Correlations between ultrasound, tomographic, and intraoperative measurements of the great saphenous vein used as an arterial graft.

Saphenous vein diameters were underestimated by preoperative US and CT scans when compared to intraoperative measurements. Thus, in patients undergoing graft planning for revascularization, the choice of conduit should take this data into consideration, so that use of the saphenous vein is not ruled out unnecessarily during planning.