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A sinus X-ray is a series of pictures of nasal sinus cavities.
X-rays are a form of radiation, like light or radio waves, that can
be focused into a beam, much like a flashlight beam. But unlike a beam of light, X-rays can pass through most objects, including the human body. When
X-rays strike a piece of photographic film, they produce a picture.
To evaluate symptoms of possible sinusitis, X-rays of the sinuses
may be taken from several directions.
An X-ray of the sinuses may sometimes be used to confirm a
suspected diagnosis of acute
An X-ray of the sinuses was formerly the standard method of
diagnosing acute sinusitis in the sinuses behind the cheeks (maxillary sinuses)
or behind the eyebrows (frontal sinuses). Because a
computed tomography (CT) scan shows a much clearer
picture of the sinuses and other structures, the use of standard X-rays has
But standard X-rays are commonly used to help distinguish
uncomplicated sinusitis from other problems that may cause similar symptoms,
such as problems with the jaw joint, dental infections, or headache. The
findings are often not reliable, though, so they should be evaluated with
complications of sinusitis such as a bone infection develop or if it becomes
necessary to see more of the sinuses or bones that surround them, a CT scan may
Findings of an X-ray of the sinuses may include the
Normal findings on an X-ray of the sinuses will show:
Standard X-rays are fairly good at showing the frontal and
maxillary sinuses (those in the cheek and forehead). They do not show the
ethmoid and sphenoid sinuses as well.
Abnormal findings on an X-ray of the sinuses may show evidence of
fluid in the sinus or a thickened mucous membrane. This is strong evidence of a
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ByHealthwise StaffPrimary Medical ReviewerPatrice Burgess, MD - Family MedicineSpecialist Medical ReviewerMartin J. Gabica, MD - Family Medicine
Current as ofMay 4, 2017
Current as of:
May 4, 2017
Patrice Burgess, MD - Family Medicine
& Martin J. Gabica, MD - Family Medicine
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