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

Figure 2

Dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) in a 16-year-old male patient with duration of 3-year diagnosed ankylosing spondylitis (AS). On the contrast-enhanced T1-weighted MR image, four ROIs were drawn on each side of the juxta-articular bone marrow with sacroiliitis. The four time-signal intensity curves (TSICs) showed four measurements of relative enhancement (RE), maximum enhancement (ME), time to peak (TTP), and brevity of enhancement (BE).