This device sends high-frequency sound waves through the body that a computer then uses to produce images of the body. The procedure is painless and generally takes forty minutes to one hour. Progress of the barium can be followed with a fluoroscope and X-ray pictures can be taken, revealing structures and possible abnormalities of the esophagus, stomach, and duodenum. Venography Venography is a technique for viewing the interior of a vein by injecting a solution visible on X-rays. Passage of the solution through the vein is recorded on a series of pictures.
Venography is used to detect conditions such as deep-vein thrombosis.
Loma Linda University.