Abdominal x-ray

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Abdominal X-ray
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Abdominal x-ray
ICD-9-CM87.5,87.9, 88.0-88.1
MedlinePlus003815

An abdominal x-ray is an

urinary bladder
).

Indications

In children, abdominal x-ray is indicated in the acute setting:

Yet, CT scan is the best alternative for diagnosing intra-abdominal injury.[1]

Computed tomography provides an overall better surgical strategy planning, and possibly fewer unnecessary laparotomies. Abdominal x-ray is therefore not recommended for adults with acute abdominal pain presenting in the emergency department.[2]

Projections

The standard abdominal X-ray protocol is usually a single anteroposterior projection in

small bowel obstruction
) includes two views: typically, a supine view and an upright view (which are sufficient to detect air-fluid levels), although a lateral decubitus could be substituted for the upright.

Coverage on the x-ray should include from the top of the Liver (or

bladder
.

KUB

fecal matter
(stool is opaque white (not to be confused with white opaque skeletal mass and muscle mass) surrounded by black bowel gas

KUB stands for

Bladder. The KUB projection does not necessarily include the diaphragm. The projection includes the entire urinary system, from the pubic symphysis to the superior aspects of the kidneys. The anteroposterior (AP) abdomen projection, in contrast, includes both halves of the diaphragm.[4][5]
If the patient is large, more than one film loaded in the Bucky in a "landscape" direction may be used for each projection. This is done to ensure that the majority of bowel can be reviewed.

A KUB is a plain frontal supine radiograph of the abdomen. It is often supplemented by an upright PA view of the chest (to rule out air under the diaphragm or thoracic etiologies presenting as abdominal complaints) and a standing view of the abdomen (to differentiate obstruction from ileus by examining gastrointestinal air/water levels).

Despite its name, a KUB is not typically used to investigate pathology of the kidneys, ureters, or bladder, since these structures are difficult to assess (for example, the kidneys may not be visible due to overlying bowel gas.) In order to assess these structures radiographically, a technique called an

intravenous pyelogram was historically utilized, and today at many institutions CT urography is the technique of choice.[6]

KUB is typically used to investigate gastrointestinal conditions such as a bowel obstruction and

kidney stones
. The KUB is often used to diagnose constipation as stool can be seen readily. The KUB is also used to assess positioning of indwelling devices such as ureteric stents and nasogastric tubes. KUB is also done as a scout film for other procedures such as barium enemas.

Gastrointestinal series

Main articles: Upper gastrointestinal series and Lower gastrointestinal series

An

contrast medium, usually a radiocontrast agent such as barium sulfate
barium salt mixed with water, is ingested or instilled into the gastrointestinal tract, and X-rays are used to create radiographs of the regions of interest. The barium enhances the visibility of the relevant parts of the gastrointestinal tract by coating the inside wall of the tract and appearing white on the film.

A lower gastrointestinal series is where radiographs are taken while barium sulfate, a radiocontrast agent, fills the colon via an enema through the rectum. The term barium enema usually refers to a lower gastrointestinal series, although enteroclysis (an upper gastrointestinal series) is often called a small bowel barium enema.

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See also

References

  1. ^ a b c d e "Radiology - Acute indications". Royal Children's Hospital, Melbourne. Retrieved 2017-07-23.
  2. PMID 22807640
    .
  3. ^ "Abdomen X-ray system and anatomy - Image data and quality". Radiology Masterclass. Retrieved 27 January 2016.
  4. ISBN 978-0-323-07334-9
    .
  5. ISBN 978-0-323-02507-2
    .
  6. ^ Paul Schmitz, MD, et al. Medscape. Kidneys, ureters, and bladder imaging: plain films of the abdomen. Updated 27 Aug 2015.
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