Table 2

 Ultrasound findings of the material in 44 patients

PDU, power Doppler ultrasound; PDU+, positive power Doppler signal found in the synovium; US, ultrasound.
Grey-scale US
    Effusion35/44 (80%)
    Synovial proliferation39/44 (89%)
    Effusion or synovial proliferation or both42/44 (95%)
Grey-scale pathology or PDU+ or both43/44 (98%)
PDU+34/44 (77%)
PDU+ in histological inflammation29/35 (83%)
PDU+ in any histological reaction34/43 (79%)
PDU+ in other pathological synovial reactions than inflammation5/8 (62.5%)