Fractional flow reserve (FFR) processing of computed tomography (CT) images has gained a substantial body of momentum over the past few years, but a recent study posed the question of whether it can save health care systems from excess spending for stable angina. The numbers from this study are not supportive of the idea when applied to the U.K. National Health System (NHS), but might work in the U.S., where physicians image and treat more aggressively.