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Acquisition parameters of EPIMix and routine protocols
Imaging Parameter EPIMix MR Imaging Routine Brain MR Imaging
T1-FLAIR T2WI T2-FLAIR DWI T2*WI T1-FLAIR T2WI T2-FLAIR DWI SWAN
FOV (cm) 24 24 24 24 24 22 22 22 22 22
Section thickness (mm) 5 5 5 5 5 5 5 5 5 1.2
TR (ms) 1300 2447 5818 2447 2542 2400 5175 9000 5417 32.8
TI (ms) 570.2 2751 850 2465 
TE (ms) 19.3 109 115 109 30.5 25.8 119.4 102.7 73.1 22.9
ETL (ms) 5 26 32 1 3
Frequency matrix 180 180 180 180 180 360 512 288 128 288
Phase matrix 180 180 180 180 180 280 512 288 192 260
Flip angle 90° 90° 90° 90° 90° 90° 90° 90° 90° 15°
Bandwidth (kHz) 250 250 250 250 250 50 50 41.67 250 41.67
Parallel imaging acceleration factor ARC 3 ARC 3 ASSET 2.5 ASSET 2.5
Net scan time (min:sec) 1:12 1:58 2:29 2:25 1:19 2:33
Total scan time (min:sec) 1:28 1:58 2:56 2:49 1:37 2:39
Note:—ARC indicates autocalibrating reconstruction for Cartesian imaging; ASSET, array spatial sensitivity encoding technique; ETL, echo-train length.