title: Diagnosis of adhesive capsulitis: comparison of contrast-enhanced MRI with noncontrast-enhanced MRI.
abstract: OBJECTIVE
  To compare the diagnostic performance of contrast-enhanced (CE) magnetic resonance imaging (MRI) and non-CE MRI for adhesive capsulitis (AC).
  
  
  METHODS
  CE MRI of 50 AC and 53 non-AC patients were reviewed by two radiologists independently.
  
  
  RESULTS
  Axillary capsular thickening and T2 hyperintensity (sensitivity=92-94%; specificity=53-64%) and enhancement of the axillary capsule and rotator interval (sensitivity=92-98%; specificity=38-64%) were helpful in diagnosing AC. Interobserver reliability was highest with axillary joint capsule enhancement (κ=0.92).
  
  
  CONCLUSIONS
  Non-CE and CE MRI are helpful in confirming the clinical diagnosis of AC. CE-MRI may improve assessment of the rotator interval and diagnostic confidence in patients with AC.
authors.affiliation: Department of Radiology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea.
authors.forename: Kyung-Sik
authors.initials: KS
authors.lastname: Ahn
authors.affiliation: Department of Radiology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea. Electronic address: mallecot@gmail.com.
authors.forename: Chang Ho
authors.initials: CH
authors.lastname: Kang
authors.affiliation: Department of Radiology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea.
authors.forename: Yura
authors.initials: Y
authors.lastname: Kim
authors.affiliation: Department of Orthopaedic Surgery, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea.
authors.forename: Woong-Kyo
authors.initials: WK
authors.lastname: Jeong
mesh_terms: D000328:Adult; D000368:Aged; D002062:Bursitis / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D012785:Shoulder Joint / Q000473:pathology*; D055815:Young Adult
keywords: Adhesive capsulitis; Axillary capsule; Contrast-enhanced MRI; Rotator interval