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Stroke, Vol 20, 952-956, Copyright © 1989 by American Heart Association

ARTICLES

Vertebrobasilar insufficiency revealed by xenon-133 inhalation SPECT

F Delecluse, P Voordecker and C Raftopoulos
Department of Nuclear Medicine, Erasmus Hospital, Free University of Brussels, Belgium.

A study of cerebral and cerebellar blood flow reactivity to acetazolamide by xenon-133-inhalation single photon emission computed tomography (133Xe SPECT) was carried out in a patient with bouts of transient basilar ischemia, whose neurological examination, computed tomographic scan, and auditory evoked potentials were normal. Though the patient was symptom-free at the time of the study, 133Xe SPECT demonstrated vertebrobasilar insufficiency by showing an impaired vasodilatory response in both the occipital lobes and the right cerebellar hemisphere. Three weeks later, the patient suffered an extensive stroke in these same areas. We therefore suggest that this method could be of great value in the assessment of vertebrobasilar insufficiency.

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