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Lumbosacral spine X-ray

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Skeletal spine Vertebra, lumbar (low back) Vertebra, thoracic (mid back) Vertebral column Sacrum Posterior spinal anatomy

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Lumbosacral spine X-ray

Definition:

An X-ray of the lumbosacral spine involves capturing images of the 5 lumbar vertebrae and the 5 small fused vertebrae (sacrum).

Alternative Names:
X-ray - lumbosacral spine; Myelography

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How the test is performed:

The test is performed in a hospital radiology department or in the health care provider's office by an X-ray technician. You will be asked to lie on the X-ray table and assume various positions. If the X-ray is to determine injury, care will be taken to prevent further injury.

The X-ray machine will be positioned over the lumbosacral area of the spine. You will be asked to hold your breath as the picture is taken so that the picture will not be blurry. Usually 3 to 5 pictures are taken.

A myelogram is an X-ray or CT scan of the spine that is performed after dye has been injected into the spinal fluid. (See lumbar puncture.)

How to prepare for the test:

Inform the health care provider if you are pregnant. Remove all jewelry.

For infants and children:

The preparation you can provide for this test depends on your child's age and experience. For specific information regarding how you can prepare your child, see the following:

• Infant test or procedure preparation (birth to 1 year)
• Toddler test or procedure preparation (1 to 3 years)
• Preschooler test or procedure preparation (3 to 6 years)
• Schoolage test or procedure preparation (6 to 12 years)
• Adolescent test or procedure preparation (12 to 18 years)

How the test will feel:

There is generally no discomfort associated with an X-ray, although the table may be cold.

Why the test is performed:

Lumbosacral spine X-ray helps evaluate back injuries and persistent numbness, low back pain, or weakness.

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