title: Unidentified Bright Objects on Brain Magnetic Resonance Imaging Affect Vestibular Neuritis.
abstract: OBJECTIVE
  The aim of this study was to investigate the differences in clinical manifestations of in two groups of vestibular neuritis (VN) patients with or without unidentified bright objects (UBOs).
  
  
  METHODS
  A prospective, observational study with 46 patients diagnosed with VN between May 2013 and November 2013 was executed. A caloric test, a cervical vestibular-evoked myogenic potentials (cVEMPs) test, brain magnetic resonance imaging (MRI), spontaneous nystagmus test, head impulse test, and head-shaking nystagmus test were performed.
  
  
  RESULTS
  Of the patients, 56.5% (n=26) were classified as UBO-positive by MRI. These showed lower caloric weakness and more prominent cVEMP asymmetry compared with the UBO-negative group (P<0.05). Total VN (TVN) was the most common in the UBO-positive group (45.0%), followed by superior VN (SVN, 30.0%), and inferior VN (IVN, 25.0%). However, in the UBO-negative group, SVN (75.0%) was the most common, followed by TVN and IVN (P<0.05). The recovery rate was not influenced by UBOs (P>0.05).
  
  
  CONCLUSIONS
  UBOs on T2-weighted or fluid attenuated inversion recovery MRI may affect the patterns of the vestibular nerve in patients with VN.
authors.affiliation: Department of Otorhinolaryngology, Eulji University Hospital, Eulji University School of Medicine, Daejeon, Korea.
authors.forename: Ho Yun
authors.initials: HY
authors.lastname: Lee
authors.affiliation: Department of Otorhinolaryngology, Eulji University Hospital, Eulji University School of Medicine, Daejeon, Korea.
authors.forename: Ji Chan
authors.initials: JC
authors.lastname: Kim
authors.affiliation: Department of Otorhinolaryngology, Eulji University Hospital, Eulji University School of Medicine, Daejeon, Korea.
authors.forename: Dong Sik
authors.initials: DS
authors.lastname: Chang
authors.affiliation: Department of Otorhinolaryngology, Eulji University Hospital, Eulji University School of Medicine, Daejeon, Korea.
authors.forename: Chin Saeng
authors.initials: CS
authors.lastname: Cho
keywords: Magnetic Resonance Imaging; Prognosis; Vestibular Neuronitis