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
1999
Diffusion- and Perfusion-Weighted Imaging in Vasospasm After Subarachnoid Hemorrhage
Rordorf G, Koroshetz W, Copen W, Gonzalez G, Yamada K, Schaefer P, Schwamm L, Ogilvy C, Sorensen A. Diffusion- and Perfusion-Weighted Imaging in Vasospasm After Subarachnoid Hemorrhage. Stroke 1999, 30: 599-605. PMID: 10066858, DOI: 10.1161/01.str.30.3.599.Peer-Reviewed Original ResearchConceptsRelative cerebral blood flowRelative cerebral blood volumeAngiographic vasospasmIschemic injurySymptomatic vasospasmNeurological deficitsClinical signsSevere angiographic vasospasmCerebral tissue perfusionEarly ischemic injurySubarachnoid hemorrhage patientsCerebral blood flowIntravenous contrast bolusPerfusion-Weighted ImagingCerebral blood volumeDWI abnormalitiesAsymptomatic patientsHemodynamic abnormalitiesNormal angiogramsAngiographic spasmImaging abnormalitiesIschemic lesionsHemorrhage patientsSubarachnoid hemorrhageClinical management
1998
Time Course of Lesion Development in Patients With Acute Stroke
Schwamm L, Koroshetz W, Sorensen A, Wang B, Copen W, Budzik R, Rordorf G, Buonanno F, Schaefer P, Gonzalez R. Time Course of Lesion Development in Patients With Acute Stroke. Stroke 1998, 29: 2268-2276. PMID: 9804633, DOI: 10.1161/01.str.29.11.2268.Peer-Reviewed Original ResearchConceptsApparent diffusion coefficient ratioDWI lesion volumeInitial DWI lesion volumeAcute ischemic strokeT2 lesion volumeLesion volumeNeurological outcomeIschemic strokeDiffusion-weighted imaging (DWI) lesion volumeHealth Stroke Scale scoreFinal lesion volumeImaging Lesion VolumeMaximum lesion volumePatients' neurological outcomeProgressive ischemic injurySecond scanStroke Scale scoreAcute stroke patientsSecondary pathophysiological processesAcute strokeStroke onsetSymptom onsetNeurological examinationInitial imagingIschemic injury