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    What does a CT scan of the Sinuses show?

    Posted by Ravi Sohal on Wed, Apr 14, 2010

    ct scan sinusCT scans are frequently used to evaluate the sinuses, also called the paranasal sinuses. This test is frequently ordered to look for sinus disease. On your doctor's order you may see "r/o sinus disease", "h/o sinus disease", "allergy, cough, rhinitis"

    (FYI - "r/o" is short for "rule out" and "h/o" stands for "history of")

    A CT scan of the sinuses is usually ordered for sinus infection but is also done as part of a preoperative evaluation for sinus surgery. Sinus CT scans can also pick up tumors of the sinuses as well.

    A CT scan of the sinuses will evaluate:

    Sinus cavities

    These are the air filled boney structures that make up the sinuses.  They are called the maxillary sinus, ethmoid air cells, frontal sinus and sphenoid sinus. All of these ultimately communicate with the nasal cavity via various passages and channels. If these passages are blocked, the normally secreted mucus can't escape and builds up causing pressure and pain.

    Sinus Mucosa

    The sinus cavities are lined by a thin layer of tissue called "mucosa". This tissue produces mucus. The mucosa can become inflamed causing symptoms related to sinusitis - pressure, pain, and sinus discharge for example.

    Nasal Cavity

    The nasal cavity contains boney structures called turbinates which are lined by mucosa as well. This tissue can become inflamed and give rise to nasal polyps which can cause stuffiness and difficulty breathing (through the nose).

    Other structures

    Other parts of the bones and tissues near your sinuses are included in a CT scan of the sinuses. These include the eyes, jaw bones, mouth and parts of the skull.

    Your Sinus CT Scan

    A sinus CT generally takes about 5 minutes or so to complete.  This scan can be done either laying flat on your back or on your stomach with your chin propped up by a soft pad.

    If you're insured, you may need to have your test authorized (approved) by your insurance company first. If you're uninsured  use our website to look up CT sinus scan costs, find a certified imaging center and buy your test with a credit card.

    Have you had a Sinus CT scan? What was it like? Please leave your comments below.



    I had a ct scan before my balloon sinuplasty procedure. They used it to determine if my chronic sinusitis needed further attention, which it did. The scan was no big deal. 

    posted @ Thursday, April 15, 2010 4:46 PM by Amy

    I will need a ctt synuses test, I had two paranasal tomographies done , I don´t know if theres is any difference among the two tests of if they are the same, I may need a surgery, the two I have done before show the same findins, sinusitis, even I had two antibiotivc treatments.

    posted @ Wednesday, March 30, 2011 10:51 AM by Herceny

    It was boring. And I had to have not only my sinuses but my entire brain,and head. It was long and boring. And it made me tired from laying down so long.

    posted @ Friday, January 06, 2012 11:23 PM by Emalee

    do you have to get a iv for a ct can

    posted @ Tuesday, May 06, 2014 3:20 PM by tiffany

    It was really no big deal. You just lie down comfortably, with headphones for music of your choice, they took several scans, and the whole thing from start to finish was only 20 minutes. Slightly loud, but that's what the headphones are for! Piece of cake! :)

    posted @ Thursday, July 30, 2015 11:00 AM by Mel Watrous

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