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Vasospasm and its effect on PCT color maps for a given patient, 6 days after SAH with asymptomatic vasospasm (white arrow) in the right middle cerebral artery and an area of low perfusion in the territory of this artery (highlighted by a dotted line in MTT). Vasospasm detected on systematic CT (no abnormality found on TCD, no intra-cranial hypertension). No DCI was found on MRI at 3 months (the hypointensity on FLAIR in the Sylvian fissure is related to the resorption of hematoma).
