The standard X‑ray views for paranasal sinuses (PNS) include the Waters (occipitomental) view as the primary projection to visualize maxillary sinuses and orbital floors. Additional views commonly obtained are the Caldwell (PA) for frontal and ethmoid sinuses and the lateral view for sphenoid and overall sinus assessment. Submentovertex or modified Waters views may be added if needed.

AP view stands for anteroposterior projection: the X‑ray beam travels from the front (anterior) to the back (posterior) of the body onto the detector. It’s commonly used for portable or supine patients who cannot stand. Compared with a PA view, AP can produce magnified cardiac and mediastinal silhouettes and altered lung markings, so interpretation accounts for these projection-related changes.

Paranasal sinus (PNS) X‑ray is typically performed as a three‑view series: Waters (occipitomental), Caldwell (occipitofrontal) and lateral. These projections assess the maxillary, frontal, ethmoid and sphenoid sinuses for fluid levels, mucosal thickening or bony changes. Additional views (e.g., submentovertical/SMV) may be requested in specific cases. Radiologists choose views based on clinical history and suspected pathology.

Cost of a paranasal sinus (PNS) X‑ray varies by country and facility: in India about ₹200–₹1,000; in the US roughly $50–$300 out‑of‑pocket (higher in hospitals; lower at imaging centers; insurance may lower cost); in the UK it's free on the NHS but private scans typically cost £30–£150. Prices depend on location, facility type and insurance coverage.

PNS on an X‑ray stands for paranasal sinuses. A PNS radiograph images the air‑filled sinuses around the nose (maxillary, frontal, ethmoid, sphenoid) to detect sinusitis, fluid levels, mucosal thickening, polyps, or facial fractures. Specific projections (Waters, Caldwell) optimize visualization. It’s a simple, rapid diagnostic tool often used when clinical suspicion exists or CT is not immediately required.

The PNS view refers to the Waters (occipitomental) radiographic projection. It images the paranasal sinuses—especially the maxillary and frontal sinuses—by angling the patient's head so the occiput contacts the cassette and the central X‑ray beam exits at the acanthion. It’s commonly used to detect sinusitis, fractures, and fluid levels in the sinuses.