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Stroke, Vol 7, 516-522, Copyright © 1976 by American Heart Association

ARTICLES

Aphasia outcome in stroke: a clinical neuroradiological correlation

P Yarnell, P Monroe and L Sobel

Fourteen aphasic patients with acute onset of thromboembolic cerebrovascular insults demonstrable by angiography or radioscintigrams who were available for long-term follow-up have been studied. Their aphasia evolution was compared with acute angiographical and radioisotopic findings, and the lesions shown by follow-up computerized axial tomography (CT). Angiographical site of occlusion, evidence of early reopening of occluded vessels, and radioisotopic flow asymmetries including the "hot-stroke" luxury perfusion failed to correlate with aphasia outcome. Radioisotopic static images were more helpful by depicting lesion location and number but lacked the definition seen on the CT scan. The long-term CT scan by showing the size, location and number of lesions had a good correlation with aphasia outcome. Those patients with large dominant hemisphere involvements, either one large or many smaller lesions, fared poorly while those with lesser lesions did better. Bilateral lesions, at times evasive clinically, helped to account for significant aphasia residuals.