Artifactual 2-deoxy-2-[(18)F]fluoro-D-glucose localization surrounding metallic objects in a PET/CT scanner using CT-based attenuation correction.

Purpose: To communicate a clinically important artifact in positron emission tomography (PET) images using a PET/computerized tomography (CT) scanner with CT-based attenuation correction.

Procedure: A 65-year-old man with a maxillary sinus squamous cell carcinoma was injected with 2-deoxy-2-[(18)F]fluoro-D-glucose (FDG) and underwent a PET scan using a dual modality PET/CT scanner with CT-based attenuation correction. Immediately afterward, the patient had a second scan using a different PET scanner that used a high-energy transmission source for attenuation correction.