Ultrafast CT Scan for Children
What is an ultrafast CT scan for children?
An ultrafast computed tomography (CT) scan is an imaging test that uses X-rays and
a computer to look at your child’s heart. The scan takes pictures very quickly. It
gives the healthcare provider many details about your child’s heart that other imaging
tests can’t.
Standard X-rays use a small amount of radiation to create images of bones and organs.
These X-rays are useful to help diagnose illness. But many details about internal
organs and other structures can’t be seen.
With a CT scan, the X-rays move around the body. This gives many views of the same
organ or structure in much greater detail. The X-ray information is sent to a computer.
The computer makes a 2-D image that your healthcare provider can look at. IV contrast
dye may also be used to make details show up better in the scan.
An ultrafast CT scan shows the healthcare provider even more details about the heart’s
structure and how well it is working. It also can be done in much less time than a
regular CT scan.
Why might my child need an ultrafast CT scan?
A child may need an ultrafast CT scan to check for:
Your child’s healthcare provider may have other reasons to order an ultrafast CT scan.
What are the risks of an ultrafast CT scan for a child?
Risks include:
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Radiation exposure from X-rays. But the amount of radiation exposure from a CT scan
is relatively low.
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Reaction to sedative or anesthesia, such as headaches, shivering, and vomiting
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Allergic reaction to contrast dye, such as hives, itching, or wheezing
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In rare cases, kidney damage from IV contrast dye
How do I help my child get ready for an ultrafast CT scan?
You can help your child by preparing them in advance. How you do this depends on your
child’s age and needs. Many hospitals have people trained in helping children cope
with their medical care or hospital experience. These people are often called child
life specialists. Check with your child’s healthcare provider to see if child life
programs or other similar services are available for your child.
Here are things you can do to help your child prepare:
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Use short and simple terms to describe the test to your child and why it’s being done.
Younger children tend to have a short attention span, so do this just before the test.
Older children can be given more time to understand the test in advance.
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Tell your child what to expect in the hospital during the test. For instance, you
could talk about who will be giving them the test and what the hospital room will
look like.
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Make sure your child understands which body parts will be involved in the test.
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As best you can, describe how the test will feel. For instance, if your child is awake
during the test, they may feel some discomfort or pressure when the needle is inserted.
Reassure your child that this discomfort won’t last long.
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Allow your child to ask questions and answer these questions truthfully. Your child
may feel nervous or afraid. They may even cry. Let your child know that you’ll be
nearby during the test.
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Use play when telling your child about the test, if appropriate. With younger children,
this can involve role-playing with a child’s favorite toy or object. With older children,
it may help to read books or show pictures of what happens during the test.
Also make sure to:
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Follow all directions given by the healthcare provider to prepare your child for the
test.
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See that your child does not eat or drink for a certain number of hours before the
test, if contrast dye will be used during the test.
And tell your child’s healthcare provider if your child:
What happens during an ultrafast CT scan for a child?
The test takes about 30 to 60 minutes. Some may take longer. You may be able to stay
with your child in the CT room. Or you may be asked to wait in another area during
the test.
A CT scan is done by a radiology technologist. A radiologist is on call in case of
problems. This is a healthcare provider trained to use CT or other imaging methods
to test or treat patients.
During the test:
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Your child lies on a narrow table that slides into the CT scanner.
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Your child will need to lie still during the scan. Movement affects the quality of
the images and can even need a repeat scan. Your child may be restrained or given
medicine to relax (sedative) or sleep (anesthesia). The sedative is taken by mouth
or given through an IV. A nurse helps with this process.
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The technologist is nearby and watches your child through a window. If your child
is awake, they can speak to and hear the technologist through a speaker inside the
scanner.
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Contrast dye may be used to improve image results. Your child is given contrast dye
by mouth or an IV line.
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Once the scan begins, your child will need to lie very still at all times. At times,
they will be told to hold their breath for a few seconds.
What happens after an ultrafast CT scan for a child?
Once the test is finished, the table will slide out of the scanner. A child who received
medicine to relax or sleep will be watched until the medicine wears off and they are
awake again. If an IV was inserted, it will be taken out after the test is over and
your child is awake.
If no sedation was used, your child can go back to normal activities and diet right
away, unless the healthcare provider says otherwise. Contrast dye should pass through
your child’s body in about 24 hours. Your child may need to drink more water during
this time.
If your child had sedation, they may feel sleepy for a while. This should go away
in a few hours or a day.
Your child’s healthcare provider will talk with you about the results of the CT scan
and let you know if other tests are needed.
Next steps
Before you agree to the test or procedure for your child make sure you know:
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The name of the test or procedure
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The reason your child is having the test or procedure
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What results to expect and what they mean
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The risks and benefits of the test or procedure
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When and where your child is to have the test or procedure
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Who will do the procedure and what that person’s qualifications are
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What would happen if your child did not have the test or procedure
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Any alternative tests or procedures to think about
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When and how you will get the results
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Who to call after the test or procedure if you have questions or your child has problems
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How much you will have to pay for the test or procedure