This study is a randomized, non-blinded, prospective trial to be conducted in the Cardiology clinic at Walter Reed Army Medical Center. Patients, age 18-70 years, referred to the Cardiology clinic for an exercise treadmill test for an outpatient evaluation of possible angina and are low-intermediate risk for symptomatic coronary artery disease, will be eligible. All patients who meet the aforementioned inclusion/exclusion criteria will be consented by an investigator and randomized from sealed envelopes to either “mandatory coronary MSCT angiography” or “no coronary MSCT angiography” before initiation of exercise treadmill testing. The randomization sequence will be generated using a sequence of computer-generated random numbers. All consented subjects will complete surveys assessing baseline depression using the Beck Depression Inventory, anxiety using the State and Trait Anxiety Inventory, and motivation healthy behavioral change using the ladder scale questionnaire. Completion of these three questionnaires are for research purposes and will take approximately 15 minutes.