Mastoid Air Cell Count (by Imaging)

What This Test Measures

The test uses X-ray imaging to visualize the mastoid air cells, which are small air pockets in the mastoid portion of your temporal bone. These cells help drain middle ear fluid and reduce pressure. The count assesses whether these spaces are fully aerated or if fluid, inflammation, or other abnormalities are present.

Why It’s Done

Your healthcare provider might recommend this test if you have symptoms like recurrent ear infections, hearing loss, dizziness, or pain in the ear region. It’s also used to evaluate conditions like otitis media (middle ear infection), cholesteatoma (a benign growth), or congenital anomalies of the ear.

Preparation

No special preparation is needed for this test. You’ll typically lie down while the technician positions your head for the X-ray. If you have metal objects (like jewelry or piercings) near the ear, let your provider know to avoid interference.

What to Expect During the Test

The procedure is quick and painless. You’ll feel a slight pressure or warmth as the X-ray beam passes through your head, but you won’t experience discomfort. The images are captured in seconds, and you can resume normal activities immediately afterward.