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Table 2: MRI acquisition parameters
3T T1WI 3T PDw/T2WI 3T FLAIR 3T MT On/Off 7T T1WI 7T T2*
Sequence 3D-MP2RAGE 2D-dual echo TSE 3D-TSE 3D-GRE 3D-MP2RAGE 2D-GRE
Orientation Sagittal Axial Sagittal Axial Sagittal Axial
TR (ms) 5000 2350 6000 36 6000 1000
TE (ms) 2.98 22 356 3.86 2.7 22
87 
TI (ms) 700 NA 2200 NA 800 NA
2500 2700 
Flip angle 4° 120° 180° 10° 4° 55°
5° 5° 
Slices 176 120 176 192 224 60 (2 Stacks of 30)
Voxel size (mm) 1 × 1 × 1 1 × 1 × 1.5 1 × 1 × 1 1 × 1 × 1 0.7 × 0.7 × 0.7 0.3 × 0.3 × 1
Scan time (min:sec) 8:22 5:26 8:44 8:10 10:14 8:26 (per stack)
Note:—PDw indicates proton density-weighted; MT, magnetization transfer; GRE, gradient recalled-echo; NA, not applicable.

	3T T1WI	3T PDw/T2WI	3T FLAIR	3T MT On/Off	7T T1WI	7T T2*
Sequence	3D-MP2RAGE	2D-dual echo TSE	3D-TSE	3D-GRE	3D-MP2RAGE	2D-GRE
Orientation	Sagittal	Axial	Sagittal	Axial	Sagittal	Axial
TR (ms)	5000	2350	6000	36	6000	1000
TE (ms)	2.98	22	356	3.86	2.7	22
		87
TI (ms)	700	NA	2200	NA	800	NA
	2500				2700
Flip angle	4°	120°	180°	10°	4°	55°
	5°				5°
Slices	176	120	176	192	224	60 (2 Stacks of 30)
Voxel size (mm)	1 × 1 × 1	1 × 1 × 1.5	1 × 1 × 1	1 × 1 × 1	0.7 × 0.7 × 0.7	0.3 × 0.3 × 1
Scan time (min:sec)	8:22	5:26	8:44	8:10	10:14	8:26 (per stack)