文档介绍：Chapter 6 Ultrasonography and therapy monitoring 201 US permits accurate and reliable assessment of soft tissue involvement in rheumatic disease [1-3]. High- resolution US with power Doppler equipment can detect even minimal morphostructural and perfu- sional changes within soft tissues [4-14], and may offer additional information for disease activity monitoring [15-24] (Figs. -). Some preliminary investigations suggest that power Doppler US could be essfully incorpo- rated into drug therapy monitoring in patients with Rheumatoid arthritis. aBaseline US examination with a longitudinal dorsal scan of the wrist joint. An intra-articular injection of triamcinolone acetonide (30 mg) was performed under US guidance. bTwo weeks after the injection, follow-up US examina- tion detected a dramatic decrease in both joint cavity widening and intra-articular power Doppler signals. c= capitate bone; lu= lunate bone; r= radius Fig. a, b ab Rheumatoid arthritis. Baseline US examination on transverse ( a ) and longitudinal ( b) anterior scans of the shoulder showing active tenosynovitis of the long head of biceps tendon ( t). An injection of triamcinolone acetonide (30 mg) was performed under US guidance within the tendon sheath. c , dTwo weeks after the injection, follow-up US examination detected a marked reduc- tion of power Doppler signal. h= bicipital groove Fig. a-d abcd 20