title: Patients with head and neck cancer not aided by scans.
mesh_terms: D001842:Bone and Bones / Q000000981:diagnostic imaging*; D005069:Evaluation Studies as Topic; D006258:Head and Neck Neoplasms; D006801:Humans; D008099:Liver / Q000000981:diagnostic imaging*; D009362:Neoplasm Metastasis; D011877:Radionuclide Imaging