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A 41 year-old man was unresponsive after a cardiac arrest. Examination demonstrated intact brainstem reflexes and extensor posturing. No evidence of cortical function was present.
Flair axial MRI images of the brain. (Left): patient; (Right): normal. In the patient, note several abnormalities in the patient's scan: 1) increased differentiation between grey and white matter; 2) effacement of the sulci; 3) abnormal signal in the basal ganglia (yellow arrow on the putamen/globus pallidus); and 4) abnormal signal in the thalamus.
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