title: Diagnostic performance of indirect MR arthrography for the diagnosis of rotator cuff tears at 3.0 T.
abstract: BACKGROUND
  Indirect magnetic resonance (MR) arthrography is a non-invasive method for shoulder imaging. However, there are no studies that have examined the diagnostic performance of indirect MR arthrography for the diagnosis of rotator cuff tears in a large patient population.
  
  
  OBJECTIVE
  To assess the diagnostic performance of indirect fast spin-echo (FSE) MR arthrography for the diagnosis of rotator cuff tears at 3.0 T.
  
  
  METHODS
  A total of 149 patients who had undergone indirect shoulder MR arthrography followed by arthroscopic surgery were enrolled in this retrospective study. Two musculoskeletal radiologists evaluated images from each patient for the presence of supraspinatus-infraspinatus (SSP-ISP) or subscapularis (SSC) tendon tears. Using the arthroscopic findings as the reference standard, the overall diagnostic performance and detection rates for SSP-ISP and SSC tendon tears were calculated.
  
  
  RESULTS
  The sensitivity, specificity, and accuracy of readers I and II for the diagnosis of SSP-ISP tendon tears were 94% and 95%, 89% and 85%, and 93% and 93%, respectively. The sensitivity of imaging for detection of SSP-ISP tendon tears by readers I and II were 100% and 100% for full-thickness tears and 84% and 86% for partial-thickness tears, respectively. The sensitivity, specificity, and accuracy of readers I and II for the diagnosis of SSC tendon tears were 80% and 76%, 89% and 93%, and 85% and 85%, respectively.
  
  
  CONCLUSIONS
  Indirect MR arthrography is useful for the detection of SSP-ISP and SSC tendon tears.
authors.affiliation: Department of Radiology, Samsung Medical Center, Sungkyunkwan University, School of Medicine, Seoul, Republic of Korea.
authors.forename: Ji Hyun
authors.initials: JH
authors.lastname: Lee
authors.affiliation: Department of Radiology, Samsung Medical Center, Sungkyunkwan University, School of Medicine, Seoul, Republic of Korea youngcheol.yoon@gmail.com.
authors.forename: Young Cheol
authors.initials: YC
authors.lastname: Yoon
authors.affiliation: Department of Radiology, Samsung Medical Center, Sungkyunkwan University, School of Medicine, Seoul, Republic of Korea.
authors.forename: Sukkyung
authors.initials: S
authors.lastname: Jee
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001175:Arthrography / Q000379:methods*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D017006:Rotator Cuff / Q000000981:diagnostic imaging*; D000070636:Rotator Cuff Injuries; D055815:Young Adult
keywords: 3.0 T; Magnetic resonance imaging (MRI); indirect arthrography; rotator cuff; shoulder