SEEN on a plain X-ray. By using BARIUM to coat the inner lining of this area the Radiologist can see the bowel clearly on the X-ray screen, and can watch the way it functions during this study. A small lubricated PLASTIC TUBE will be inserted through your nostril or mouth and down into your stomach by the Doctor or Nurse. This can be a little uncomfortable, but a COMBINATION of anaesthetic jelly and spray minimizes the discomfort.