Correlation Between Ultrasound-Based Carotid Plaque Characteristics and Coronary Artery Disease Severity: A Retrospective Cross-Sectional Study

< .001). In multivariable analyses, IMT remained independently associated with CAD severity. The addition of carotid ultrasound parameters improved model discrimination for identifying high SYNTAX scores, with the area under the receiver operating characteristic curve (AUC) increasing from 0.728 to 0.826. Carotid ultrasound parameters, particularly IMT, are associated with CAD severity and provide incremental value for identifying patients with complex coronary artery disease.