Gastrostomy (feeding) tube A tube is placed the stomach for a variety of conditions in which a patient is unable to take sufficient food by mouth for a prolonged period of time. Variations allow feeding directly into the intestines. Hemodialysis Interventional radiologists work closely with patients, their nephrologists, and their vascular surgeons to help maintain vascular access in hemodialysis patients. Long-term venous access catheter A central venous access catheter is a tube that is inserted beneath your skin so there is a simple, pain-free way for doctors or nurses to draw your blood or give you medication or nutrients. The types of catheters inserted include PICC lines, ports, Hickman catheters, and dialysis catheters.