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

Table 1

IVIM DW imaging and DCE MR imaging parameters.

Parameter	DCE imaging	IVIM DW imaging
Acquisition	Axial	Axial
Repetition time (ms)	4.7	3552
Echo time (ms)	2.2	61
values (sec/mm^2)		0, 10, 20, 30, 50, 80, 100 120, 200, 700, 800
Echo-planar imaging factor		3.5
Field of view (mm)	400/250	400/250
Section thickness (mm)	4	6
Intersection gap (mm)	1	1
Flip angle (°)	5, 12	90
Parallel imaging factor		2
Imaging time (min)	8	8
Number of acquisition	10	6
Acquisition matrix	112 × 110	160 × 128