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Table 1 Parameters of the standard MR imaging sequences of liver used in the study

From: Hepatic magnetic resonance elastography: can it be an alternative to invasive biopsy preceding living donor liver transplantation?

MRI sequences Non-contrast scans Non-contrast fat suppressed scans Contrast-enhanced fat suppressed scans
T1SGRE (in-phase and out-of-phase) T2W-SS-FSE T2W-RARE T2*WI STIR DWI + STIR DCE-MRI
Type of scan Breath-hold SGRE SS-FSE Respiratory-triggered RARE FGRE STIR SSh-EPI + STIR Breath-hold 3D-T1W SGRE -LAVA + STIR
Imaging plane Axial and coronal Axial and coronal Axial and coronal Axial and coronal Axial and coronal Axial Axial
TR/ TE (ms) [in-phase]
= 126/4.6
[out-of-phase]
=126/2.3
[in-phase]
= 126/4.6
[out-of-phase]
=126/2.3
4000/102 100/15 418/80 4500–6000/80–120 4.4/2.1
TI (ms) (for fat suppression) 140 140 140
NEX 1 1 1 1 1 2 1
FOV (mm3) 320 × 320 × 150 340 × 350 × 150 320 × 320 × 150 340 × 340 × 150 340 × 340 × 150 340 × 350 × 150 26 × 26
ST (mm) 3–5 3–5 5–7 5–7 5–7 5–7 3–5
Flip angle (°) 12 90 90 30 10 90 12
Intersection gap (mm) 0 0 1–2 0 0 0 0
Matrix 179 × 256 320x192 384 × 224 320x288 256 × 256 128 × 128 160 × 192
Acquired voxel size (mm3) 1.00 × 1.42 × 3.0 1.00 × 1.42 × 3.0 1.25 × 1.52 × 3.0 1.25 × 1.52 × 3.0 1.25 × 1.52 × 3.0 1.49 × 1.50 × 3.0 0.99 × 1.03 × 1.0
Scan time (min) 2:28 2:28 2:28 2:28 2:28 3:33 7:42
  1. T1SGRE T1-spoiled gradient recalled echo, RARE rapid acquisition relaxation enhanced, T2W-SS-FSE T2W-single shot-fast-spin echo, T2WFSE T2-weighted fast spin-echo, FGRE fast gradient echo, FS fat suppression, STIR short time inversion recovery, SSh-EPI single shot-echo planar imaging, 3D SGRE-T1WI three-dimensional spoiled gradient echo T1-weighted image, LAVA liver acquisition with volume acceleration, FOV field of view, (°) degrees, ST slice thickness, mm millimeters, mm3 cubic millimeters, min minutes