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Why would I
need a CT scan?
A CT scan is a valuable tool if your doctor has determined
that he needs a better look inside your sinuses. This
may be because you have chronic sinus problems, persistent
headaches, impaired breathing or a history of frequent
sinus infections. CT scans are helpful tools for studying
internal organs. Typically they are used to examine
the head, sinuses, lungs, abdomen and pelvis, but they
can also detect vascular problems, measure bone density
and study the heart. The results of your CT scan will
help the doctor decide if further procedures are necessary.
And if it points to a diagnosis, the scan can help the
doctor determine the best way to treat your condition.
What does a
CT scan show?
In a CT scan image (which looks similar to an x-ray),
bone appears white, air appears black, and any soft
tissue, fluid or muscle appears in varying shades of
grey. A CT scan of your sinuses will show whether you
have a sinus infection. Sinusitis appears in the image
as a thickening of the lining of the sinus cavities.
A CT scan of your sinuses will also show:
• Any obstruction of your breathing passages
• A deviated septum
• Tiny fractures in nasal and sinus bones
• Growths such as polyps, tumors, etc.
A CT scan also serves as a "road map" of your
sinuses that the doctor can follow if you require sinus
surgery.
How does CT
scanning work?
Also called Computed Tomography, CT scanners combine
traditional x-ray technology with a computer that analyzes
images. As you pass through the machine, an x-ray rotates
360 degrees to capture images of your body in slices.
These cross-sections are what make CT scans so effective.
When a doctor looks at a CT image, he or she can see
each of the organs clearly, without any "overlap"
from other organs.
Why should
I have a CT scan instead of an x-ray?
Because x-rays show dense bone structures only, and
not soft tissue.
What does a
CT scan feel like?
The CT scanner is a large machine with a circular opening
and a table that runs through it. During your exam,
you will lie on this table as it moves through the opening.
The exam is totally painless. You will need to stay
very still and hold your breath at times, while the
machine captures images. Our scanner is extremely fast,
so the exam may take as little as 2 minutes. A certified
CT Technologist will perform the test. Feel free to
ask the technologist any questions about the exam.
Are there any
risks involved?
Like x-rays, CT scans expose you to radiation. Pregnant
women or those who might be pregnant should inform their
doctor before receiving a CT scan. If your doctor has
told you that he wants to do a CT scan "with contrast,"
this means that you will be given an agent such as iodine
dye that is used to highlight specific areas within
the scan. Make sure to tell you doctor in advance if
you have any allergies, especially to iodine or shellfish.
Will my insurance
cover a CT scan?
Most insurance plans will cover all or a percentage
of the cost of scans ordered by your doctor. Typically,
insurance plans will not cover the costs for screening
exams, such as a full body scan. Contact your insurance
company directly for more information. One of the insurance
experts at our office may also be able to give you more
details about what your plan would cover.
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Northwestern Nasal + Sinus
676 North Saint Clair, Suite 1575
Chicago, Illinois 60611 |
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