Ankylosing spondylitis other imaging findings
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Bone scintigraphy may be helpful in selected patients of ankylosing spondylitis with normal or equivocal findings on sacroiliac joint radiographs. The ratio of SI joint to sacral uptake of 1.3:1 or higher of the radionuclides is considered abnormal.
Other imaging findings
Bone scintigraphy
- May be helpful in selected patients with normal or equivocal findings on sacroiliac joint radiographs
- Qualitative assessment of accumulation of radionuclides in the SI joints may be difficult due to normal uptake in this location. Thus quantitative analysis may be more useful.
- Ratios of SI joint to sacral uptake of 1.3:1 or higher is abnormal