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Alternative names Return to top
Spinal CT; CT - lumbosacral spineDefinition Return to top
A lumbosacral spine CT involves computed topography (CT) of the lower spine and surrounding tissues.How the test is performed Return to top
The CT is performed with the patient on his or her back.
In some cases, an iodine-based contrast dye may be injected into a vein to help visualize tissues. In other cases, a CT of the lumbosacral spine may be performed after injecting contrast dye into the spinal canal during a lumbar puncture to further evaluate for nerve root compression.
The scan will last less than a few minutes.
How to prepare for the test Return to top
The patient should remove all jewelry or other metals that may cause artifact in the images.
Infants and children:
The physical and psychological preparation you can provide for this or any test or procedure depends on your child's age, interests, previous experiences, and level of trust. For specific information regarding how you can prepare your child, see the following topics as they correspond to your child's age:
How the test will feel Return to top
The X-rays are painless. The primary discomfort may be from the need to lie still on the table.
If intravenous contrast dye is given, the patient may initially feel a slight burning sensation within the injected arm, a metallic taste in the mouth, and a warm flushing of the body. These sensations are normal and usually reside within a few seconds.Why the test is performed Return to top
A CT scan is an excellent tool for evaluating fractures and degenerative changes of the spine (such as from arthritis). MRI is a superior exam for imaging the spinal cord and intervertebral discs.
What abnormal results mean Return to top
Conditions that may be revealed include:What the risks are Return to top
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Page last updated: 28 October 2004 |