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Self Instructional Manual for Cancer Registrars - SEER - National ...

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RADIOLOGIC<br />

EXAMINATIONS USING CONTRAST MEDIA<br />

Certain materials or gases can be injected into veins, arteries, lymphatics, or hollow cavities to<br />

obtain contrast with the surrounding tissues. A contrast medium is a radiopaque substance which<br />

obstructs the passage of x-rays so that the structures containing it appear white on the x-ray film thus<br />

delineating abnormal pouches or growths and defining the contour of body structures on x-ray.<br />

Examples of radiopaque materials are Hypaque and Renografin, dyes used in intravenous pyelogram,<br />

and barium, the substance used in a gastrointestinal series. Some of the more common radiographic<br />

examinations which use contrast media are:<br />

A. Angiography: The radiographic study of the vascular system<br />

1. Cerebral angiogram: X-ray of the vessels of the brain<br />

2. Cardiac angiogram: X-ray showing the functions of the heart and large blood<br />

vessels<br />

3. Lymphangiogram: X-ray study of the vessels of the lymphatic system<br />

4. Arteriography: X-ray examination of arteries<br />

5. Venography: X-ray examination of veins<br />

B. Urography: Radiologic study of the urinary tract<br />

1. Urogram (Pyelogram): X-ray of the kidney and ureter with emphasis on the<br />

pelvis of the kidney by intravenous injection of a contrast<br />

medium<br />

2. Cystogram: X-ray of the urinary bladder by intravenous injection of<br />

a contrast medium<br />

3. IVP (Intravenous Pyelography): A succession of x-ray films of the urinary tract following<br />

the injection into a vein of an iodine-containing<br />

substance which is collected by the kidneys, passing into<br />

the ureters and subsequently the bladder, allowing the<br />

study of urinary tract function (also known as<br />

Intravenous Urography, IVU).<br />

4. Retrograde Urography: (Retrograde Pyelography): Examination of the ureter<br />

and renal collecting structures by means of instillation of<br />

contrast material through a ureteral catheter passed<br />

through a cystoscope into the bladder and ureter.<br />

C. Bronchography: The radiographic study of the bronchi of the lung<br />

Bronchogram:<br />

An x-ray of the bronchial system<br />

D. Upper GI Series or BariumSwallow: X-ray studies, following ingestion of barium, of the<br />

pharynx, esophagus, stomach, duodenum, and small<br />

intestine<br />

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