PET imaging provides a slight improvement over CT in diagnosing head and neck cancers, according to research presented at the American Head and Neck Society's 7th International Conference on Head and Neck Cancer. A study had patients with head and neck squamous cell carcinoma undergo PET, CT or combined PET-CT scanning, resulting in 95% specificity from PET. "PET scan was a little better in picking up some things, and CT scans pick up more false positives," study presenter Surjeet Pohar said.

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