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American Journal of Roentgenology, Vol 173, 677-680, Copyright © 1999 by American Roentgen Ray Society

ARTICLES

Duplex and color Doppler sonographic findings in active sacroiliitis

H Arslan, ME Sakarya, B Adak, O Unal and M Sayarlioglu
Department of Radiology, Yuzuncu Yil University, Van, Turkey.

OBJECTIVE: The aim of this study was to describe the duplex and color Doppler sonographic findings in active sacroiliitis. SUBJECTS AND METHODS: Forty-one joints in 21 patients with active sacroiliitis, 20 sacroiliac joints in 10 patients with osteoarthritis, and 30 sacroiliac joints of 15 asymptomatic volunteers were investigated on duplex and color Doppler sonography. We investigated whether a vessel was present around the posterior portions of sacroiliac joints with color Doppler sonography. When an artery was detected, the resistive index (RI) was measured using duplex Doppler sonography in all groups and also after treatment in the patients with active sacroiliitis. RESULTS: Vascularization around the posterior portions of sacroiliac joints was seen in 41 joints of the 21 patients with active sacroiliitis, nine joints of six patients with osteoarthritis, and 13 joints of eight volunteers. The mean RI values were 0.62 +/- 0.13, 0.91 +/- 0.09, and 0.97 +/- 0.03, respectively. In the patients with active sacroiliitis, the mean RI value was 0.91 +/- 0.07 after therapy. The RI values for the patients with active sacroiliitis were significantly different from those of the patients with osteoarthritis (p < .001) and of the volunteers (p < .001). In addition, the RI values were significantly different before and after treatment in the patients with active sacroiliitis (p < .001). CONCLUSION: Vascularization around the posterior portions of sacroiliac joints increased and RI values decreased in patients with active sacroiliitis. Color and duplex Doppler sonography were able to reveal these changes and can be used in the diagnosis of active sacroiliitis and follow-up after treatment. Thus, RI values may be a quantitative indicator for clinical symptoms in patients with active sacroiliitis.
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This article has been cited by other articles:


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M. Z. Pekkafali, M. Z. Kiralp, C. C. Basekim, E. Silit, H. Mutlu, E. Ozturk, E. Kizilkaya, and H. Dursun
Sacroiliac Joint Injections Performed With Sonographic Guidance
J. Ultrasound Med., June 1, 2003; 22(6): 553 - 559.
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