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Arnoldi, A. P.; Schlett, C. L.; Douis, H.; Geyer, L. L.; Voit, A. M.; Bleisteiner, F.; Jansson, A. F.; Weckbach, S. (2017): Whole-body MRI in patients with Non-bacterial Osteitis: Radiological findings and correlation with clinical data. In: European Radiology, Vol. 27, Nr. 6: S. 2391-2399
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Abstract

To correlate clinical findings of Non-bacterial Osteitis (NBO) with whole-body MRI (WB-MRI) findings and determine a radiologic index for NBO (RINBO) which allows standardized reporting of WB-MRI. In a prospective study, 40 patients with diagnosis of NBO underwent clinical examination and WB-MRI in which STIR- and T1- weighted images were assessed for NBO-typical lesions. Parameters of interest for RINBO were: number of radiologically active lesions (RAL), size of the patients' maximum RAL presence of extramedullary and spinal involvement. Results were tested for statistical agreement of clinical and MR-based lesion detection. RINBO was tested for correlation with clinical activity. 62/95 clinically/radiologically active lesions were found in 30/33 patients. In 45 % of the cohort, more active lesions were detected by WB-MRI than by clinical examination. RINBO was a significant predictor for the presence of clinically active lesions. WB-MRI is a powerful diagnostic tool for patients with NBO which can reveal asymptomatic disease activity. With RINBO a standardized evaluation approach is proposed which helps assessing radiologic disease burden and predicts clinical disease activity. aEuro cent Whole body MRI is a powerful diagnostic tool for patients with non-bacterial Osteitis. aEuro cent Whole body MRI can reveal asymptomatic disease activity. aEuro cent The radiologic index RINBO offers a standardized evaluation approach.