 |
|
Myelogram
A myelogram is more invasive than a MRI, but is sometimes necessary to more
accurately diagnose the patient’s condition. A CT
scan is often performed
at the same time as the myelogram in order to gather even more information.
During a myelogram, special dye that shows up on X-rays is injected into the
spinal column. The X-rays are then compiled into an image of the flow of fluid
around your spinal column. Any decrease or blockage in the flow may indicate
pressure on the nerves of the spine, possibly from a herniated
disc or bony
spur, or, less often, a tumor.
Administering the test involves
lying on a X-ray table, where you are given a local anesthetic
to numb the area. Then, a needle is placed into the area near
your spine, dye is injected and finally the X-rays are taken.
The test will take about an hour to complete. Afterwards, you
may be taken for a CT scan, which can provide additional information
that the myelogram may not find. For example, if a piece of disc
has broken off and is pressing on a nerve somewhere other than
its root, a CT-scan may detect it.
You won’t be able to eat solid
foods after midnight the night before your test, but please drink
plenty of fluids such as water or juice in order to be well hydrated.
However, you will need to stop drinking fluids three hours beforehand.
Ask your physician about any medications you may be taking. After
your myelogram, you will need plenty of rest, and you cannot
drive yourself home.
The doctor will discuss the risks
of the myelogram, which are small but include itching around
the puncture site, infection and allergic reactions. You may
develop a headache either several hours or several days after
the test. This is usually caused by a change in the pressure
of the cerebral spinal fluid and should be cured with rest and
plenty of fluids.
Back
to top
|
 |