• PNS means Paranasal Sinuses.
  • Para nasal sinuses are air filled cavities around the nose that are present behind cheek bone, lower forehead,  upper nose.
  • CT PNS is performed in order to examine the diseases / deviation of nasal septum/ chronic nasal discharge/ recurrent sinusitis/ post operative cases/ trauma and  other disorders related to the PNS.
  • No preparations is required as it is a plain scan.
  • It takes only about 20–30 minutes to perform the scan.