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AJNR - American Journal of Neuroradiology

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Assessment of Transient Ischemic Attack with Diffusion- and Perfusion-Weighted Imaging

Lucas Restrepo^a, Michael A. Jacobs^b, Peter B. Barker^b and Robert J. Wityk^a

^a Department of Neurology, Johns Hopkins Hospital, Baltimore, Maryland
^b Department of Radiology, Johns Hopkins Hospital, Baltimore, Maryland

View larger version (104K): [in a new window]   FIG 1. Brain MR imaging of case 1. Left, Initial images show faint DW imaging hyperintensities in the right temporal lobe (top) and frontoparietal junction (bottom). Right, Follow-up images obtained 6 days later show slight expansion of the DW imaging abnormalities but complete resolution of the PW imaging defects.

View larger version (134K): [in a new window]   FIG 2. Brain MR imaging of case 2. Top, upper cut images; bottom, lower cut images.

View larger version (110K): [in a new window]   FIG 3. Brain MR imaging of case 3. The MRA shows severe stenosis of the left intracranial ICA (arrow) and tandem stenosis involving both A1 and A2 segments of the ACAs (arrowheads).