Table 1.

Diffusion tensor imaging acquisition parameters used in the study.

	Scanner 1	Scanner 2	Scanner 3
Number of diffusion weighting directions	32∗	32∗	32∗
Sequence type	2D EPI	2D EPI	2D EPI
B-factor	1000	1000	1000
Image matrix	128 ∗ 128,	112 ∗ 112,	96 ∗ 96,
	1.875 ∗	2 ∗ 2 mm	2 ∗ 2 mm
	1.875 mm
Slice spacing	4 mm	2 mm	3.6 mm
TE/TR	95/4300 ms	92/10242 ms	80/6000 ms
NEX	1	1	1
Flip angle	90	90	90

^∗Protocol based on the study by Jones et al. (1999).