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Color-flow duplex criteria for grading stenosis in infrainguinal vein grafts  Jacob Buth, MD, PhD, Ben Disselhoff, MD, Casper Sommeling, MD, Leo Stam,

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Presentation on theme: "Color-flow duplex criteria for grading stenosis in infrainguinal vein grafts  Jacob Buth, MD, PhD, Ben Disselhoff, MD, Casper Sommeling, MD, Leo Stam,"— Presentation transcript:

1 Color-flow duplex criteria for grading stenosis in infrainguinal vein grafts 
Jacob Buth, MD, PhD, Ben Disselhoff, MD, Casper Sommeling, MD, Leo Stam, MD  Journal of Vascular Surgery  Volume 14, Issue 6, Pages (December 1991) DOI: /mva Copyright © 1991 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

2 Fig. 1 Evaluated parameters: a, PSV-graft, PSV measured at the normal midthigh graft. b, PSV-max., PSV measured at the stenosis or, in normal bypasses, at the below-knee graft. c, PSV-index, ratio of a and b. d, EDV, EDV velocity measured at the stenosis, or in normal bypasses at the below-knee graft. Journal of Vascular Surgery  , DOI: ( /mva ) Copyright © 1991 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

3 Fig. 2 A, IA DSA, arrows indicate severe stenosis; B, color-flow image with 59% diameter reduction; C, flow velocity spectrum recording in severe stenosis. There is acceleration of peak systolic and diastolic flow velocities. Note underestimation of stenotic diameter reduction by color-flow image. Journal of Vascular Surgery  , DOI: ( /mva ) Copyright © 1991 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

4 Fig. 3 Correlation of PSV-index with severity of stenosis. Least squares regression line is represented. Journal of Vascular Surgery  , DOI: ( /mva ) Copyright © 1991 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

5 Fig. 4 Correlation of EDV with severity of stenosis as determined by DSA. Least squares regression lines are represented for all group B grafts (solid line) as well as for grafts with >70% stenosis (broken line). Journal of Vascular Surgery  , DOI: ( /mva ) Copyright © 1991 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

6 Fig. 5 Profiles for three parameters to discriminate grafts with and without lesions of different severity. Journal of Vascular Surgery  , DOI: ( /mva ) Copyright © 1991 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

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