title: MR evaluation of PDMS injections in head and neck tissues: a pilot study.
abstract: OBJECTIVE
  To describe the magnetic resonance (MR) appearance of polydimethylsiloxane (PDMS) injections in the head and neck region.
  
  
  METHODS
  Retrospective review of MR images from a case series.
  
  
  METHODS
  MR images of 10 patients, who underwent PDMS injections at our department, were reviewed. Data from imaging were collected and analyzed.
  
  
  RESULTS
  After injection, PDMS can be identified in MR images, particularly in T2-weighted images in the early stages. Its MR characteristics are similar to silicone in other regions, but with time, its appearance can change.
  
  
  CONCLUSIONS
  The integration of PDMS with tissues may also be reflected in changes in MR appearance, as a result of an increased amount of fibrous tissue in the region injected. Radiologists and ENT specialists may benefit from knowledge of the MR characteristics and variability in appearance of PDMS in human tissues for improving image interpretation.
authors.affiliation: Otolaryngology-Head and Neck Surgery Department, University Hospital of Modena, Via del Pozzo 71, 41100 Modena, Italy.
authors.forename: Matteo
authors.initials: M
authors.lastname: Alicandri-Ciufelli
authors.forename: Guido
authors.initials: G
authors.lastname: Ligabue
authors.forename: Alberto
authors.initials: A
authors.lastname: Grammatica
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Bergamini
authors.forename: Daniele
authors.initials: D
authors.lastname: Marchioni
authors.forename: Angelo
authors.initials: A
authors.lastname: Ghidini
authors.forename: Elisabetta
authors.initials: E
authors.lastname: Genovese
authors.forename: Livio
authors.initials: L
authors.lastname: Presutti
mesh_terms: D000328:Adult; D000368:Aged; D004129:Dimethylpolysiloxanes / Q000008:administration & dosage*; D005064:Eustachian Tube / Q000002:abnormalities; D005260:Female; D006801:Humans; D007267:Injections; D007818:Laryngeal Diseases / Q000628:therapy*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009668:Nose Diseases / Q000628:therapy; D010865:Pilot Projects; D012189:Retrospective Studies; D016896:Treatment Outcome; D014826:Vocal Cord Paralysis
chemical_list: D004129:Dimethylpolysiloxanes