
Keywords: BTO; EC-IC bypass; OA-MCA bypass; BTO; Balloon test occlusion; CS; Cavernous sinus; EC-IC; Extracranial-intracranial; ICA; Internal carotid artery; MCA; Middle cerebral artery; MRI; Magnetic resonance imaging; OA; Occipital artery; OphA; Ophthalmic artery