Subendocardial enhancement in a 44-year-old man with a history of CAD, MI, and tobacco use who was referred for cardiac MRI to assess MI size. Short-axis LGE cardiac MR image of the LV shows subendocardial-based enhancement, with about 75% transmural extent within the basal septal wall (arrow), as well as some extension into the adjacent anterior wall. The transmural extent of enhancement is greater than 50%, which indicates a lower likelihood of recovery with revascularization.