| Subject | Contents |
| Definition | An X-ray image(s) of the abdomen. X-rays are a form of electromagnetic radiation (like light). They are of higher energy, however, and can penetrate the body to form an image on film. Structures that are dense (such as bone) will appear white, air will be black, and other structures will be shades of gray. |
| Alternative Names | Abdominal X-ray; X-ray - abdomen; Flat plate; KUB |
| How the test is performed | The test is performed in a hospital radiology department or in the health care provider's office by an X-ray technologist. You lie on your back on the X-ray table. The X-ray machine is positioned over your abdominal area. You hold your breath as the picture is taken so that the picture will not be blurry. You may be asked to change position to the side or to stand up for additional pictures. |
| How to prepare for the test | Inform the health care provider if you are pregnant , have an IUD inserted, or have had a barium contrast media X-ray in the last 4 days. If you have taken any medications such as Pepto Bismol (which contains bismuth) within 4 days mention it to the health care provider, because they may interfere with the test. You wear a hospital gown during the X-ray procedure. You must remove all jewelry. You must sign an informed consent form. Infants and children: The physical and psychological preparation you can provide for this or any test or procedure depends on your child's age, interests, previous experiences, and level of trust. For specific information regarding how you can prepare your child, see the following topics as they correspond to your child's age:infant test or procedure preparation (birth to 1 year) toddler test or procedure preparation (1 to 3 years) preschooler test or procedure preparation (3 to 6 years) schoolage test or procedure preparation (6 to 12 years) adolescent test or procedure preparation (12 to 18 years) |
| How the test will feel | There is no discomfort. The films are taken with you lying on your back, side, and standing. |
| Why the test is performed | The abdominal X-ray can help identify suspected problems in the urinary system such as a kidney stone , or a blockage or perforation (hole) in the intestine. The X-ray can locate an object that has been swallowed. The X-ray may also help in diagnosing a pain in the abdomen or unexplained nausea . |
| Normal Values | The X-ray will show normal structures for a person your age. |
| What abnormal results mean | Abnormal findings include: abdominal masses an accumulation of fluid in the abdominal area kidney stones some types of gallstones intestinal blockage foreign bodies in the intestines (an intestinal obstruction ) trauma to the abdominal tissue perforation of the stomach or intestines Additional conditions under which the test may be performed:abdominal aortic aneurysmacute appendicitisacute cholecystitisacute renal failureAddison's diseaseadenomyosisannular pancreasascariasisatheroembolic renal diseasebiliary atresiablind loop syndromecholangitischronic renal failurecirrhosisechinococcusencopresisHirschsprung's diseaseidiopathic aplastic anemiainjury of the kidney and ureterintussusception (children)necrotizing enterocolitisnephrocalcinosisperitonitis; dialysis associatedperitonitis, spontaneousprimary or idiopathic intestinal pseudo-obstructionrenal artery stenosisrenal cell carcinomasecondary aplastic anemiatoxic megacolonWilms' tumor |
| What the risks are | There is low radiation exposure. X-rays are monitored and regulated to provide the minimum amount of radiation exposure needed to produce the image. Most experts feel that the risk is low compared with the benefits. Pregnant women and children are more sensitive to the risks of the X-ray . Women should make the health care provider aware of suspected pregnancy . |
| Special considerations | The test is not usually recommended for pregnant women. The ovaries and uterus cannot be shielded during the abdominal X-ray because of their location. Men should have a lead shield placed over the testes to protect against the radiation. |
| | |