title: Usefulness of multislice-CT using multiplanar reconstruction in the preoperative assessment of the ossicular lesions in the middle ear diseases.
abstract: OBJECTIVE
  The aim of the study is to evaluate the usefulness of multislice computed tomography (MSCT) using multiplanar reconstruction (MPR) in obtaining preoperative information on the ossicular lesions of middle ear diseases by comparing the ossicular findings of MPR images with the operative findings.
  
  
  METHODS
  Sixty-two ears and 10 ears with preoperative middle ear diseases underwent 4- and 64-detector row CT of the temporal bone in Kagawa University Hospital, respectively. MPR images of three ossicles were created at the planes parallel to the long axis of ossicles.
  
  
  RESULTS
  The findings of the three ossicles in MPR images were compatible with their operative findings in approximately 91% of 72 ears with various middle ear diseases. There was no significant difference in the coincidence rate of both findings between 4- and 64-detector row CT scanners. The ears with no soft tissue shadows around the ossicles had the coincidence rate of 96-100% in each ossicular part, whereas the coincidence rate was lower in the ears with soft tissue shadows around the ossicles.
  
  
  CONCLUSIONS
  MPR imagings of the ossicles provide accurate preoperative information on the ossicular lesions in middle ear diseases. The 4-detector CT is still a useful device for imaging of the ossicles.
authors.affiliation: Department of Otolaryngology, Faculty of Medicine, Kagawa University, Kagawa, Japan. Electronic address: spring@kms.ac.jp.
authors.forename: Seiko
authors.initials: S
authors.lastname: Fujiwara
authors.affiliation: Department of Radiology, Takamatsu Redcross Hospital, Kagawa, Japan.
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Toyama
authors.affiliation: Department of Otolaryngology, Faculty of Medicine, Kagawa University, Kagawa, Japan.
authors.forename: Takenori
authors.initials: T
authors.lastname: Miyashita
authors.affiliation: Department of Otolaryngology, Osaka Medical Center And Research Institute For Maternal and Child Health, Osaka, Japan.
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Osaki
authors.affiliation: Department of Otolaryngology, Faculty of Medicine, Kagawa University, Kagawa, Japan.
authors.forename: Ryuhei
authors.initials: R
authors.lastname: Inamoto
authors.affiliation: Department of Otolaryngology, Faculty of Medicine, Kagawa University, Kagawa, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Hoshikawa
authors.affiliation: Department of Otolaryngology, Faculty of Medicine, Kagawa University, Kagawa, Japan; Osaka Bay Central Hospital, Osaka, Japan.
authors.forename: Nozomu
authors.initials: N
authors.lastname: Mori
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D018424:Cholesteatoma, Middle Ear / Q000000981:diagnostic imaging* / Q000601:surgery; D002908:Chronic Disease; D004429:Ear Ossicles / Q000000981:diagnostic imaging* / Q000601:surgery; D004432:Ear, Middle / Q000000981:diagnostic imaging* / Q000601:surgery; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D061330:Multidetector Computed Tomography; D010033:Otitis Media / Q000000981:diagnostic imaging* / Q000601:surgery; D011300:Preoperative Care; D055815:Young Adult
keywords: Auditory ossicular lesion; Middle ear diseases; Multiplanar reconstruction image; Multiscan CT; Surgical findings