Keywords: بررسی پیگیری; Atherosclerotic plaque; Intravascular ultrasound; Stable angina; Follow-up study; Lipid; Placa ateroesclerótica; EcografÃa intravascular; Angina estable; Estudio de seguimiento; LÃpidos; IVUS-VH; intravascular ultrasound based virtual histology; LAPS;