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A, The left vertebral angiogram demonstrates an occlusion of the proximal MCA M1 segment (arrow). B, Administration of 15 mg of intra-arterial rtPA through a microcathether by use of the AcomA and PcomA arteries resulted in partial lysis of thrombus in the left M1 segment with restoration of flow within the inferior division of the left MCA. C, Follow-up CT angiogram 24 hours after stroke shows a complete recanalization of the M1 segment of the left MCA (arrow).
