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NEUROLOGY 1998;51:1465-1469
© 1998 American Academy of Neurology

MRI of the occipital cortex, red nucleus, and substantia nigra during visual aura of migraine

K.M.A. Welch, MD, Y. Cao, PhD, S. Aurora, MD, G. Wiggins, MD and E. M. Vikingstad, BS

From the Headache and NMR Research Centers, Department of Neurology, Henry Ford Health Sciences Center, Case Western Reserve University, Detroit, MI.

Address correspondence and reprint requests to DrA. Welch, University of Kansas School of Medicine, 3901 Rainbow Blvd., Kansas City, KS 66160.

The authors report a patient with migraine in whom they measured brain oxygenation indirectly during a visual aura by means of T2-weighted MRI. An aura of left homonomous quadrantanopia was accompanied by increased T2-weighted contrast intensity of bilateral regions in the occipital cortex, and the red nucleus and substantia nigra bilaterally. The mechanisms of these changes remain to be determined, but in this patient the migraine aura was associated with probable hyperoxia and not cerebal ischemia.

Supported in part by National Institutes of Health grant P50 NS32399.

Received April 24, 1998. Accepted in final form July 17, 1998.




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