CT PNS is the imaging modality of the para nasal sinuses. Then, the table will move slowly through the machine as the actual CT scanning is performed. CT scans typically obtained for visualizing the paranasal sinus should include coronal and axial (3-mm) cross sections. PNS is the full form of Para Nasal Sinuses. CT scan paranasal sinus is the full form of CT PNS scan. Computerized Tomography (CT) scan of the Paranasal Sinuses (PNS) is a diagnostic procedure where rotating beams of X-rays are used to create cross sectional.