Abdominal CT scan

Injury	Disease	Nutrition	Poison

Symptoms	Surgery	Test	Special Topic

Abdominal CT scan

Definition:

An abdominal CT scan involves X-ray images of the abdomen from many angles. The X-ray beams are detected by the scanner and analyzed by a computer. The computer reconstructs the data into a picture of the body area being scanned. These images can be viewed on a monitor or reproduced as photographs.

How the test is performed:

text continues below

The CT scanner is a free-standing machine with a large hole in the center. The patient lies on a narrow table that slides into the hole. In most cases the patient will be on his or her back with arms raised above his head. Patients who have difficulty with enclosed spaces such as those found with some MRI scanners do not usually have a problem with this type of test.

A dye may be injected into a peripheral vein to better evaluate certain diseases and organs. The radiologist will decide if this is necessary. Tell the technician or radiologist if you have any allergies or have had difficulty with prior CT scans.

It is very important that the patient remains still throughout the exam and holds his or her breath when asked. This will allow for better images.

The actual scan time is usually about two minutes, although the entire procedure usually takes much longer.

How to prepare for the test:

Tell the health care provider if you have any allergies or have had difficulty with prior CT scans.

You may be advised to fast for 4 to 6 hours if contrast dye or sedation is to be used.

You will be given a hospital gown to wear during the procedure. You may be asked to sign a consent form.

For infants and children:

The preparation you can provide for this test depends on your child's age and experience. For specific information regarding how you can prepare your child, see the following: