1. Clinical significance of free-floating venous thrombi
E.Douglas Baldridge, MD, Michael A. Martin, BS, Richard E. Welling, MD 
Journal of Vascular Surgery 
Volume 11, Issue 1, Pages (January 1990)
DOI: / (90)
Copyright © 1990 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

2. Fig. 1
Zones of reference for lower extremity venous scanning. (Reprinted with permission from Karkow WS, Ruoff BA, Cranley JJ. B-mode venous imaging. In: Kempezinski RF, Yao JST, eds. Practical noninvasive vascular diagnosis. 2nd ed. Chicago: Year Book Medical Publishers, 1987)
Journal of Vascular Surgery  , 62-69DOI: ( / (90) )
Copyright © 1990 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

3. Fig. 2
Transverse view of free-floating thrombus (FFT) in common femoral vein. Small arrows indicate edge of thrombus; large arrows indicate vein wall. CFA, common femoral artery.
Journal of Vascular Surgery  , 62-69DOI: ( / (90) )
Copyright © 1990 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

4. Fig. 3
Longitudinal view of free-floating thrombus (FFT) in common femoral vein. Note ball-shaped tip indicated by small arrows; large arrows indicate vein wall.
Journal of Vascular Surgery  , 62-69DOI: ( / (90) )
Copyright © 1990 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions