1. Detection of “functional” valves in reversed saphenous vein bypass grafts: Identification with duplex ultrasonography 
Michael J. Tullis, MD, Jean Primozich, BS, RVT, D.Eugene Strandness, MD 
Journal of Vascular Surgery 
Volume 25, Issue 3, Pages (March 1997)
DOI: /S (97)
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

2. Fig. 1
Three separate FV. A, Doppler waveform of completely competent FV. Arrow indicates valve closure that is associated with audible “click.” B, FV with valve closure (single arrow) and moderate reflux (double arrow). C, FV with valve closure (single arrow) and marked reflux (double arrow).
Journal of Vascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

3. Fig. 1
Three separate FV. A, Doppler waveform of completely competent FV. Arrow indicates valve closure that is associated with audible “click.” B, FV with valve closure (single arrow) and moderate reflux (double arrow). C, FV with valve closure (single arrow) and marked reflux (double arrow).
Journal of Vascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

4. Fig. 1
Three separate FV. A, Doppler waveform of completely competent FV. Arrow indicates valve closure that is associated with audible “click.” B, FV with valve closure (single arrow) and moderate reflux (double arrow). C, FV with valve closure (single arrow) and marked reflux (double arrow).
Journal of Vascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

5. Fig. 2
A, B-mode image of FV in longitudinal plane, arrow indicates valve cusp. B, Same FV in transverse plane demonstrating both valve cusps.
Journal of Vascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

6. Fig. 2
A, B-mode image of FV in longitudinal plane, arrow indicates valve cusp. B, Same FV in transverse plane demonstrating both valve cusps.
Journal of Vascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

7. Fig. 3
A, Baseline Doppler waveform of FV with moderate reflux. B, Same FV with distal blood pressure cuff at suprasystolic pressure. Note intensification of reflux. C, FV after cuff deflation (arrow) with subsequent reactive hyperemia and disappearance of reflux. D, Sixteen seconds after cuff deflation there is return of diastolic flow reversal and FV reflux (arrow). E, Return to baseline Doppler waveform.
Journal of Vascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

8. Fig. 3
A, Baseline Doppler waveform of FV with moderate reflux. B, Same FV with distal blood pressure cuff at suprasystolic pressure. Note intensification of reflux. C, FV after cuff deflation (arrow) with subsequent reactive hyperemia and disappearance of reflux. D, Sixteen seconds after cuff deflation there is return of diastolic flow reversal and FV reflux (arrow). E, Return to baseline Doppler waveform.
Journal of Vascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

9. Fig. 3
A, Baseline Doppler waveform of FV with moderate reflux. B, Same FV with distal blood pressure cuff at suprasystolic pressure. Note intensification of reflux. C, FV after cuff deflation (arrow) with subsequent reactive hyperemia and disappearance of reflux. D, Sixteen seconds after cuff deflation there is return of diastolic flow reversal and FV reflux (arrow). E, Return to baseline Doppler waveform.
Journal of Vascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

10. Fig. 3
A, Baseline Doppler waveform of FV with moderate reflux. B, Same FV with distal blood pressure cuff at suprasystolic pressure. Note intensification of reflux. C, FV after cuff deflation (arrow) with subsequent reactive hyperemia and disappearance of reflux. D, Sixteen seconds after cuff deflation there is return of diastolic flow reversal and FV reflux (arrow). E, Return to baseline Doppler waveform.
Journal of Vascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

11. Fig. 3
A, Baseline Doppler waveform of FV with moderate reflux. B, Same FV with distal blood pressure cuff at suprasystolic pressure. Note intensification of reflux. C, FV after cuff deflation (arrow) with subsequent reactive hyperemia and disappearance of reflux. D, Sixteen seconds after cuff deflation there is return of diastolic flow reversal and FV reflux (arrow). E, Return to baseline Doppler waveform.
Journal of Vascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions