1. From the Cardiovascular Center, Aalst, Belgium; Department of Cardiology, Catharina Hospital and Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, Netherlands; Department of Physiology, University of Louvain, Brussels, Belgium; and the Weatherhead PET Center for Preventing and Reversing Atherosclerosis, Department of Medicine, University of Texas Medical School, Houston.