Mark F. Fillinger, MD, Richard J. Baker, MD, Robert M

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Presentation transcript:

Carotid duplex criteria for a 60% or greater angiographic stenosis: Variation according to equipment Mark F. Fillinger, MD, Richard J. Baker, MD, Robert M. Zwolak, MD, PhD, Anne Musson, BS, RVT, James E. Lenz, MD, Joan Mott, RVT, Fritz R. Bech, MD, Daniel B. Walsh, MD, Jack L. Cronenwett, MD Journal of Vascular Surgery Volume 24, Issue 5, Pages 856-864 (November 1996) DOI: 10.1016/S0741-5214(96)70023-X Copyright © 1996 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 1 Angiographic percent stenosis versus ICA/CCA PSV ratio (A), ICA PSV (B), and ICA EDV (C) for all patent carotid bifurcations. Data shown for all four scanners. Journal of Vascular Surgery 1996 24, 856-864DOI: (10.1016/S0741-5214(96)70023-X) Copyright © 1996 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 1 Angiographic percent stenosis versus ICA/CCA PSV ratio (A), ICA PSV (B), and ICA EDV (C) for all patent carotid bifurcations. Data shown for all four scanners. Journal of Vascular Surgery 1996 24, 856-864DOI: (10.1016/S0741-5214(96)70023-X) Copyright © 1996 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 1 Angiographic percent stenosis versus ICA/CCA PSV ratio (A), ICA PSV (B), and ICA EDV (C) for all patent carotid bifurcations. Data shown for all four scanners. Journal of Vascular Surgery 1996 24, 856-864DOI: (10.1016/S0741-5214(96)70023-X) Copyright © 1996 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 2 Angiographic percent stenosis versus duplex data demonstrating linear relationship after logarithmic transformation. Angiographic stenosis versus log (ICA/CCA PSV ratio) (A), log (ICA PSV) (B), and log (ICA EDV) (C). Data shown for all four scanners. Journal of Vascular Surgery 1996 24, 856-864DOI: (10.1016/S0741-5214(96)70023-X) Copyright © 1996 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 2 Angiographic percent stenosis versus duplex data demonstrating linear relationship after logarithmic transformation. Angiographic stenosis versus log (ICA/CCA PSV ratio) (A), log (ICA PSV) (B), and log (ICA EDV) (C). Data shown for all four scanners. Journal of Vascular Surgery 1996 24, 856-864DOI: (10.1016/S0741-5214(96)70023-X) Copyright © 1996 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 2 Angiographic percent stenosis versus duplex data demonstrating linear relationship after logarithmic transformation. Angiographic stenosis versus log (ICA/CCA PSV ratio) (A), log (ICA PSV) (B), and log (ICA EDV) (C). Data shown for all four scanners. Journal of Vascular Surgery 1996 24, 856-864DOI: (10.1016/S0741-5214(96)70023-X) Copyright © 1996 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 3 Angiographic percent stenosis versus duplex data after logarithmic transformation, with separate regression lines plotted for each scanner. Angiographic stenosis versus log (ICA/CCA PSV ratio) (A), log (ICA PSV) (B), and log (CCA PSV) (C). A and B demonstrate that regression line for scanner 4 (regression line in bold) is significantly different from others. C demonstrates that CCA PSV does not change substantially with angiographic ICA stenosis, and scanner 4 is not significantly different at these lower velocities. *p < 0.05 versus regression lines for other scanners. Journal of Vascular Surgery 1996 24, 856-864DOI: (10.1016/S0741-5214(96)70023-X) Copyright © 1996 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 3 Angiographic percent stenosis versus duplex data after logarithmic transformation, with separate regression lines plotted for each scanner. Angiographic stenosis versus log (ICA/CCA PSV ratio) (A), log (ICA PSV) (B), and log (CCA PSV) (C). A and B demonstrate that regression line for scanner 4 (regression line in bold) is significantly different from others. C demonstrates that CCA PSV does not change substantially with angiographic ICA stenosis, and scanner 4 is not significantly different at these lower velocities. *p < 0.05 versus regression lines for other scanners. Journal of Vascular Surgery 1996 24, 856-864DOI: (10.1016/S0741-5214(96)70023-X) Copyright © 1996 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 3 Angiographic percent stenosis versus duplex data after logarithmic transformation, with separate regression lines plotted for each scanner. Angiographic stenosis versus log (ICA/CCA PSV ratio) (A), log (ICA PSV) (B), and log (CCA PSV) (C). A and B demonstrate that regression line for scanner 4 (regression line in bold) is significantly different from others. C demonstrates that CCA PSV does not change substantially with angiographic ICA stenosis, and scanner 4 is not significantly different at these lower velocities. *p < 0.05 versus regression lines for other scanners. Journal of Vascular Surgery 1996 24, 856-864DOI: (10.1016/S0741-5214(96)70023-X) Copyright © 1996 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions