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Doppler ultrasonographic characteristics of superficial and deep-flow signals in the knee joint pannus of patients with rheumatoid arthritis
  1. Reiji Kasukawa1,
  2. Kiori Shio1,
  3. Yukiko Kanno1,
  4. Ai Sato1,
  5. Atsushi Takahashi1,
  6. Yukio Yamadera2,
  7. Takashi Kanno1
  1. 1Division of Rheumatology, Ohta Nishinouchi Hospital, Koriyama, Japan
  2. 2Physiological Examination Unit, Ohta Nishinouchi Hospital, Koriyama, Japan
  1. Correspondence to:
    Dr R Kasukawa
    1-8 Kamikoya, Nodamachi, Fukushima 960-8055, Japan; kasu-rei-2-18{at}

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Increased blood flow signals on power Doppler ultrasonography in the proliferated synovium (pannus) of patients with rheumatoid arthritis (RA) have been used to evaluate articular inflammation.1–7 Fiocco et al5 reported that, in patients with RA after 3 months of etanercept treatment, superficial layer vascularity of the knee joint pannus8 was significantly reduced, and this occurred before deep-layer vascularity was affected. In all, 97 knee joints of 52 patients with RA were scanned longitudinally and transversely at suprapatellar recess; we …

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