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Abstract
BACKGROUND AND PURPOSE: Ischemic stroke is a major cause of death and chronic disability, thus proper diagnosis and management is important. Ischemic strokes involving the anterior circulation due to intracranial stenotic lesions are believed to be much more common in Asians and Africans rather than in other populations. This abnormality can be noninvasively assessed with transcranial Doppler sonography (TCD) and computed tomographic angiography (CTA). To our knowledge, the usefulness of TCD sonography compared with CTA in the diagnosis of intracranial stenotic disease involving the anterior circulation has not been thoroughly studied.