What should you know about facial CT scan?

A CT scanner combines multiple X-ray views into detailed slices. For the face, these images can show the cheekbones, jaw, eye sockets, nasal bones, sinuses and areas of swelling or abnormal tissue. A clinician may request the scan after trauma, for persistent sinus or facial symptoms, or to define an area that needs further evaluation. A CT image is one part of assessment and does not by itself establish a cancer diagnosis.

Some facial CT examinations use an injected contrast agent. This can help separate blood vessels or soft tissues from surrounding structures. Tell the team about previous reactions, kidney disease, thyroid conditions, pregnancy or a possibility of pregnancy before the appointment.

Follow the imaging service's instructions about food, drink and medicines. Remove metal objects around the head and neck, and keep still while the scanner takes its images. The scan is usually brief, but remaining still helps prevent blurred pictures. If contrast is planned, the team may ask about allergies and kidney health and may observe you briefly afterward.

Contact a clinician for facial swelling that persists, repeated nosebleeds, ongoing facial pain, changes in vision, a new lump or symptoms that do not settle. Seek urgent help after a serious injury, or for trouble breathing, severe bleeding, sudden vision loss, confusion or weakness. Emergency symptoms require immediate assessment rather than waiting for a scheduled scan.

Ask why CT is being recommended, whether contrast will be used, how the result may change your care, when the report will be available, and whether MRI or tissue sampling could be considered.