This page serves as a guide to transgastric J tubes that are used within the field of interventional radiology. Fundamentally, a transgastric J-tube is a literal tube that connects the outside environment to the inside of the patient’s GI tract. It is inserted percutaneously, transversing the wall of the stomach, as well as the abdomen, and the distal portion of the tube terminates in the patient’s jejunum. Often times it is used to provide nutrition to the patient (by injecting it directly into the jejunum). Unlike a G-J tube, it has only one opening in its jejunal portion. Look on this page to see how this piece of medical equipment will appear on various imaging modalities.