Computed Tomography (CT) Scan of the Spine
How It Is Done continued...
The test will take about 30 to 60 minutes. Most of this time is spent getting ready for the scan. The actual scan only takes a few seconds.
A standard CT
scan may be done before the contrast material for a CT
myelogram is given. The dye is usually put in the space around your spinal cord. A sample of
the fluid from the spinal canal (cerebrospinal fluid) may be taken out
so other tests can be done on it.
If dye is
placed in your back, you will lie on your stomach or on your side on a table. The dye is usually put in your lower
back but may be put in at the base of your skull. The skin over the site may be
shaved. It will be cleaned. The area around the site may be
numbed with medicine.
The table may be tilted or you may be moved
into different positions so the dye moves to different areas of the
You need to lie very still so the dye stays in the right
place for clear pictures. Your pulse, breathing rate, and blood pressure may be
checked during the test.
In some cases, the dye can also be put in
a vein (IV) in your arm.
A CT scan with contrast material
usually takes 15 to 30 minutes. Drink lots of liquids for
24 hours after the scan to help flush the dye out of your body.