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Intracardiac echocardiography-guided cryoablation. (A) ICE-guided low transseptal puncture; (B) cryoablation sheath delivered through the low transseptum; (C) cryoballoon delivered into the left superior pulmonary vein under ICE guidance; (D) ICE color Doppler ultrasound applied to assess cryoballoon closure.
