[1] The x-ray film or image of the lymphatic vessels and lymph nodes is called a lymphogram or a lymphangiogram.
The resulting lymphogram is used to find the locations of large vessels and nodes, and to identify sites of blockage in lymphatic drainage.
Lymph nodes can also be detected via radionuclide imaging after injection of radioactive colloids.
[3] This prevents damage to the lymphatic vessel and disrupting the normal rate of lymph flow.
A fluoroscope is used to follow the dye as it spreads through the lymphatic system through the legs, into the groin, and along the back of the abdominal cavity.