High-resolution magnetic resonance imaging of rotator cuff tears using a microscopy coil: Noninvasive detection without intraarticular contrast material

Shin Hitachi, Kei Takase, Minoru Tanaka, Yuichi Tojo, Shiro Tabata, Kazuhiro Majima, Shuichi Higano, Shoki Takahashi

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Purpose: The aim of this study was to evaluate the feasibility of high-resolution magnetic resonance imaging (MRI) using a microscopy coil for the diagnosis of rotator cuff tears by comparing the method to conventional MRI and MRI arthrography. Materials and methods: A total of 68 shoulders were prospectively studied using a 1.5-T MRI unit. Conventional MRI scans were obtained with a surface coil and high-resolution MRI scans with a microscopy coil. MRI arthrography was performed in 28 shoulders using a surface coil. MRI evaluation of tears of rotator cuff tendons was compared with arthroscopic findings and surgical results. Results: The surgery revealed 40 full-thickness tears, 13 partial-thickness tears, and 15 intact cuffs. In all, 35 (88%) full-thickness tears were correctly diagnosed on conventional MRI and 40 (100%) on high-resolution MRI. MR arthrography delineated 11 of 12 (92%) full-thickness tears. Altogether, 5 (38%) of the partial-thickness tears were detected on conventional MRI, and 12 (92%) were clearly demonstrated on high-resolution MRI. MRI arthrography depicted three (60%) of five partial-thickness tears. High-resolution MRI showed higher sensitivity than conventional MRI (P < 0.05) and had values equivalent to those of MRI arthrography for diagnosing partial-thickness tears. Conclusion: High-resolution MRI with a microscopy coil is a feasible, noninvasive technique for diagnosing rotator cuff tears.

Original languageEnglish
Pages (from-to)466-474
Number of pages9
JournalJapanese Journal of Radiology
Volume29
Issue number7
DOIs
Publication statusPublished - 2011 Aug

Keywords

  • MRI
  • Microscopy coil
  • Rotator cuff tear
  • Shoulder

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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