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Flow chart of patient inclusion steps and findings analyzed at each step. AIS, acute ischemic stroke; ICA, internal carotid artery; MCA, middle cerebral artery; BA, basilar artery; VA, vertebral artery; mRS, modified Rankin Scale; OTP time, onset to puncture time; OTR time, onset to recanalization time; ACS, anterior circulation stroke; PCS, posterior circulation stroke; NIHSS, National Institutes of Health Stroke Scale score; MT, mechanical thrombectomy.
