title: Volumetric tissue reduction in radiofrequency surgery of the tongue base.
abstract: OBJECTIVE
  Radiofrequency surgery is a minimally invasive technique for the treatment of the tongue base in sleep-disordered breathing. The aim of this study was to evaluate the changes in upper airway anatomy induced by radiofrequency surgery with MRI.
  
  
  METHODS
  10 patients with sleep-disordered breathing were treated with radiofrequency surgery at tongue base. MRI measurements were performed before and after surgery with the help of a recently published protocol.
  
  
  RESULTS
  The mean total number of energy delivered per patient was 4750 +/- 1641 Joule. Relevant changes could be observed neither for tongue volume or dimension nor for retrolingual space.
  
  
  CONCLUSIONS
  Changes in upper airway anatomy could not be demonstrated. The effects of radiofrequency surgery of the tongue base may more likely be a result of changes in upper airway collapsibility.
  
  
  CONCLUSIONS
  Functional effects of surgical interventions in sleep-disordered breathing should be considered in addition to mechanistic concepts alone.
authors.affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, University Hospital Mannheim, Germany. boris.stuck@hno.ma.uni-heidelberg.de
authors.forename: Boris A
authors.initials: BA
authors.lastname: Stuck
authors.forename: Julian
authors.initials: J
authors.lastname: Köpke
authors.forename: Karl
authors.initials: K
authors.lastname: Hörmann
authors.forename: Thomas
authors.initials: T
authors.lastname: Verse
authors.forename: Andreas
authors.initials: A
authors.lastname: Eckert
authors.forename: Gregor
authors.initials: G
authors.lastname: Bran
authors.forename: Christoph
authors.initials: C
authors.lastname: Düber
authors.forename: Joachim T
authors.initials: JT
authors.lastname: Maurer
mesh_terms: D000328:Adult; D000368:Aged; D002985:Clinical Protocols; D004598:Electrosurgery; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012891:Sleep Apnea Syndromes / Q000601:surgery*; D014059:Tongue / Q000033:anatomy & histology* / Q000601:surgery*