I also hope you get relief soon! Sinusitis is miserable...

Jmo, but the benefits of the Cat scan outweigh most of the cons. With worsening symptoms, it appears your physician may want to rule out underlying problems.
The majority of Cat scans done today have less risk involved re radiation...you can always check with the facility and inquire if they have the newer machines if it would reassure you.

Best wishes for feeling better,
Catherine