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Table 3 Pathological findings detected by MRI and US in areas examined 1 in 11 clinically affected joints

From: Comparison of ultrasonography with Doppler and MRI for assessment of disease activity in juvenile idiopathic arthritis: a pilot study

   Pathological findings
Joint Areas examined Synovial hypertrophy Synovial contrast enhancement/hyperemia Effusion Erosion
   n MRI US MRI US MRI US MRI US
Ankle talo-crural 2 2 2 2 2 2 1 0 1
n = 2 talo-navicular 2 1 1 1 1 1 0 0 0
  post. subtalar 2 2 1 2 1 1 1 0 0
  tendon sheaths 2 1 0 1 0 0 0 n/a n/a
Knee anterior 3 3 2 2 2 3 2 0 0
n = 3 lateral 3 3 2 3 2 2 1 0 0
  medial 3 3 3 3 2 2 3 0 0
  Baker’s cyst 3 3 1 3 0 1 1 n/a n/a
Wrist radio-carpal 6 6 6 6 6 1 0 3 1
n = 6 midcarpal 6 6 3 6 3 0 0 2 0
  dist. radio-ulnar2 6 5 - 5 - 2 - 0 -
  tendon sheaths 6 1 1 1 0 0 1 n/a n/a
Number of pathological findings   Tot. 441 36 22 35 19 15 10 5 2
  1. 144 areas examined by MRI, 38 areas examined by US.
  2. 2Distal radio-ulnar joint examined by MRI only, not by US.
  3. n/a = non applicable.