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What is a head CT scan?

A head CT scan is a special x-ray that provides information about the brain.  It uses computed tomography (CT) technology--also called computed axial tomography (CAT)--to provide multiple views of the blood vessels, brain tissue, and skull. The CT scan involves the use of ionizing radiation to provide these images. The radiation dose you are given is higher than what you would receive from a regular x-ray, but it also provides more information to your doctor than a regular x-ray. 

When you have the head CT scan, you will be positioned on a narrow moving table that slides through an open doughnut-shaped machine that generates the images.  This is not an enclosed tunnel.  You may hear whirring noises during the test while it takes the images.

In some cases, you will not need to have an IV (intravenous) line inserted.  This is called a head CT without contrast.  However, if you are scheduled for a head CT with contrast, you will have an IV line inserted by a health care worker who will inject iodine into the IV.  Iodine helps highlight the blood vessels and other structures within the brain and gives more detailed images of the brain structures.  This chemical is removed naturally after the exam by the kidneys.

* Savings estimate based on a study of more than 1 billion claims comparing self-pay (or cash pay) prices of a frequency-weighted market basket of procedures to insurer-negotiated rates for the same. Claims were collected between July 2017 and July 2019. R.Lawrence Van Horn, Arthur Laffer, Robert L.Metcalf. 2019. The Transformative Potential for Price Transparency in Healthcare: Benefits for Consumers and Providers. Health Management Policy and Innovation, Volume 4, Issue 3.

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Your actual costs may be higher or lower than these cost estimates. Check with your provider and health plan details to confirm the costs that you may be charged for a service or procedure. You are responsible for costs that are not covered and for getting any pre-authorizations or referrals required by your health plan. Neither payments nor benefits are guaranteed.

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