Table 1.

Double diffusion encoding schemes and parameters.

	Orientationally Invarianta	Filter-Probeb
G1 directions	Orthogonal: 60 (12 unique) Parallel: 12	Perpendicular to Cord: 2 (+ & −)
G1 b-values (s/mm2)	2,000	2,000
G2 directions	Orthogonal to G1: 60 Parallel to G1: 12	Parallel to Cord: 2 (+ & −)
G2 b-values (s/mm2)	2,000	9 increments: 0–2,000
Non-DWI (b = 0)	0	0
Total Acquisitions	72	36

^aJespersen et al. (2013).

^bSkinner et al. (2016).