LAUSR

O ver the past 20 years, coronary computed tomography angiography (CTA) has undergone rapid growth from a technique that can estimate the amount and severity of coronary artery disease (1,2), to a test that provides important prognostic information and has a direct impact on subsequent patient management decisions (3,4). Consequently, clinical practice guidelines now include coronary CTA among the routine testing options for evaluating patients with stable chest pain (5); coronary CTA is increasingly used in clinical practice (6). However, during this same time of increased adoption, some have challenged whether the use of coronary CTA leads to any benefits in patient outcomes compared with other approaches (7). In response to these concerns, several studies have demonstrated that the results provided by coronary CTA affect patient and physician behavior (8,9), and