In recent years various methods of correcting incompetent venous valves by surgical therapy have been developed. For such purposes direct radiologic visualization of venous valves is required. By ascending phlebography, the valvular sinus is clearly visualized. The diagnostic accuracy is enhanced by retrograde straining phlebography.
KeywordsContrast Medium Femoral Vein Saphenous Vein Popliteal Vein Superficial Vein
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