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. Author manuscript; available in PMC: 2021 Oct 1.
Published in final edited form as: Magn Reson Med. 2020 Mar 2;84(4):1747–1762. doi: 10.1002/mrm.28231

Table 2.

Different scan parameters for the experiments used with (0.9mm)3 resolution.

Objective SNR comparison SNR comparison SNR comparison 3D SNR comparison 3D SNR comparison
2D (MB = 2) 2D (MB = 3) Thin Slab long TR Thin Slab short TR (MB = 2) Thick slab short TR 3D Multi-shell
Protocol AA2 AA3 D1 D2 E F
2D/3D 2D 2D 3D 3D 3D 3D
Resolution (0.9 mm)3 (0.9 mm)3 (0.9 mm)3 (0.9 mm)3 (0.9 mm)3 (0.9 mm)3
TE(ms) 95.6 95.6 95.6 95.6 95.6 95.6
TR(ms) 12000 8000 3200 1600 1600 3050
FOV (mm3) 210*210*130 210*210*130 210×210×130 210*210*119 210×210×130 210×210×130
b-value 0/900/2000/3000 0/900/2000/3000 0/900/2000/3000 0/900/2000/3000 0/900/2000/3000 33 unique dir 17 for 1500, 16 for 3000 + 4(b=0)
FOV shift 1/2 1/3 N/A N/A N/A N/A
MB 2 3 1 2 1 1
iPAT 2 2 2 2 2 2
ESP (ms) 0.93 0.93 0.93 0.93 0.93 0.93
ETL (ms) 80.9 80.9 80.9 80.9 80.9 80.9
Partial Fourier 6/8 6/8 6/8 6/8 6/8 6/8
Average 6 9 (1 for b=0) 2 2 1 1
VAT(s) 72 72 38 19 38 37
Slice/slab 72 72 8 8 16 8
Slab 1 1 18 16 9 18
Slab overlap (slice) N/A N/A 1 1 1 1
Slab over-sampling N/A N/A 50% 50% 50% 50%
Total acq. time 3m48s+ACS 3m44s + ACS 5m04s +ACS 2m32s +ACS+SBref 2m32s+ACS 22m12s
RF pulse family Optimized Sinc Optimized Sinc HS1 HS2 HS1 HS1
Exc/Ref BWTP ~3.2/ 5.2 ~3.2/ 5.2 8/16 8/12 8/16 8/16
Exc/Ref Duration (us) 2560/4480 2560/4480 7680/7680 7680/7680 7680/7680 7680/7680
Exc/Ref Flip angles 90°/180° (78°/160°) 90°/180° (78°/160°) 90°/180° (70°/160°) 90°/180° (70°/160°) 90°/180° (70°/160°) 90°/180° (70°/160°)