Table 2.

Healthy control DTI data acquisition parameters (n = 1 subject, n = 9 DTI scans)

Scanning session	DTI scan #	Field strength	FOV (mm)	b value (s/mm2)	# Directions	# b0	NEX	TR (msec)	TE (msec)	In-plane resolution (mm)	Slice thickness (mm)	Inter-slice gap (mm)	Matrix
1	1	3 T	256	700	12	2	5	8000	84	2.0 × 2.0	5	1.0	128 × 128
2	2	3 T	220	1000	25	3	1	4800	91	1.4 × 1.4	5	1.0	160 × 160
3	3	3 T	220	1000	25	3	3	5300	108	1.4 × 1.4	5	1.0	160 × 160
4	4	1.5 T	220	1000	6	1	3	5000	88	1.72 × 1.72	5.0	1.0	128 × 128
5	5	1.5 T	220	1000	6	1	3	5000	88	1.72 × 1.72	5.0	1.0	128 × 128
	6	1.5 T	220	1000	6	1	3	5000	88	1.72 × 1.72	5.0	1.0	128 × 128
6	7	1.5 T	220	1000	6	1	3	5000	88	1.72 × 1.72	5.0	1.0	128 × 128
	8	1.5 T	220	1000	6	1	3	9400	88	2.0 × 2.0	2.0	0	110 × 110
	9	1.5 T	220	1000	25	3	1	5000	88	1.72 × 1.72	5.0	1.0	128 × 128

The control subject’s first three DTI scans were performed on three different 3 Telsa MRI scanners on different days, whereas the next six DTI scans were performed on a 1.5 Tesla MRI scanner on a single day during three separate scanning sessions over a 2-hour period. Abbreviations: b0 b = 0 s/mm², FOV field of view, NEX number of excitations (i.e. number of averages), T Tesla, TE echo time, TR repetition time, # number of