Abstract
Up to now 42 patients with clinically suspected diagnosis of sacroiliitis (including 19 patients with confirmed spondylitis ankylosans) and 12 healthy volunteers were examined via magnetic resonance tomography. In oblique sections parallel to the plane of the sacrum the signal intensity patterns from normal and pathological tissues of the sacroiliac articulations were evaluated by plain T1-weighted spin-echo sequences and T2*-weighted FLASH sequences. In addition we used a dynamic FLASH measurement following intravenous application of gadolinium-DTPA for quantitative calculation of signal-time courses. This method has proved to be capable of definitely differentiating normal findings of sacroiliac articulations from inflammatory changes (p = 0.0001) and also enables quantification of the inflammatory activity.
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