A skull x-ray is a picture of the bones surrounding the brain, including the facial bones, the nose, and the sinuses.
You lie on the x-ray table or sit in a chair. Your head may be placed in different positions.
Tell the health care provider if you are pregnant or think you are pregnant. Remove all jewelry.
There is little or no discomfort during an x-ray. If there is a head injury, positioning the head may be uncomfortable.
Your doctor may order this x-ray if you have injured your skull. You may also have this x-ray if you have symptoms or signs of a structural problem inside the skull, such as a tumor or bleeding.
A skull x-ray is also used to evaluate an unusually shaped child's head.
Other conditions for which the test may be performed include:
Sometimes skull x-rays are used to screen for foreign bodies that may interfere with other tests, such as an MRI scan.
A CT scan of the head is usually preferred to a skull x-ray to evaluate most head injuries or brain disorders. Skull x-rays are rarely used as the main test to diagnose such conditions.
Abnormal results may be due to:
A skull x-ray may detect increased intracranial pressure and unusual skull structures that are present at birth (congenital).
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 is low compared with the benefits. Pregnant women and children are more sensitive to the risks associated with x-rays.
Reviewed By: Amit M. Shelat, DO, FACP, Attending Neurologist and Assistant Professor of Clinical Neurology, SUNY Stony Brook, School of Medicine, Stony Brook, NY. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.