Abstract #2785

Assessment of Ankylosing Spondylitis Activity with Intravoxel Incoherent Motion Diffusion Weighted and Dynamic Contrast-Enhanced MR Imaging

Mengyue Wang¹, Wentao Wang², Lei Xu¹, Liang Qi¹, and Yuefen Zou¹

¹Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China, ²The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China

Effective diagnosis of ankylosing spondylitis (AS) activity plays an important role for clinical treatment and prognosis. In our study, we used intravoxel incoherent motion (IVIM) and dynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI) to differentiate the active and chronic stage of AS. As a result, we found that D_slow, K^trans and V_e had a high diagnostic sensitivity and specificity.

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