2023
Distinguishing Distinct Neural Systems for Proximal vs Distal Upper Extremity Motor Control After Acute Stroke
Lin D, Hardstone R, DiCarlo J, Mckiernan S, Snider S, Jacobs H, Erler K, Rishe K, Boyne P, Goldsmith J, Ranford J, Finklestein S, Schwamm L, Hochberg L, Cramer S. Distinguishing Distinct Neural Systems for Proximal vs Distal Upper Extremity Motor Control After Acute Stroke. Neurology 2023, 101: e347-e357. PMID: 37268437, PMCID: PMC10435065, DOI: 10.1212/wnl.0000000000207417.Peer-Reviewed Original ResearchConceptsDistal motor controlUpper extremity motor deficitsAcute strokeBarthel IndexMotor deficitsMotor controlAcute stroke patientsUpper extremity hemiparesisUpper extremity motor controlRegion of injuryLesion-symptom mappingMotor systemHealthy CNSDays poststrokeDistal injuriesRankin ScaleStroke onsetConsecutive patientsStroke patientsMotor scoresClinical syndromeFunctional outcomeIntact CNSPosterior aspectPrecentral gyrus
2006
Transient ischemic attack with infarction: A unique syndrome?
Ay H, Koroshetz W, Benner T, Vangel M, Wu O, Schwamm L, Sorensen A. Transient ischemic attack with infarction: A unique syndrome? International Congress Series 2006, 1290: 45-55. DOI: 10.1016/j.ics.2006.04.007.Peer-Reviewed Original ResearchTransient ischemic attackIschemic strokeIschemic attackSymptom durationDistinct prognostic featuresSeparate clinical syndromesRecurrent ischemic strokeMinor ischemic strokeUnderwent diffusion-weighted imagingDiffusion-weighted imagingInfarct volumeConsecutive patientsTIA ratePrognostic featuresTransient symptomsBrain syndromeClinical syndromeUnique syndromeInfarctionPatientsStrokeSyndromeSymptomsDurationInfarcts
2005
Transient ischemic attack with infarction: A unique syndrome?
Ay H, Koroshetz W, Benner T, Vangel M, Wu O, Schwamm L, Sorensen A. Transient ischemic attack with infarction: A unique syndrome? Annals Of Neurology 2005, 57: 679-686. PMID: 15852402, DOI: 10.1002/ana.20465.Peer-Reviewed Original ResearchConceptsTransient ischemic attackIschemic strokeIschemic attackSymptom durationDistinct prognostic featuresSeparate clinical syndromesRecurrent ischemic strokeMinor ischemic strokeUnderwent diffusion-weighted imagingDiffusion-weighted imagingInfarct volumeConsecutive patientsTIA ratePrognostic featuresTransient symptomsBrain syndromeClinical syndromeUnique syndromeInfarctionPatientsStrokeSyndromeSymptomsDurationInfarcts
2002
‘Footprints’ of Transient Ischemic Attacks: A Diffusion-Weighted MRI Study
Ay H, Oliveira-Filho J, Buonanno F, Schaefer P, Furie K, Chang Y, Rordorf G, Schwamm L, Gonzalez R, Koroshetz W. ‘Footprints’ of Transient Ischemic Attacks: A Diffusion-Weighted MRI Study. Cerebrovascular Diseases 2002, 14: 177-186. PMID: 12403950, DOI: 10.1159/000065682.Peer-Reviewed Original ResearchConceptsTransient ischemic attackFast fluid attenuated inversion recoveryDiffusion-weighted imagingIschemic attackDWI lesionsFocal neurologic symptomsHalf of patientsDiffusion-weighted MRI studiesFluid attenuated inversion recoveryAttenuated inversion recoveryBrain infarctionClinical characteristicsNeurologic symptomsConsecutive patientsIndependent predictorsIschemic injuryMotor symptomsRecent infarctionCerebrovascular abnormalitiesClinical syndromeVascular territoriesStroke mechanismMRI studiesPatientsInfarction
2001
Diagnostic Value of Apparent Diffusion Coefficient Hyperintensity in Selected Patients With Acute Neurologic Deficits
Schaefer P, Gonzalez R, Hunter G, Wang B, Koroshetz W, Schwamm L. Diagnostic Value of Apparent Diffusion Coefficient Hyperintensity in Selected Patients With Acute Neurologic Deficits. Journal Of Neuroimaging 2001, 11: 369-380. PMID: 11677876, DOI: 10.1111/j.1552-6569.2001.tb00065.x.Peer-Reviewed Original ResearchConceptsAcute neurologic deficitsMagnetic resonance imagingDiffusion-weighted imagingNeurologic deficitsMRI abnormalitiesClinical syndromeMRI T2 hyperintensityVenous sinus thrombosisIschemic brain injuryEvaluation of patientsSubset of patientsConventional magnetic resonance imagingApparent diffusion coefficient (ADC) mapsDiffusion coefficient mapsHIV encephalopathyHypertensive encephalopathyNonischemic etiologyPosterior leukoencephalopathySinus thrombosisCarotid endarterectomyT2 hyperintensityNeurologic conditionsVasogenic edemaBrain injuryDiffusion magnetic resonance imaging
1999
Diffusion-Weighted Imaging Identifies a Subset of Lacunar Infarction Associated With Embolic Source
Ay H, Oliveira-Filho J, Buonanno F, Ezzeddine M, Schaefer P, Rordorf G, Schwamm L, Gonzalez R, Koroshetz W. Diffusion-Weighted Imaging Identifies a Subset of Lacunar Infarction Associated With Embolic Source. Stroke 1999, 30: 2644-2650. PMID: 10582991, DOI: 10.1161/01.str.30.12.2644.Peer-Reviewed Original ResearchConceptsLacunar syndromeSmall infarctsIdentifiable causeClinical syndromeCareful pathological studyClassic lacunar syndromeDWI hyperintense lesionsSingle lacunar infarctionBrain stem lesionsDay of admissionDistinct clinical syndromeDiffusion-weighted imagingMultiple infarctionsEmbolic mechanismEmbolic sourceArtery territoryClinical characteristicsLacunar infarctionSecondary preventionConsecutive patientsAcute lesionsIndex lesionSuch infarctsEmergency roomPathological studies