Computed tomography angiography-based evaluation of great saphenous vein conduit for lower extremity bypass Dorian J. deFreitas, MD, Timothy P. Love,

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Computed tomography angiography-based evaluation of great saphenous vein conduit for lower extremity bypass Dorian J. deFreitas, MD, Timothy P. Love, MD, Karthikeshwar Kasirajan, MD, Noel C. Haskins, MD, Ronald T. Mixon, MD, Luke P. Brewster, MD, PhD, Yazan Duwayri, MD, Matthew A. Corriere, MD, MS Journal of Vascular Surgery Volume 57, Issue 1, Pages 50-55 (January 2013) DOI: 10.1016/j.jvs.2012.06.077 Copyright © 2013 Terms and Conditions

Fig 1 Axial computed tomography angiography (CTA) images demonstrating great saphenous vein (GSV) appearance and artifacts impairing diameter measurement. Arrow indicates location of GSV. A, Normal appearance of above-knee GSV. B, Extensive subcutaneous edema rendering vein wall indistinct. C, Paucity of surrounding adipose tissue makes vein wall difficult to distinguish from adjacent tibia and overlying skin and subcutaneous tissue. Journal of Vascular Surgery 2013 57, 50-55DOI: (10.1016/j.jvs.2012.06.077) Copyright © 2013 Terms and Conditions

Fig 2 Receiver-operating characteristic curves: computed tomography angiography (CTA)-based minimum great saphenous vein (GSV) diameter as indicator of adequate bypass conduit. Above-knee (A) and below-knee (B) CTA-based diameter cut-points in millimeters are indicated along the curve. Adequate conduit defined as diameter ≥3.0 mm by duplex ultrasound (DUS). Journal of Vascular Surgery 2013 57, 50-55DOI: (10.1016/j.jvs.2012.06.077) Copyright © 2013 Terms and Conditions

Fig 3 Computed tomography angiography (CTA) vs duplex ultrasound (DUS)-based minimum great saphenous vein (GSV) diameters. Scatterplots demonstrate minimum above-knee (A) and below-knee (B) GSV diameters in millimeters. Solid line indicates adequate bypass conduit definition of 3.0 mm by DUS. Dashed line indicates CTA-based diameter cut-point for above-knee (A) and below-knee (B) locations. Journal of Vascular Surgery 2013 57, 50-55DOI: (10.1016/j.jvs.2012.06.077) Copyright © 2013 Terms and Conditions