
Keywords: FLAIR، بازیابی معکوس جذب مایع; Cerebral ischemia; EC-IC bypass; FLAIR MRI; Fluctuation; White matter hyperintensitiesCBF, Cerebral blood flow; EC-IC, Extracranial-intracranial; FLAIR, Fluid-attenuated inversion recovery; ICA, Internal carotid artery; IMP SPECT, 123I-iodoamphetamine sin