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Table 1: Sequence parameters
Parameter Cartesian T2WI TSE MultiVane T2WI TSE Spiral T2WI TSE
Technique 2D TSE 2D TSE 2D TSE
FOV AP/FH/RL (mm) 230 × 230 × 149  230 × 230 × 149  230 × 230 × 149 
Acquired voxel size (mm³) 0.7 × 0.7 × 4.0  0.7 × 0.7 × 4.0  0.7 × 0.7 × 4.0 
Reconstructed voxel size (mm³) 0.45 × 0.45 × 4.0  0.45 × 0.45 × 4.0  0.45 × 0.45 × 4.0
No. of slices 30 30 30
TR (ms) 5300  5300  5300
TE equivalent (ms) 90  90  90 
Flip angle 90° 90° 90°
Refocusing flip angle 180° 180° 180°
TSE factor 28 30 8
Spiral acq window – – Spiral in-out, 11.4 ms
Parallel imaging No SENSE 1.5 No
NSA 2 1 2
Receiver bandwidth (Hz/pixel) 560  290  114 
SAR (W/kg) <1.9 <2.0 <1.6
dB/dT (T/s) 52 33 72
Acquisition time (min:sec) 04:14 02:49 02:12
Note:—NSA indicates number of signal averages; acq, acquisition; SAR, specific absorption rate; dB/dT, ratio between the amount of change in amplitude of the magnetic field (dB) and the time it takes to make that change (dt); T/s, Tesla/second; AP/FH/RL, anterior-posterior/foot-head/right-left; –, scan parameter does not exist for this sequence.