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

Table 2

Distribution of IVIM and DCE-MRI parameters in sacroiliitis with AS.

Parameters	Reader 1 ()	Reader 2 first session	Reader 2 second session	Total; ()
RE (%)					0.037	0.963
ME (%)					0.048	0.953
TTP (s)					0.059	0.942
BE (s)					0.092	0.912
Ds (×10^−3 mm^2/s)					0.043	0.957
					0.193	0.825
Df (×10^−3 mm^2/s)					0.173	0.841

RE: relative enhancement; ME: maximum enhancement; TTP: time to peak; BE: brevity of enhancement; Ds: pure diffusion coefficient; : perfusion fraction; Df: pseudo-diffusion coefficient. Data are a mean ± standard deviation. One-way ANOVA. Statistically significant ().