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Journal of Ultrasound in Medicine, Vol 17, Issue 2 103-107, Copyright © 1998 by American Institute of Ultrasound in Medicine
Power Doppler sonography in tenosynovitis: significance of the peritendinous hypoechoic rim
W. H. Breidahl, D. B. Stafford Johnson, J. S. Newman and R. S. Adler
Department of Radiology, University of Michigan Medical Center, Ann Arbor 48109-0030, USA.
The aim of this study was to evaluate the ability of power Doppler
sonography to distinguish between hypoechoic fluid and synovium in patients
with suspected tenosynovitis. Gray scale sonography and power Doppler
sonography were performed on 26 tendons in 24 patients with tenosynovitis
and 30 tendons in five asymptomatic volunteers. Peritendinous blood flow
was graded on a scale of 0 to 3 and the percentage of the hypoechoic rim
that contained blood flow was also noted. In the symptomatic group, flow
was demonstrated in more than 50% of the peritendinous hypoechoic rim in 17
of 26 tendons. A positive correlation was found between the power Doppler
sonographic grade and the percentage of the rim that had flow. These
results suggest that a significant proportion of the hypoechoic rim
probably represents vascularized synovium rather than complex fluid.
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