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Lumbosacral spine X-ray    See images

Overview | Risks | Results

Alternative names:

X-ray - lumbosacral spine; Myelography

Definition:

An X-ray of the lumbosacral spine involves the 5 lower back (lumbar) vertebrae and the 5 small fused vertebrae (sacrum). The vertebrae are separated by flat pads of cartilage that cushion the vertebrae and allow movement.

A myelogram involves X-rays or a CT scan of the spine after dye has been inserted into the spinal fluid. A lumbosacral spine X-ray is one of the most common X-rays involved with a myelogram.

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 the document on lumbar puncture for more information about the dye insertion portion of this procedure.

How to Prepare for the Test

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

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:

• 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 no discomfort associated with the X-ray. The table may be cold.

Why the Test is Performed

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

Ency. home > Test > L > Lumbosacral spine X-ray

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