Silver Book Fact
Echocardiography and nuclear imaging are used for provocative “stress” testing of the heart. When combined with other forms of stress, both can identify the presence of coronary artery-obstructing lesions that decrease the cross-sectional area of the coronary artery by 40% or more.
Weisfeldt M, Zeiman S. Advances in the Prevention and Treatment of Cardiovascular Disease: One of the most important contributors to improved human survival is the treatment of cardiovascular disease. Health Aff. 2007; 26(1): 25-37. http://content.healthaffairs.org/cgi/content/full/26/1/25