imaging diagnosis method, which is similar to traditional X-rays, is used to produce multiple images of the body parts.
CT PNS creates images, which can be viewed from different angles and even in 3D. Doctors can check these images on computers and print or save them on a CD/DVD. CT scans are more detailed than regular X-rays, especially for blood vessels and soft tissues.
Through this scan, the paranasal sinus cavities of a person can be seen. These cavities are air-filled spaces that surround the nasal cavity inside the facial bones. Overall, four sinus pairs are individually connected to the nasal cavity through tiny openings that form a system of air channels.
Why do You Need a Sinus CT PNS?
A sinus CT scan is used for:
- Diagnosing sinusitis
- Preparing for surgery by defining anatomy
- Identifying inflammatory diseases
- Providing extra data about tumors in the nasal cavity/sinuses
- Checking fluid or thickened sinus membranes
Preparation
Here are some general guidelines for preparing for the CT PNS test.
- Wear loose-fitting, comfortable clothes. You might need to put on a hospital gown for the scanning.
- Remove metal objects, jewelry, eyeglasses, dentures, hairpins, hearing aids, dental work, piercings, and bras with metal underwires if possible, as they may affect the CT images.
- If the exam uses contrast material, don’t drink or eat any food or beverage, respectively, for a specified amount of time before the test as instructed by the doctor. Inform your healthcare provider about your medications and allergies. If you’re allergic to the contrast material, the healthcare provider can give you medications accordingly to lower the risk of this allergic reaction. Contact your doctor before the exam to avoid delays.
- You should communicate with your doctor if you have had any recent ailments. If you have asthma, heart disease, diabetes, or other serious health problems, you can also inform them as one of these conditions can elevate the risk of a negative effect of the test.
How is CT PNS Performed?
Here are some steps defining the procedure of the CT scan of the nose.
- The technologist positions the patient on the CT examination table.
- For the CT scan of the nose, patients are positioned lying flat on their back or face-down with an elevated chin.
- Straps and pillows help patients remain in the appropriate position during the test.
- The contrast material may be injected through an IV line into some patients.
- The table moves in the scanner quickly to identify the starting position and slowly to run the CT scan.
- Patients may be asked to hold their breath while they are being scanned.
- The technologist verifies the quality of images before the exam is complete.
- The entire sinus CT scan process usually takes less than 10 minutes.
Results
A radiologist, a doctor who interprets radiology exams, will examine the images and send a report to your doctor.
Your doctor may suggest a follow-up exam to investigate a potential issue further. CT scan for sinuses may involve additional views or a special imaging technique, and it can be used to determine if there have been any structural changes over time. Follow-up exams can help monitor treatment progress and detect any problems that may require attention.
