MDCT & procedural planning for TMVR. Preprocedural MDCT analysis for TMVR with the Intrepid system (Medtronic, Minneapolis, MN). (A) Assessment of the mitral annular plane at end-systole yields a perimeter of 119 mm, with an equivalent diameter of 37.2 mm. This would fit a 42 mm device. (B,C) Measurements of the LVOT and neo-LVOT suggest a low risk of LVOT obstruction. (D) The Intrepid TMVR device (trapezoid) is virtually placed at the native annulus to model and simulate its fit within the left ventricle and assess LVOT clearance. LVOT, left ventricular outflow tract; MDCT, multidetector computed tomography; TMVR, transcatheter mitral valve replacement.