Sinus x-ray

Alternative Names: Paranasal sinus radiography; x-ray - sinuses

A sinus x-ray is a picture of the air-filled cavities in the front of the skull.

Why is the Test Performed?

This test is performed when you have symptoms of sinusitis or other sinus disorders.

How is the Test Performed?

X-rays are a form of electromagnetic radiation -- like light, but of higher energy. They can pass through the body to form an image on film. Structures that are dense (such as bone) look white, air looks black, and other structures are shades of gray.

A sinus x-ray is taken in a hospital radiology department or your health care provider's office. You will be asked to sit in a chair so that any fluids in the sinus may be easily seen on the pictures. The technician may place your head in different positions as the pictures are taken.

Preparation for the Test

Tell your doctor if you are pregnant. Remove all jewelry.

How will the Test Feel?

Generally, there is little or no discomfort with x-rays.

Sinus x-ray Risks

There is low radiation exposure. X-rays are monitored and regulated to provide the minimum amount of radiation exposure needed to produce the image. Most experts feel that the risk of most x-rays is smaller than other risks we take every day. Pregnant women and children are more sensitive to the risks of x-rays.

Considerations

A CT scan of the sinuses is often preferred over a sinus x-ray, because it shows more detail.

What Abnormal Results Mean

The x-ray may detect tumors, blockages, infections, and bleeding.

The test may also be performed for conditions such as:

• Acute sinusitis
• Chronic sinusitis
• Meningitis
• Orbital cellulitis

Sinuses

Review Date: 8/31/2011
Reviewed By: Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine; Seth Schwartz, MD, MPH, Otolaryngologist, Virginia Mason Medical Center, Seattle, Washington. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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