title: Diagnostic imaging modalities in head and neck disease.
abstract: BACKGROUND
  Because of the complex anatomy of the head and neck region, conventional projection radiography alone is unreliable and carries a high risk of misdiagnosis. The poor risk-benefit ratio of conventional radiography has led to their replacement by tomographic imaging for nearly all studies in this region.
  
  
  METHODS
  This review is based on pertinent articles retrieved by a selective search in the PubMed database (January 1980 to May 2013) as well as on the relevant guidelines from Germany and abroad.
  
  
  RESULTS
  The indication for diagnostic imaging in the anatomically complex head and neck region should be established for a specific type of imaging study on the basis of a thorough clinical examination. Conventional films, though easy to obtain, often cannot answer the diagnostic question and may yield confusing information leading to misdiagnosis. Computed tomography (CT) has the best risk-benefit profile and a high diagnostic value, but low-dose protocols have not yet been put into use in all centers. Magnetic resonance imaging (MRI) is best for bone and soft-tissue diagnosis, but consumes more resources. Digital volume tomography (DVT) is another type of three-dimensional, sectional imaging with high local resolution; the associated radiation exposure and image quality are generally both low, but may vary depending on the apparatus used. DVT cannot be used to evaluate the soft tissues. Ultrasonography can be used to evaluate superficial structures in the head and neck region; nuclear imaging can be used to evaluate thyroid disease and cancer.
  
  
  CONCLUSIONS
  Inflammatory, traumatic, and neoplastic diseases of the head and neck are best evaluated with cross-sectional imaging (CT, MRI) in accordance with current guidelines. Conventional x-rays should, in general, only be used for dental evaluation, with rare exceptions.
authors: Institute of Radiology and Nuclear Medicine, Alb Fils Kliniken, Klinik am Eichert, Göppingen, Department of Otolaryngology (ENT)/ Head & Neck Surgery, Bonn University Hospital, Institute of Clinical Radiology, Städtische Kliniken Neuss-Lukaskrankenhaus-GmbH, Neuss, Department of Craniomaxillofacial Surgery-Plastic Surgery-Universität Witten/Herdecke, Klinikum Dortmund gGmbH, Klinikzentrum Nord, Department of Neurosurgery, University Hospital Tübingen, Department of Diagnostic Radiology, Martin Luther University Halle-Wittenberg.
authors: Florian
authors: F
authors: Dammann
authors: Friedrich
authors: F
authors: Bootz
authors: Mathias
authors: M
authors: Cohnen
authors: Stefan
authors: S
authors: Hassfeld
authors: Marcos
authors: M
authors: Tatagiba
authors: Sabrina
authors: S
authors: Kösling
mesh_terms: D006259:Craniocerebral Trauma / Q000175:diagnosis*; D003952:Diagnostic Imaging / Q000379:methods*; D006257:Head / Q000000981:diagnostic imaging / Q000473:pathology; D006258:Head and Neck Neoplasms / Q000175:diagnosis*; D006801:Humans; D007249:Inflammation / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009333:Neck / Q000000981:diagnostic imaging / Q000473:pathology; D019838:Neck Injuries / Q000175:diagnosis*; D014057:Tomography, X-Ray Computed / Q000379:methods*