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NEUROLOGY 1985;35:470
© 1985 American Academy of Neurology

Ischemic lesions of the occipital cortex and optic radiations

Positron emission tomography

Thomas M. Bosley, MD, Alan C. Rosenquist, PhD, Michael Kushner, MD, Allan Burke, MD, Alan Stein, PhD, Robert Dann, BS, Walter Cobbs, MD, Peter J. Savino, MD, Norman J. Schatz, MD, Abass Alavi, MD and Martin Reivich, MD

Cerebrovascular Research Center of the Department of Neurology (Drs. Bosley, Kushner, Burke, Cobbs, Reivich), Departments of Radiology (Drs. Stein and Alavi and Mr. Dann), and Anatomy (Dr. Rosenquist), University of Pennsylvania, and the Neuro-Opthalmology Service (Drs. Bosley, Savino, Schatz), Wills Eye Hospital, Philadelphia, PA.

We used 18-F-fluoro-2-deoxyglucose positron emission tomography (PET) and computed tomography (CT) to study eight patients with homonymous hemianopias or quadrantanopias due to ischemic lesions of the visual pathways. Four patients with ischemic damage to all or part of the occipital lobe had decreased glucose metabolism in the affected region. Three patients with ischemic damage limited to the optic radiations had decreased glucose metabolism in the portion of striate cortex appropriate for the visual field defect. Changes in glucose metabolism frequently occurred in the undamaged ipsilateral thalamus and visual association areas.

Address correspondence and reprint requests to Dr. Bosley, Neuro-Opthalmology Service, Wills Eye Hospital, Ninth and Walnut Streets, Philadelphia, PA 19107.

Supported by USPHS Program Project Grant NS-14867-05.

Accepted for publication August 9, 1984.




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