Carotid Atherosclerosis Measurements for Three Representative Subjects. Baseline and 6 month follow-up for intima media thickness (left column), total plaque volume (middle column), and vessel wall volume (right column). Scalar bar = 1 cm. Subject 1 is a 68-year-old male from Group A; R carotid artery baseline IMT = 1.044 mm, TPV = 100 mm3, VWV = 710 mm3 and follow-up IMT = 0.862 mm, TPV = 80 mm3, VWV = 720 mm3. Subject 2 is a 77-year-old male from Group B with R carotid artery baseline IMT = 0.895 mm, TPV = 70 mm3, VWV = 390 mm3 and follow-up IMT = 0.790 mm, TPV = 70 mm3, VWV = 420 mm3. Subject 3, from Group B is a 61 year old male; R Carotid artery IMT = 0.744 mm, TPV = 170 mm3, and VWV = 430 mm3 at baseline and IMT = 0.882 mm, TPV = 200 mm3 and VWV = 470 mm3 at follow-up.