What Does a Sinus CT Scan Show, and When Might an ENT Recommend One?

What Is a Sinus CT Scan?

A CT scan, or Computed Tomography scan, is a sophisticated diagnostic tool and imaging technique that uses X-ray technology to create detailed cross-sectional images of targeted parts of the body, which can include the sinuses.

This diagnostic tool can provide more than just a flat image of the sinuses. Instead, it can provide a comprehensive and detailed image of the complex structures of the sinuses, allowing healthcare providers to see the insides of the structures. It provides precise details and helps healthcare providers assess a wide variety of sinus conditions and diseases.

What is the test like?

During a sinus CT scan, the patient is asked to lie on a padded table, which then slowly moves through a large donut-like machine. As the patient passes through the machine, the X-ray tube rotates around the head, capturing hundreds of images. These images are then combined to create a 3D image of the sinuses, which can provide a clear and precise image of the complex sinus structures.

The non-invasive process takes about 10 to 15 minutes.

How CT Scans Can Work for the Sinuses

The sinuses are complex and complicated structures, with several layers of tissues and bones that make up the area.

A sinus CT scan can work for the sinuses because it provides a clear and precise image of these structures. It can provide care providers with clear pictures of the sinuses from any angle, revealing issues that may be unnoticeable during physical exams or traditional X-rays.

What Can a Sinus CT Scan Show and Tell Us?

A sinus CT scan may help show:

Chronic sinus inflammation

Chronic sinus inflammation, potentially due to allergies or infections, may be linked to mucus buildup.

A sinus CT scan can show and reveal mucus thickening and buildup, which can appear as gray or white areas in the scan results. CT imaging may show mucosal thickening, retained secretions, or partial or complete sinus opacification.

Sinusitis

Sinusitis is the irritation, swelling, and inflammation of the tissues and membranes in the sinus linings. The sinuses are hollow, air-filled spaces behind the nose, cheeks, and forehead. When they become irritated and swollen, mucus can build up and get trapped, leading to nasal congestion and sinus pressure.

A sinus CT scan can help care providers assess these blockages that may be associated with sinus inflammation and infections and inform diagnosis, while also taking into account symptom severity and medical history.

Nasal polyps and other soft-tissue blockages

Nasal polyps are soft, painless, benign (noncancerous) growths that can develop in the lining of the nose and sinuses. These growths can block airways and prevent sinus flow and drainage. In some patients, this may increase the risk of chronic or recurrent sinus infections. Results from a sinus CT scan can show these growths and help healthcare providers determine if they may be a contributing factor to persistent sinus issues.

Enlarged turbinates

The turbinates are small and bony structures along the sidewalls of the nose. Sometimes, they can become irritated and inflamed, which can block the airways and prevent sinus flow and drainage. This condition is called turbinate hypertrophy. A sinus CT scan can show any enlargement and inform physician recommendations on treatment and management.

Deviated septum

A deviated septum is an anatomical variation in which the nasal septum, the thin wall of bone and cartilage that separates the nose into left and right nostrils, is off-center and misaligned. In some patients, a deviated septum may contribute to nasal obstruction and may affect sinus drainage.

Ostiomeatal complex obstruction

The ostiomeatal complex (OMC) is a canal that connects the frontal sinus, anterior ethmoid air cells, and the maxillary sinus to the middle meatus. It helps with mucociliary drainage and airflow.

Chronic rhinosinusitis can lead to ostiomeatal complex obstruction, which can block drainage paths.

Dental-related sinus concerns

Sometimes, dental-related concerns and diseases involving the upper teeth can cause swollen maxillary sinuses, which impacts nasal airflow and sinus drainage. A sinus CT scan can help provide a detailed image of these areas and inform diagnosis and appropriate treatment planning.

Other less common but more serious conditions

Although rare, a sinus CT scan can show more serious conditions that may need immediate medical attention. This may include growths, masses, or tumors that may be contributing to chronic or persistent sinus issues.

When Can Your Provider Recommend a Sinus CT Scan?

An ENT may consider a CT scan when symptoms and clinical findings suggest chronic or recurrent sinus diseases, when the diagnosis is uncertain, when complications are suspected, or when detailed anatomy is needed to inform diagnosis and treatment planning. A sinus CT scan may be considered for the following symptoms:

• Recurring sinus infections
• Chronic or persistent nasal congestion that does not respond to standard treatments
• Severe facial and sinus pressure
• Intense headaches
• Persistent bloody nasal discharge

Seek prompt medical help for severe or “red flag” symptoms:

• High fever
• Facial swelling
• Neck stiffness
• Vision changes
• Confusion

Conclusion: Understanding Sinus CT Scans and When You Might Need One

Accent Sinus Center provides ear, nose, and throat care services in Galloway Township and the nearby New Jersey communities.

If you are experiencing persistent sinus issues that don’t seem to respond to medications and other forms of standard treatments, contact our team to learn more about potential contributing factors, as well as to determine whether you might need a sinus CT scan.