Reliability and agreement of proton density-weighted vs. gadolinium-enhanced T1-weighted MRI in hand osteoarthritis. An OMERACT MRI special interest group reliability exercise

Semin Arthritis Rheum. 2021 Aug;51(4):929-932. doi: 10.1016/j.semarthrit.2021.05.007. Epub 2021 May 21.

Abstract

Objectives: To compare reliabilities of assessing synovitis in hand osteoarthritis (OA) using Magnetic Resonance Imaging (MRI) with/without gadolinium (Gd).

Methods: Three readers scored synovitis on non-enhanced two-dimensional (2D) proton density (PD)-weighted MRI and Gd-enhanced (3D) MRI of hand joints in 20 patients. Inter-reader reliabilities were examined.

Results: Reliability was good for Gd-enhanced MRI, but poor for non-enhanced PD-weighted MRI (intraclass correlation coefficient 0.83 and 0.21, respectively). Agreement between the two sequences was poor (weighted kappa 0.18).

Conclusion: Gd-enhanced MRI was more reliable than PD-weighted MRI for assessing synovitis. Gd-enhancement, but also resolution and tissue contrast, might have contributed to this.

Keywords: Hand; MRI; OMERACT; Osteoarthritis; Synovitis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Contrast Media
  • Gadolinium
  • Humans
  • Magnetic Resonance Imaging
  • Osteoarthritis* / diagnostic imaging
  • Protons
  • Public Opinion
  • Reproducibility of Results
  • Synovitis* / diagnostic imaging

Substances

  • Contrast Media
  • Protons
  • Gadolinium