|CT Scan of the Head|
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Reasons for Test
What to Expect
Prior to Test
- Avoid eating or drinking anything for 4 hours before the test if contrast will be used.
- Remove any metal objects, such as jewelry, hearing aids, or dentures.
Description of the Test
How Long Will It Take?
Will It Hurt?
Call Your Doctor
- Swollen, itchy eyes
- Tightness of throat
- Difficulty breathing
American Cancer Society http://www.cancer.org
Radiological Society of North America http://www.radiologyinfo.org
Canadian Association of Radiologists http://www.car.ca
Canadian Radiation Protection Association http://www.crpa-acrp.org
Brenner DJ. Should we be concerned about the rapid increase in CT usage? Rev Environ Health. 2010;25(1):63-68.
Computed tomography (CT)—Head. Radiology Info.org—Radiological Society of North America website. Available at: http://www.radiologyinfo.org/en/info.cfm?pg=headct. Updated February 12, 2014. Accessed January 26, 2015.
Positron emission tomography—computed tomograpy (PET/CT). Radiology Info.org—Radiological Society of North America website. Available at: http://www.radiologyinfo.org/en/info.cfm?pg=PET. Updated March 28, 2013. Accessed January 26, 2015.
- Reviewer: Michael Woods, MD
- Review Date: 01/2015 -
- Update Date: 06/24/2013 -