The current diagnosis of the sacroiliac joint lesions with axSpA is most concentrated on qualitative or semi-quantitative methods.There is an urgent need for a quantitative method that can objectively and accurately evaluate the severity of the disease.Synthetic MRI(MAGiC) can generate multiple contrast images and quantitative maps simultaneously based on the same scan.In this study the synthetic MRI can achieve similar qualitative diagnostic performance in detection of sacroiliac joint lesions compared with conventional MRI.And it could be used for distinguishing BME and fat metaplasia.
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