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Table 2 MRI sequence parameters for scanning

From: Developmental brain trajectories in children with ADHD and controls: a longitudinal neuroimaging study

Sequence T1w T2w DWI fMRI QSM
Type MEMPRAGE T2-SPACE Shell 1 Shell 2 Shell 3 Blip Up/Down rs-fMRI Blip Up/Down Multi-echo
 TR (ms) 2530 3200 3200 3200 3200 3200 1500 3980 52
 TE (ms) 1.77, 3.51 5.32, 7.2 532 110 110 110 110 33 33 7.38, 14.76, 22.14, 29.52, 36.90, 44.27
 TI (ms) 1260 - - - - - - - -
 Flip angle (deg) 7 - 90 90 90 90 85 85 15
 Slices 176 176 63 63 63 63 60 60 -
 Voxel size (mm3) 0.9 0.9 2.4 2.4 2.4 2.4 2.5 2.5 1.0
 FoV read (mm) 230 240 260 260 260 260 255 255 256
 FoV phase (%) 90.6 89.8 100 100 100 100 100 100 68.8
 Matrix 256 × 232 256 × 230 110 × 110 110 × 110 110 × 110 110 × 110 104 × 104 104 × 104 256 × 176
 Band width (Hz/Px) 723, 751, 651, 651 610 1748 1748 1748 1748 1718 1718 210, 210, 210, 210, 210, 210
 Echo spacing (ms) 10.1 3.76 0.69 0.69 0.69 0.69 0.69 0.69 -
 Orientation S S T T T T T T T
 B value (s/mm2) - - 2800 2000 1000 0 - - -
 No. directions/b = 0 s - - 60/4 45/6 25/6 -/2 - - -
 Multi-band factor - - 3 3 3 3 3 1 -
 Acquisition time 6 m 52 s 4 m 8 s 3 m 57 s 3 m 15 s 2 m 11 35 s (x 2) 6 m 33 s 24 s (x 2) 8 m 43 s
  1. S sagittal, T transversal