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Demonstration of Scepter XC balloon angioplasty: a Middle cerebral artery vasospasm at M1 and M2 segments (black arrows). b Scepter XC balloon gradually inflated from the central area. c Even and gentle expansion of the balloon (blue arrows) along the vessel wall (red arrows). d Improvement of vasospasm after angioplasty at M1 and nimodipine treatment in M2 segment during the same session
