Patients with coronary artery disease who were confirmed by coronary angiography were eligible for the study. Carotid ultrasonography was performed before coronary angiography, and carotid intima-media thickness (IMT), maximum thickness and length of all plaques were measured.
This multicenter study involved 5 hospitals (Changhai Hospital; Yueyang Hospital of Shanghai University of Traditional Chinese Medicine; Gongli Hospital; Putuo Hospital of Shanghai University of Traditional Chinese Medicine; No. 904 Hospital of the PLA Joint Logistics Support Force Wuxi). The study enrolled 5000 patients for suspected CAD who referred to coronary angiography from January 2017 through December 2018.