A CT scan of the paranasal sinuses without contrast is a non-invasive diagnostic method used to visualize anatomical structures and detect pathological changes in the sinuses. This type of imaging provides detailed views of both bone structures and soft tissues without the need for contrast agents, making it a safer option for patients with allergies or kidney issues.
 
Procedure Overview: During the CT scan of the paranasal sinuses without contrast, the patient is placed inside a CT scanner, where a rotating X-ray tube and detectors capture multiple images from different angles. A computer processes this data, creating cross-sectional slices that can be combined into a 3D image.
This scan is crucial for diagnosing various conditions of the paranasal sinuses, such as sinusitis, polyps, cysts, tumors, and injuries. It helps identify structural abnormalities, assess the extent of damage, and guide the most effective treatment strategy.
 
Clinical Applications: CT scanning of the paranasal sinuses without contrast is a valuable diagnostic tool for evaluating sinus health. It helps detect conditions like sinusitis, polyps, structural anomalies, and tumors.
 
Indications for a CT Scan of Paranasal Sinuses without Contrast:
Suspected Acute or Chronic Sinusitis: To determine the location and cause of inflammation and assess the extent of sinus involvement.
Post-Traumatic Evaluation: To detect fractures of the facial bones and assess their impact on the sinuses.
Suspected Tumors: To identify tumors or cysts in the sinuses and evaluate their spread.
Surgical Planning: Performed before sinus surgery to plan the approach and assess potential risks.
Treatment Monitoring: To evaluate the effectiveness of treatment for sinus infections or tumors.
 
Preparation: No special preparation is required for this scan. However, patients should:
Remove jewelry, glasses, and any metallic objects that might interfere with the imaging.
Inform the doctor of any medications being taken, as some may affect image quality.
Notify the doctor if pregnant or suspecting pregnancy, as the procedure may pose risks to the fetus.