25 patients were treated with carotid artery stenting. These patients were elderly and had carotid artery stenosis, but were asymptomatic (since they had not had strokes.) Their arteries were simply
closed off and the blood flow going to their brains had been slowed, resulting in hypoperfusion. These patients showed cognitive impairment in a variety of functions, which were assessed before their treatment.
Six months after carotid artery stenting treatment there was significant improvement in neuropsychological testing for all patients.
People with MS have cerebral hypoperfusion. This is scientific fact.