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Table 1 MR scan sequences parameters

From: Comparison of preoperative evaluation of malignant low-level biliary obstruction using plain magnetic resonance and coronal liver acquisition with volume acceleration technique alone and in combination

Protocol angulation T1WI axial T2WI axial FIESTA coronal 2D MRCP oblique coronal 3D MRCP coronal LAVA (oblique) coronal/axial multiphase
Sequence FSE FSE FIESTA SSFSE FRFSE LAVA
TR (ms) 400 6000.0 3.5 6000 3333 3.8
TE (ms) 8.0 85.008 1.5 798.3 1070.3 1.8
FOV (mm) 420 420 350 320 380 400
Matrix 320 × 256 288 × 224 224 × 224 384 × 288 320 × 256 288 × 200
No. of slices 20 20 20 6 113 84
Thickness (mm) 6 6 6 60.0 1.8 3
Voxel (mm) 1.3 × 1.6 × 6 1.5 × 1.9 × 6 1.6 × 1.6 × 6 0.8 × 1.1 × 60 1.2 × 1.5 × 1.8 1.4 × 2 × 3
Space (mm) 2.0 2.0 1.0 0.0 −0.90 −1.50
Bandwidth (kHz) 31.2 41.7 125 31.2 41.7 62.5
NEX 2.00 2.00 1.00 0.56 0.38 0.72
Respiratory Breath-hold Trigger Trigger Breath-hold Trigger Breath-hold
  1. MR magnetic resonance, MRCP magnetic resonance cholangiopancreatography, LAVA liver acquisition with volume acceleration, FIESTA fast imaging employing steady-state acquisition, FSE fast spin-echo, SSFSE single shot fast spin-echo, FRFSE fast relaxation fast spin-echo, TR time of repeat, TE time of echo, FOV field of view, NSA number of signal average, NEX number of excitations