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Neurologische Universitätsklinik, Vienna, Austria.
We performed 99mTc-HMPAO SPECT in a patient during transient global amnesia and twice thereafter. SPECT during the attack showed a significant diminution of regional blood flow in the left thalamus and a less marked diminution in the right thalamus. Quantitative evaluation of global 99mTc-HMPAO uptake indicated a diffuse depression of cerebral blood flow. At follow-up to 40 days after the attack, global uptake and thalamic flow indices normalized, but there was a persistent reduction of left frontal flow values.
Address correspondence and reprint requests to Dr. Georg Goldenberg, Neurologische Universitätsklinik, Lazarettgasse 14, A 1090 Wien, Austria.
Received November 13, 1990. Accepted for publication in final form May 1, 1991.
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