The nasal cavity is surrounded by the bones of the face. These bones consist of hollow and air-filled spaces to which we call paranasal sinuses cavities. A sinus infection in which we suffer from a feeling of pressure in the face, inflamed nasal passages, fever, coughing, a thick mucous buildup, nasal congestion and bad breath is termed as paranasal sinuses disease. If we want to evaluate paranasal cavities then, then the test performed by using X-ray equipment is CT-scan paranasal sinuses. This method of diagnosis is considered to be non-invasive.