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Table 5 Comparison of scoring of synovitis with ultrasonography and MRI with their respective volume-based scales

From: Ultrasonography of the metacarpophalangeal and proximal interphalangeal joints in rheumatoid arthritis: a comparison with magnetic resonance imaging, conventional radiography and clinical examination

   MRI grades
   0 1 2 3 4
US grades 0 75 128 20 2 0
  1 13 8 19 1 1
  2 14 20 12 16 2
  3 9 12 13 31 21
  4 0 4 0 4 8
  1. Values in the cells describe the numbers of joints, apart from those denoting score (first column for US and first row for MRI). Numbers in bold denote exact agreements between respective identical scores. MRI, magnetic resonance imaging; US, ultrasonography.