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BACKGROUND The two-dimensional (2D) proximal isovelocity surface area (PISA) method has known technical limitations, mainly the geometric assumptions of PISA shape required to calculate effective(More)
OBJECTIVES We sought to evaluate the feasibility of identifying and ablating the substrate of unmappable ventricular tachycardia (VT). BACKGROUND Noninducible and nonstable VT cannot be ablated by(More)
End-diastolic volume and end-systolic volume were measured in 35 consecutive patients with cardiomyopathy using 2-dimensional (2-D) and 3-dimensional (3-D) echocardiography (2, 4, and 8 planes) and(More)