A fistulagram is a study of a fistula. During a fistulagram, a patient lies on the exam table. The fistula is cleaned and an injection is given to numb the area. A needle is then placed in the fistula and a wire is put inside the needle. A catheter is placed over the wire and the wire is then removed. Contrast dye is injected through the catheter while x-rays are taken in rapid sequence. This allows the Interventional Radiologist to assess the fistula/graft. If nothing is wrong, the catheter is removed and the patient can go home.