Test Overview A CT scan uses X-rays to make detailed pictures spine and vertebrae
During the test, you will lie on a table that is attached to the CT scanner, which is a large doughnut-shaped machine. The CT scanner sends X-rays through the body. Each rotation of the scanner takes a second and provides a picture of a thin slice of the organ or area being studied. One part of the scanning machine can tilt to follow the curve of your spine. All of the pictures are saved as a group on a computer. They also can be printed.
In some cases, a dye called contrast material I.V. tumours inflammation
Why It Is Done
A CT scan
Look at the bones of the spine (vertebrae). Find problems of the spine, such as tumours, fractures, deformities, infection, or narrowing of the spinal canal (spinal stenosis Find a herniated disc Check to see if osteoporosis compression fractures Check on problems of the spine that have been present since birth (congenital). Look at problems seen during a standard X-ray test. Check how well spinal surgery or therapy is working for a spine problem. How To Prepare
In general, there's nothing you have to do before this test, unless your doctor tells you to.
Tell your doctor if you get nervous in tight spaces. You may get a medicine to help you relax. If you think you'll get this medicine, be sure you have someone to take you home.
Load More Information about Computed Tomography (CT) Scan of the Spine
How It Is Done
You may need to take off any jewellery. You will need to take off all or most of your clothes, depending on which area is studied. You may be able to wear your underwear for some scans. You will be given a gown to use during the test.
You may have contrast material (dye) put into your arm through a tube called an I.V.
During the test, you will lie on a table that is attached to the CT scanner.
The table slides into the round opening of the scanner, and the scanner moves around your body. The table will move while the scanner takes pictures. You may hear a click or buzz as the table and scanner move. It is very important to lie still during the test.
During the test, you may be alone in the scanning room. But a technologist will watch you through a window and talk with you during the test.
How long the test takes The test will take about 30 to 60 minutes. Most of this time is spent getting ready for the scan. The actual test only takes a few minutes.
Watch How It Feels
The test will not cause pain, but some people feel nervous inside the CT scanner.
If a medicine to help you relax (sedative) or dye is used, you may feel a quick sting or pinch when the I.V. is started. The dye may make you feel warm and flushed and give you a metallic taste in your mouth. Some people feel sick to their stomach or get a headache. Tell the technologist or your doctor how you are feeling.
Risks
The chance of a CT scan causing a problem is small.
There is a chance of an allergic reaction to the contrast material. If you breastfeed and are concerned about whether the contrast material used in this test is safe, talk to your doctor. Most experts believe that very little dye passes into breast milk and even less is passed on to the baby. But if you are concerned, you can stop breastfeeding for up to 24 hours after the test. During this time, you can give your baby breast milk that you stored before the test. Don't use the breast milk you pump in the 24 hours after the test. Throw it out. There is a small chance of an infection at the needle site on your spine or bleeding into the space around the spinal cord. There is a risk of damage to cells or tissue from being exposed to radiation, including the small amounts used in CTs, X-rays, and other medical tests. Over time, exposure to radiation may cause cancer and other health problems. But in most cases, the risk of getting cancer from being exposed to small amounts of radiation is low. It is not a reason to avoid these tests for most people. Results
Complete results usually are ready for your doctor in 1 to 2 days.
CT scan of the spine Normal:
Spinal bones (vertebrae
The discs and joints that support the spine are normal.
The spinal canal is normal in size and shape.
If contrast material
None of the nerves leaving the spinal cord are compressed or pinched. No growths or bulges are present.
Abnormal:
Spinal bones (vertebrae) are missing, damaged, or out of alignment.
One or more discs may be damaged. One or more herniated discs
The flow of contrast material through the spinal canal is restricted or blocked, which may mean narrowing of the canal (spinal stenosis
The vertebrae show signs of arthritis osteoporosis
A condition that has been present from birth (congenital) is present in the spine or the vertebrae.
An abscess spinal tumour
Related Information
Credits
Current as of: July 31, 2024
