6Wakefield RJ,Gibbon W W,Conaghan PG,et al.The value of sonography in the detection of bone erosions in patients with rheumatoid arthritis:a comparison with conventional radiography.Arthritis Rheum,2000,43:2762-2770.
7Walther M,Harms H,Krenn V,et al.Correlation of power doppler sonography with vasculatity of synovial tissue of knee joint in patients with osteoarthritis and rheumatoid arthritis.Arthritis Rheum,2001,44:331-338.
8D'Agostino MA,Le Bars M,Schemidlely N,et al.Interest of ultrasonography to detect synovitis in painful knee osteoarthritis in daily practice.Arthritis Rheum,2003,48:80-88.
9Scheel AK,Hermann KG,Ohmdorf S,et al.Prospective 7 year follow up imaging study comparing radiography,ultrasonography,and magnetic resonance imaging in rheumatoid arthritis finger joints.Ann Rheum Dis,2006,65:595-600.
10Walther M,Harms H,Krenn V,et al.Synovial tissue of the hip at power doppler US:correlation between vascularity and power doppler US signal.Radiology,2002,225:225-231.