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Neurology:
Brain Perfusion for Stroke
• Small signal enhancement.
• Small and rigid motion.
• High sampling time.
• Injection time should be not longer than 8 s.
• Patlak model does not really apply in this case (unless there is a tumor) for two main
reasons:
– The presence of blood-brain barrier prevents the blood from going to the EES.
– Permeability is BF-limited.