If you are suffering from chronic sinus infections and bloody noses, or if your doctor thinks you could have an injury, structural defect, or illness affecting your sinuses, he or she may refer you for a CT scan in San Antonio of your sinuses. If you’ve never had this kind of medical imaging test before, you may be wondering what to expect. Here is what you need to know.
Preparing for Your Scan
In some cases, it may not be necessary to do anything to prepare for the scan. If the imaging center will be using contrast dye for your scan, you may be asked to avoid eating or drinking anything for a set period of time. Be sure to verify with the imaging center before the day of your scan, to avoid any delays. If you have had an allergic reaction to contrast dye in the past or have a shellfish allergy, you should also let the imaging center know, as you may need to take a medication to prevent any potential reaction from occurring. You may also need to take precautions or avoid contrast if you have kidney problems or if you take the medication metformin.
During the Scan
If you are receiving contrast dye, it will be injected via a vein in your arm through an IV. You may feel a pinch from the needle. The contrast can cause a metallic taste in your mouth and may sting for a few seconds. For the scan, your radiologist will position you on a table, which is then moved into the scanner machine. The scanner will use X-ray beams to take images of your sinuses. The scan takes about 30 seconds, and you will need to be as still as possible to avoid blurry images.
After the Scan
Once the scan is complete, you can resume your normal activities right away. You should not have any side effects from the scan. The physician who ordered the test will contact you with the results when they are available.