<qa>  What is the drug that lowers blood cholesterol levels?This study will examine how an approved drug TriLipix, when used in combination with a statin a drug that lowers blood cholesterol levels, affects the makeup of plaque. Patients will be randomly assigned to receive either the study treatment TriLipix plus Atorvastatin or the comparison treatment a placebo. Comparison of the effect on the makeup of plaque will be done by using coronary artery computed tomography angiography CTA, which all participants will have at enrollment and at the end of the study 18 months after enrollment. 