Interobserver variability in aortoiliac and femoropopliteal duplex scanning Dirk Th. Ubbink, MD, PhD, Mark Fidler, MD, Dink A. Legemate, MD, PhD Journal of Vascular Surgery Volume 33, Issue 3, Pages 540-545 (March 2001) DOI: 10.1067/mva.2001.111734 Copyright © 2001 Society for Vascular Surgery and The American Association for Vascular Surgery Terms and Conditions
Fig. 1 Interobserver variability of PSV ratio measurements of aortoiliac arteries by observers A and B according to Bland and Altman. Ninety-five percent limits of agreement and mean difference lines are drawn in plot. The difference between two PSV ratio measurements from both observers is denoted on vertical axis; the mean of two PSV registrations is denoted on horizontal axis. PSV, Peak systolic velocity. Journal of Vascular Surgery 2001 33, 540-545DOI: (10.1067/mva.2001.111734) Copyright © 2001 Society for Vascular Surgery and The American Association for Vascular Surgery Terms and Conditions
Fig. 2 Interobserver variability of PSV ratio measurements of aortoiliac arteries by observers A and C according to Bland and Altman. Ninety-five percent limits of agreement and mean difference lines are drawn in plot. Difference between two PSV ratio measurements from both observers is denoted on vertical axis; the mean of two PSV registrations is denoted on horizontal axis. PSV, Peak systolic velocity. Journal of Vascular Surgery 2001 33, 540-545DOI: (10.1067/mva.2001.111734) Copyright © 2001 Society for Vascular Surgery and The American Association for Vascular Surgery Terms and Conditions
Fig. 3 Interobserver variability of PSV ratio measurements of femoropopliteal arteries by observers A and B according to Bland and Altman. Ninety-five percent limits of agreement and mean difference lines are drawn in plot. Difference between two PSV ratio measurements from both observers is denoted on vertical axis; the mean of two PSV registrations is denoted on horizontal axis. Journal of Vascular Surgery 2001 33, 540-545DOI: (10.1067/mva.2001.111734) Copyright © 2001 Society for Vascular Surgery and The American Association for Vascular Surgery Terms and Conditions