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Medical Video: How to prepare for a CT scan
Definition
What is a lumbar scan CT?
Computed tomography (CT) scans, more commonly called CAT scans, are X-ray types that produce cross-sectional images of specific body parts. In the case of CT scans of the lumbar spine, the doctor can see the cross section of the lower back. The scan engine encircles the body and sends images to a computer monitor, where they are reviewed by a technician.
The lumbar spine is a common area where back problems arise. The lumbar spine is the lowest part of the spine, and is composed of 5 vertebrae bones, including the cranial bone and tailbone. Large blood vessels, nerves, tendons, ligaments, and cartilage are also part of the lumbar spine.
When do I need to undergo a lumbar CT scan?
CT quickly makes detailed lower back images. Tests may be useful for searching:
- birth abnormalities on the child's backbone
- lower back injury
- back problems if MRI cannot be used
This test can also be used during or after a spine x-ray and spinal nerve root (myelography) or X-ray disk (discography).
Prevention & warning
What should I know before undergoing a lumbar CT scan?
Sometimes your test results may differ from the results of other types of X-ray tests, MRI, or ultrasound scans, because CT scans give a different view. Children who need a CT scan may need special instructions for testing. If the child is too young to survive or if he feels afraid, the doctor may give medication (sedative) to help the child relax. If the child is scheduled for a CT scan, talk to the pediatrician about the need for a scan and the risk of radiation exposure to the child. MRI may provide more information than CT scans about the spinal disk and backbone. When a CT scan of the spine is done with a myelogram, this is called a CT myelogram. MRI of the spine is often used instead of myelogram CT.
Process
What should I do before undergoing a lumbar CT scan?
CT scan of the lumbar spine is a non-invasive test. You may wear clothes that are loose and comfortable because you will have to lie on the table. You will also be told to remove the jewelry and other metal objects from the body. Know your doctor if you have a metal implant from the previous procedure.
Before a CT scan, tell the doctor if you have the following conditions:
- oral contrast allergy (barium)
- diabetes, because fasting might reduce blood sugar levels
- pregnant
What is the lumbar CT scan process?
You will be asked to lie on a narrow table that shifts to the center of the CT scanner. Once you are inside a scanner, an X-ray machine rotates around you. (modern 'spiral' scanners can check without stopping). The computer creates a separate image of the spine area, called a cut. This image can be saved, displayed on the monitor, or printed on film. The model of a three-dimensional backbone can be created by adding concurrent pieces. You have to survive, don't move during the inspection. Movement can provide blurry images. You may be told to hold your breath for a short period of time. After several scan rounds, you may be asked to wait while the technician reviews the image to make sure the image is clear enough so the doctor can read it correctly. The scan only takes 10-15 minutes.
What should I do after a lumbar CT scan?
After the test, you can change your clothes again with casual clothes and return to your activities. The results of CT scans generally take a day to process. The doctor will schedule the next meeting to discuss the results of the scan and tell you how to proceed depending on the findings. The doctor may order an image scan, additional blood tests, or other diagnostic measurements to help you get an accurate diagnosis and start treatment.
Explanation of Test Results
What do the test results mean?
Normal results
Results are considered normal if there are no problems seen in the image of the lumbar area.
Abnormal results
Abnormal results may result:
- birth abnormalities in the spine
- bone problem
- cracked
- lumbar disc hernia
- stenosis of the lumbar spine
- spondylolisthesis
Hello Health Group does not provide medical advice, diagnosis or treatment.
