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M. Mehdiratta, MD, FRCPC; M. Selim, MD, PhD

Arch Neurol. 2007;64(9):1348-1349.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

Perfusion computed tomography (CT) is increasingly being used in the diagnosis and management of patients with strokelike symptoms. By providing information about the cerebral blood flow, volume, and mean transit time, the presence of ischemia can be determined and this can aid in clinical decision making, especially surrounding the use of thrombolytics.

We evaluated an 81-year-old woman with atrial fibrillation and an old left hemispheric infarct for sudden onset of right-sided weakness and aphasia. Her eyes were midline. It was unclear if she had a new infarct or focal seizures. Plain CT revealed an old left lenticulostriate infarct without signs of acute stroke, and CT angiogram did not reveal major vascular occlusion. Perfusion CT revealed an increase in cerebral blood flow and cerebral blood volume and a decrease in mean transit time in the left parieto-occipital and corona radiata areas (Figure . . . [Full Text of this Article]

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