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Perspectives in Vascular Surgery and Endovascular Therapy, Vol. 17, No. 1, 64-1-65 (2005)
DOI: 10.1177/153100350501700114

DWI Abnormalities and Clinical Characteristics in TIA Patients

Dion F. Graybeal, MD

D. Hal Unwin, MD

Department of Neurology and Mobility Foundation Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-8897

The authors conducted a study to determine if diffusionweighted imaging (DWI) is more sensitive and specific in evaluating lesions from transient ischemic attacks (TIA) than conventional computed tomography or magnetic resonance imaging (MRI). MRI including DWI was performed in 129 consecutive patients with TIA with 14 days after the episode. The frequency TIA-related DWI abnormalities was noted and compared with the clinical background of patients with and without DWI abnormalities. The TIA patients that had DWI abnormalities correlated with prolonged TIA duration and disturbance of higher brain function. Ischemia that is sustained and extensive may contribute to DWI abnormalities in TIA patients.

Key Words: transient ischemic attack • diffusion-weighted images • magnetic resonance imaging


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