Hyperemic receptive aphasia on neuroSPECT.
NeuroSPECT of regional cerebral blood flow (rCBF) with Tc-99m HMPAO demonstrated left temporoparietal hyperemia in two patients with acute receptive aphasia. This finding prompted further testing with electroencephalography that added to the impression of ictal dysphasia. The differential diagnosis in one case included complicated migraine. NeuroSPECT depicts blood flow abnormalities in acute aphasic disorders, either due to ischemia, which is most commonly the cause, or due to hyperemia secondary to migraine or epilepsy. The treatment and prognosis of these latter conditions differ from stroke, and thus SPECT plays a role in patient management.
Department of Radiology, Harborview Medical Center, University of Washington, Seattle 98104.
D H
DH
Lewis
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Longstreth
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Wilkus
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Copass
D000328:Adult; D001041:Aphasia, Wernicke / Q000000981:diagnostic imaging* / Q000209:etiology; D002560:Cerebrovascular Circulation / Q000502:physiology; D003937:Diagnosis, Differential; D004827:Epilepsy / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D006940:Hyperemia / Q000000981:diagnostic imaging*; D017241:MELAS Syndrome / Q000150:complications; D008875:Middle Aged; D015609:Organotechnetium Compounds; D010091:Oximes; D010296:Parietal Lobe / Q000098:blood supply / Q000000981:diagnostic imaging*; D019690:Technetium Tc 99m Exametazime; D013702:Temporal Lobe / Q000098:blood supply / Q000000981:diagnostic imaging*; D015899:Tomography, Emission-Computed, Single-Photon
D015609:Organotechnetium Compounds; D010091:Oximes; D019690:Technetium Tc 99m Exametazime