The optimal positioning for viewing the veins in the lower extremity for venous mapping includes the following:

• The patient’s leg should be outwardly rotated in a comfortable position.
• Use reverse Trendelenburg/dependent position to promote dilatation of the lower extremity veins.
• The lateral decubitus or prone position may be utilized to visualize the popliteal vein, peroneal and proximal posterior tibial veins, small saphenous vein and calf veins.
• The room should be warm and limbs covered until imaged to reduce vasoconstriction.