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Preanastomosis mean middle cerebral artery (MCA) flow rate: (A) correlation of different measurement techniques; (B) mean MCA flow rates; (C) direction before and after microanastomosis; (D) correlation of MCA size and flow rate; (E) comparison of positive MCA flow rates and laterality of disease; and (F) positive and negative MCA flow in unilateral disease before microanastomosis. *Statistically significant P<0.05.
