance imagingInversion recovery magnetic resonance imagingDiffusion-weighted magnetic resonance imagingIschemic stroke patientsStroke durationAnn NeurolSymptomatic edemaUnwitnessed onsetUnwitnessed strokeIntravenous alteplaseRankin ScaleSecondary outcomesStroke onsetSymptom onsetPrimary outcomeIntracranial hemorrhageProspective studyStroke patients
2017
Fine Motor Skill Mediates Visual Memory Ability with Microstructural Neuro-correlates in Cerebellar Peduncles in Prematurely Born Adolescents
Thomas AR, Lacadie C, Vohr B, Ment LR, Scheinost D. Fine Motor Skill Mediates Visual Memory Ability with Microstructural Neuro-correlates in Cerebellar Peduncles in Prematurely Born Adolescents. Cerebral Cortex 2017, 27: 322-329. PMID: 28108493, PMCID: PMC5939198, DOI: 10.1093/cercor/bhw415.Peer-Reviewed Original ResearchConceptsGrooved Pegboard TestFine motor skillsVisual-motor integrationRey-Osterrieth Complex Figure TestCerebellar peduncleFractional anisotropyBrain injuryGPT scoresMotor skillsBilateral middle cerebellar pedunclesNeonatal brain injuryDiffusion-weighted magnetic resonance imagingRight superior cerebellar peduncleAge 16 yearsSuperior cerebellar peduncleMiddle cerebellar peduncleBeery Visual Motor IntegrationMagnetic resonance imagingRisk of deficitsWhite matter microstructurePegboard TestPretermResonance imagingComplex Figure TestTerm controls
2016
Neurologic Complications of Unprotected Transcatheter Aortic Valve Implantation (from the Neuro-TAVI Trial)
Lansky AJ, Brown D, Pena C, Pietras CG, Parise H, Ng VG, Meller S, Abrams KJ, Cleman M, Margolis P, Petrossian G, Brickman AM, Voros S, Moses J, Forrest JK. Neurologic Complications of Unprotected Transcatheter Aortic Valve Implantation (from the Neuro-TAVI Trial). The American Journal Of Cardiology 2016, 118: 1519-1526. PMID: 27645761, DOI: 10.1016/j.amjcard.2016.08.013.Peer-Reviewed Original ResearchMeSH KeywordsAged, 80 and overAortic ValveAortic Valve StenosisBrainBrain IschemiaDiffusion Magnetic Resonance ImagingFemaleFollow-Up StudiesHumansIncidenceIntracranial EmbolismMalePostoperative ComplicationsPrognosisProspective StudiesRisk AssessmentRisk FactorsSurvival RateTranscatheter Aortic Valve ReplacementUnited StatesConceptsTranscatheter aortic valve implantationAortic valve implantationNeurologic injuryValve implantationNeurologic impairmentMagnetic resonance imaging lesionsCognitive AssessmentMontreal Cognitive Assessment scoreCerebral ischemic lesionsNew neurologic impairmentSubclinical cerebral infarctsDiffusion-weighted magnetic resonance imagingTotal lesion volumeCognitive Assessment scoreMontreal Cognitive AssessmentMagnetic resonance imagingCerebral embolizationCerebral infarctsNeurologic complicationsCerebral infarctionImaging lesionsMost patientsOvert strokeConsecutive patientsIschemic lesions
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 agreementPatientsA prospective randomized evaluation of the TriGuard™ HDH embolic DEFLECTion device during transcatheter aortic valve implantation: results from the DEFLECT III trial
Lansky AJ, Schofer J, Tchetche D, Stella P, Pietras CG, Parise H, Abrams K, Forrest JK, Cleman M, Reinöhl J, Cuisset T, Blackman D, Bolotin G, Spitzer S, Kappert U, Gilard M, Modine T, Hildick-Smith D, Haude M, Margolis P, Brickman AM, Voros S, Baumbach A. A prospective randomized evaluation of the TriGuard™ HDH embolic DEFLECTion device during transcatheter aortic valve implantation: results from the DEFLECT III trial. European Heart Journal 2015, 36: 2070-2078. PMID: 25990342, DOI: 10.1093/eurheartj/ehv191.Peer-Reviewed Original ResearchTranscatheter aortic valve implantationIschemic brain lesionsAortic valve implantationCerebral protectionNeurologic deficitsValve implantationBrain lesionsNew ischemic brain lesionsCerebral diffusion-weighted magnetic resonance imagingCognitive functionMontreal Cognitive Assessment scoreHealth Stroke ScaleNew neurologic deficitsDiffusion-weighted magnetic resonance imagingProspective Randomized EvaluationNormal cognitive functionCognitive Assessment scoreMagnetic resonance imagingSafety endpointStroke ScaleIII trialsControl subjectsTechnical successResonance imagingTriGuardSafety and performance of a novel embolic deflection device in patients undergoing transcatheter aortic valve replacement: results from the DEFLECT I study.
Baumbach A, Mullen M, Brickman AM, Aggarwal SK, Pietras CG, Forrest JK, Hildick-Smith D, Meller SM, Gambone L, den Heijer P, Margolis P, Voros S, Lansky AJ. Safety and performance of a novel embolic deflection device in patients undergoing transcatheter aortic valve replacement: results from the DEFLECT I study. EuroIntervention 2015, 11: 75-84. PMID: 25868876, DOI: 10.4244/eijy15m04_01.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overAlloysAortic ValveAortic Valve StenosisBrain IschemiaBrazilCardiac CatheterizationCognitionCognition DisordersDiffusion Magnetic Resonance ImagingEmbolic Protection DevicesEuropeFemaleHeart Valve ProsthesisHeart Valve Prosthesis ImplantationHumansIntracranial EmbolismMalePredictive Value of TestsProspective StudiesProsthesis DesignRisk FactorsSeverity of Illness IndexStrokeTime FactorsTreatment OutcomeUltrasonography, Doppler, TranscranialConceptsTranscatheter aortic valve replacementAortic valve replacementValve replacementNew cerebral ischemic lesionsCerebral diffusion-weighted magnetic resonance imagingCerebral ischemic lesionsDays post procedurePrimary safety endpointDiffusion-weighted magnetic resonance imagingMajor cerebral arteriesTotal lesion volumeMagnetic resonance imagingSafety endpointIschemic lesionsTAVR proceduresCerebral arteryCerebral circulationConsecutive subjectsPost procedureAortic archHistorical controlsLesion volumeResonance imagingDW-MRIPatients
2013
Challenges in cardiac device innovation: is neuroimaging an appropriate endpoint? Consensus from the 2013 Yale-UCL Cardiac Device Innovation Summit
Meller SM, Baumbach A, Voros S, Mullen M, Lansky AJ. Challenges in cardiac device innovation: is neuroimaging an appropriate endpoint? Consensus from the 2013 Yale-UCL Cardiac Device Innovation Summit. BMC Medicine 2013, 11: 257. PMID: 24330754, PMCID: PMC4029193, DOI: 10.1186/1741-7015-11-257.Peer-Reviewed Original ResearchConceptsTranscatheter aortic valve implantationAortic valve implantationLesion volumeCerebral eventsValve implantationNew lesionsClinical studiesSurrogate endpointsAppropriate endpointsPrimary efficacy endpointDiffusion-weighted magnetic resonance imagingCerebral protection devicesUseful surrogate endpointTotal lesion volumeMagnetic resonance imagingSample size limitationsEfficacy endpointClinical outcomesDevice successOngoing trialsNeurological protectionClinical eventsResonance imagingMRI valuesConsensus opinionClinical implications for diffusion‐weighted MRI brain lesions associated with transcatheter aortic valve replacement
Meller SM, Baumbach A, Brickman AM, Lansky AJ. Clinical implications for diffusion‐weighted MRI brain lesions associated with transcatheter aortic valve replacement. Catheterization And Cardiovascular Interventions 2013, 83: 502-508. PMID: 23460315, DOI: 10.1002/ccd.24904.Peer-Reviewed Original ResearchConceptsTranscatheter aortic valve replacementAortic valve replacementSilent strokeValve replacementCerebral embolic protection devicesDiffusion-weighted magnetic resonance imagingEmbolic protection devicesCerebral protection devicesMRI brain lesionsPotential therapeutic optionQuality of lifeLong-term cognitive consequencesMagnetic resonance imagingNeurological complicationsAortic stenosisImproved survivalNew lesionsEmbolic lesionsTherapeutic optionsBrain lesionsRisk candidatesCognitive declineResonance imagingClinical implicationsLesions
1999
Changes in the Diffusion of Water and Intracellular Metabolites after Excitotoxic Injury and Global Ischemia in Neonatal Rat Brain
Dijkhuizen R, de Graaf R, Tulleken K, Nicolay K. Changes in the Diffusion of Water and Intracellular Metabolites after Excitotoxic Injury and Global Ischemia in Neonatal Rat Brain. Cerebrovascular And Brain Metabolism Reviews 1999, 19: 341-349. PMID: 10078886, DOI: 10.1097/00004647-199903000-00012.Peer-Reviewed Original ResearchConceptsNeonatal rat brainMetabolite apparent diffusion coefficientsGlobal ischemiaApparent diffusion coefficientADC dropExcitotoxic injuryRat brainN-methyl-D-aspartate (NMDA) injectionAcute cerebral ischemiaDiffusion-weighted magnetic resonance imagingBrain metabolite levelsMagnetic resonance imagingBrain temperature changesTissue deoxygenationCerebral ischemiaNMDA injectionContralateral valuesCytotoxic edemaMetabolites taurineBrain tissue waterN-acetylaspartateIschemiaWater apparent diffusion coefficientResonance imagingEarly alterationsDiffusion-weighted MR Imaging: Diagnostic Accuracy in Patients Imaged within 6 Hours of Stroke Symptom Onset
González R, Schaefer P, Buonanno F, Schwamm L, Budzik R, Rordorf G, Wang B, Sorensen A, Koroshetz W. Diffusion-weighted MR Imaging: Diagnostic Accuracy in Patients Imaged within 6 Hours of Stroke Symptom Onset. Radiology 1999, 210: 155-62. PMID: 9885601, DOI: 10.1148/radiology.210.1.r99ja02155.Peer-Reviewed Original ResearchConceptsFinal clinical diagnosisDiffusion-weighted imagesDiffusion-weighted MR imagingDiffusion-weighted imagingConventional MR imagingMR imagingSymptom onsetBlinded reviewClinical diagnosisDiagnostic accuracyStroke symptom onsetDiffusion-weighted magnetic resonance imagingMagnetic resonance imagingT2-weighted MR imagingAcute strokeStroke symptomsFinal diagnosisTomographic scanStrokelike symptomsPatientsPatient recordsResonance imagingStrokeDiagnosisCT
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