Risks

You'll be exposed to some radiation during the test. The amount varies depending on the type of machine used. The risk of developing cancer from a CT angiogram isn't known, but it's small. However, you shouldn't have a CT angiogram if you're pregnant because of possible harm to your unborn child.

It's possible that you could have an allergic reaction to the dye used in the procedure. Talk to your doctor if you're concerned about having an allergic reaction.

May 26, 2017
References
  1. Cardiac CT. National Heart, Lung, and Blood Institute. http://www.nhlbi.nih.gov/health/health-topics/topics/ct/. Accessed Feb.1, 2017.
  2. Gerber TC, et al. Noninvasive coronary imaging with cardiac computed tomography and cardiovascular magnetic resonance. http://www.uptodate.com/home. Accessed Feb. 1, 2017.
  3. AskMayoExpert. Coronary CT angiography. Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2016.
  4. Coronary angiography. National Heart, Lung, and Blood Institute. https://www.nhlbi.nih.gov/health/health-topics/topics/ca. Accessed Feb. 2, 2017.
  5. Coronary computed tomography angiography (CCTA). RadiologyInfo.org. http://www.radiologyinfo.org/en/info.cfm?pg=angiocoroct. Accessed Feb. 1, 2017.
  6. Douglas PS. Screening for coronary heart disease. http://www.uptodate.com/home. Accessed Feb. 1, 2017.
  7. 2008 Physical Activity Guidelines for Americans. U.S. Department of Health and Human Services. http://www.health.gov/PAGUIDELINES/guidelines/default.aspx. Accessed Feb. 1, 2017.
  8. Eckel RH, et al. 2013 AHA/ACC guideline on lifestyle management to reduce cardiovascular risk. Journal of the American College of Cardiology. 2014;63:2960.