CT Scan of the Abdomen
(Abdominal CT)En Español (Spanish Version)
A CT scan is an x-ray that makes cross-sectional images. In this case, the images are focused in the abdomen.
CT Scan at Kidneys
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Reasons for Procedure
A CT scan is done to study the organs and vascular system for signs of injury, tumors, or other disease.
Your doctor may recommend an abdominal CT if you have the following symptoms:
- Bowel changes
- Blood in the urine or stool
- Urinary difficulties
- Weight loss
- Unexplained fever
- Abdominal injury
- Fluid accumulation in the abdomen
Many conditions and diseases can be diagnosed with an abdominal CT. These include:
Risk Factors for Complications During the Procedure
A contrast dye is sometimes used. The dye can lead to the worsening of your renal or kidney function. Previous allergic or anaphylactic response to contrast dye is another complication.
If you are pregnant your doctor may choose a different radiological study to limit the exposure to x-rays.
What to Expect
Prior to Procedure
You may be given a contrast dye. If this is the case, do not eat or drink anything for four hours before your exam.
You will need to wear a hospital gown. You will also need to remove anything containing metal from your head and neck, including jewelry, false teeth, glasses, and hair barrettes.
If a contrast dye is needed, it will be given in a barium solution drink or it will be injected into a vein. You'll be positioned on a special movable table part-way inside the CT scanner.
Description of the Procedure
The table advances you very slowly through the CT scanner. You'll need to be very still during the entire test. As the scanner takes pictures, you'll hear some humming and clicking. The technician will ask you to hold your breath at certain points so that the picture is not blurred by movement. You are able to talk to the technician and/or doctor during the exam. If you are in pain, frightened, or concerned in any way, you can talk with them.
If you've received contrast dye, drink extra fluids to more quickly flush it out of your body.
How Long Will It Take?
It may take 10-60 minutes. The length depends on how much area must be scanned and how much detail is needed.
Will It Hurt?
The scan itself will not hurt, although you may feel restless. When you receive an injection of contrast dye, you may feel flushed. You may also notice a salty or metallic taste in your mouth. Some people experience brief nausea as the dye circulates.
- Allergic or anaphylactic response to contrast dye
Average Hospital Stay
Your doctor should be able to spot any abnormalities in the organs and/or tissues within your abdomen.
Call Your Doctor If Any of the Following Occurs
You have had contrast dye and notice:
- Swollen, itchy eyes
- Tightness of throat
- Difficulty breathing
Center for Devices and Radiological Health
Radiological Society of North America
About Kids Health
Canada Diagnostic Centres
CT-scan. Mayo Clinic website. Available at: http://www.mayoclinic.com/health/ct-scan/FL00065. Accessed October 15, 2007.
Rydberg, J, Buckwalter KA, Caldemeyer KS, et al. Multisection CT: scanning techniques and clinical applications. Radiographics. 2000; 20:1787.
Zater BL, et al. Yale University School of Medicine Patient's Guide to Medical Tests. Boston, MA: Houghton Mifflin;1997.
Last reviewed October 2007 by Marcin Chwistek, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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