Skull X-Ray: What It Shows, When It’s Needed, and What to Expect

At Independent Physicians Medical Center (IPMC) in Northeast Philadelphia, we offer X-ray imaging with fast results in our comfortable outpatient facility.

What Is a Skull X-Ray?

A skull X-ray uses a small, carefully controlled dose of ionizing radiation to create images of the bony structures of your head. The X-ray beam passes through the soft tissues and is absorbed differently by bone, creating a contrast image on the detector. Dense structures like bone appear white, while soft tissues appear in shades of gray.

Images are typically taken from multiple angles — front (anteroposterior or AP), side (lateral), and sometimes additional views — to give your doctor a comprehensive look at the skull from different perspectives. The entire exam takes only about 10 to 15 minutes.

Why Would Your Doctor Order a Skull X-Ray?

Your doctor may recommend a skull X-ray for:

• Head injuries — particularly minor injuries where CT may not be immediately warranted, or in settings where CT is not available. X-rays can detect linear skull fractures, though CT is far more sensitive and is preferred for moderate to severe head trauma
• Sinus evaluation — checking for fluid levels, mucosal thickening, or opacification of the sinuses (though CT is the gold standard for detailed sinus assessment)
• Foreign body detection — identifying metallic or radiopaque foreign objects in or near the head, such as bullet fragments or embedded metal
• Bone abnormalities — evaluating conditions like Paget’s disease, myeloma (“punched-out” lytic lesions), hyperparathyroidism (“salt-and-pepper” skull), or fibrous dysplasia
• Dental and jaw evaluation — assessing the mandible (jawbone) and temporomandibular joints (TMJ) in certain situations
• Pediatric evaluation — in some cases, checking for craniosynostosis (premature fusion of skull sutures) in infants
• Shunt assessment — verifying the position and integrity of ventriculoperitoneal (VP) shunt components in patients with hydrocephalus

For any significant head injury, suspected bleeding inside the skull, stroke symptoms, or suspected brain tumors, a CT scan is the appropriate test rather than a skull X-ray, as CT provides far more detailed information about the brain and soft tissues.

How to Prepare and What to Expect

No special preparation is needed. Remove eyeglasses, earrings, hearing aids, hairpins, dentures, and any other metal objects from your head and neck area. You may be asked to change into a gown.

A technologist will position your head against the X-ray plate and may take images from several angles. You’ll need to hold still for a few seconds during each exposure. The entire exam takes about 10 to 15 minutes and is painless. The radiation dose from a skull X-ray is very low.

A board-certified radiologist will review the images and send a report to your doctor, typically within 24 to 48 hours. You can resume normal activities immediately.