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Partial recanalization of the MCA by using the Penumbra aspiration system. A, The reperfusion catheter (arrow) is placed at the proximal end of the clot. B, The clot is aspirated into the aspiration catheter with the assistance of the separator (asterisk). Small clot fragments (circle) are generated during the procedure. C, A small portion of clot is retained at 1 of the MCA branches. D, Partial flow restoration is achieved.
