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Power Doppler Sonography and Pulse-Inversion Harmonic Imaging in Evaluation of Rheumatoid Arthritis Synovitis

Claudia Schueller-Weidekamm1, Christian Krestan1, Gerd Schueller1, Theresa Kapral2, Daniel Aletaha2 and Franz Kainberger1

1 Department of Diagnostic Radiology, Medical University of Vienna, Waehringer Guertel 18-20, A-1090 Vienna, Austria.
2 Department of Rheumatology, Internal Medicine III, Medical University of Vienna, Vienna, Austria.


Figure 1
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  		Fig. 1A —54-year-old woman with 3-year history of rheumatoid arthritis showing hypervascularization of synovial tissue. Power Doppler sonogram of proximal interphalangeal joint III (standard transverse cut) shows hypervascularization of synovial tissue (arrows) before therapy. Stars indicate digital artery.

 

Figure 2
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  		Fig. 1B —54-year-old woman with 3-year history of rheumatoid arthritis showing hypervascularization of synovial tissue. Note reduction in hypervascularization of synovial tissue after therapy. Stars indicate digital artery.

 

Figure 3
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  		Fig. 2 —Quantitative estimation of intraarticular vascularization is shown as time-intensity curve obtained after administration of contrast material. Calculation of area under curve before and after therapy was performed. Echo intensity is significantly diminished (p < 0.05) after therapy, indicating reduction in intraarticular vascularization. Gray area indicates before therapy; white area indicates after therapy.

 

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