Figure 11a. Preoperative evaluation for aortic valve repair in a 77-year-old woman with a history of prior CABG. (a) Nonenhanced axial CT image obtained for aortic atherosclerosis assessment shows a subtle, rounded area of soft-tissue attenuation posterior to the sternum (arrow), a finding that suggests an adherent saphenous vein graft. (b) Sagittal curved MPR image shows adherence of the saphenous vein graft to the inner table of the sternum (arrows). The extent of adhesions in the patient resulted in an extensive dissection of the saphenous vein graft from the sternum before sternotomy was attempted.