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AJNR - American Journal of Neuroradiology

Published ahead of print on November 1, 2007
doi: 10.3174/ajnr.A0802

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Comparison of Optimized and Standard Diffusion-Weighted Imaging at 1.5T for the Detection of Acute Lesions in Patients with Transient Ischemic Attack

A. Bertrand^a, C. Oppenheim^a, C. Lamy^b, S. Rodrigo^a, O. Naggara^a, J.L. Mas^b and J.F. Meder^a

^a Department of Neuroradiology, Université Paris Descartes, Centre Hospitalier Sainte-Anne, Paris, France
^b Department of Neurology, Université Paris Descartes, Centre Hospitalier Sainte-Anne, Paris, France

View larger version (81K): [in this window] [in a new window]   Fig 1. A 59-year-old man referred for aphasia and sensorimotor weakness of the right face and upper limb that lasted 90 minutes. Optimized DWI showed 2 punctate cortical lesions in the left middle cerebral artery territory, not visible on standard DWI. These lesions were located in the left primary sensory motor cortex, corroborating clinical symptoms.

View larger version (69K): [in this window] [in a new window]   Fig 2. A 51-year-old man referred for ataxia and left facial paresthesia that lasted 20 minutes. Standard DWI demonstrated a subtle punctuate hyperintensity in the brain stem. Optimized DWI confirmed a recent ischemic brain stem lesion and revealed additional bright dots in the right cerebral peduncle, matching clinical symptoms.