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. 2014 Mar;35(3):519–523. doi: 10.3174/ajnr.A3795

Parameters for all sequences

Parameter 3D DIR 2D FLAIR 2D T1 SE 3D T1 TSE
TR (ms) 5500 11,000 600–700 400
TE (ms) 251 125 10 26
TI (ms) 625–2600 2800 N/A N/A
Echo-train length 173 31 N/A 30
No. of sections/slab 300 31 36 267
Section thickness (mm) 1.3 5 4 1.2 (reformat 4)
Matrix size 208 × 208 276 × 126 232 × 165 256 × 215
Voxel size (mm) 1.2 × 1.2 × 1.3 0.85 × 1.42 × 5 1 × 1.10 × 4 1 × 1.10 × 1.2 (reformat 1 × 1.10 × 4)
FOV (mm) 250 × 250 230 × 176 230 × 182 250 × 237
Acquisition plane Sagittal Axial Axial Sagittal
Acquisition time 6 min 30 sec 2 min 56 sec 3 min 30 sec 5 min 30 sec

Note:—N/A indicates not applicable; No. of sections, number of sections acquired; reformat, 4-mm-thick axial reformatted views of the 3D T1 TSE sequence; 2D, T1 SE images and 4-mm-thick axial reformatted views of the 3D T1 TSE sequence with the same voxel size.