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Table 2 Imaging parameters for both 7-T morphological and quantitative acquisitions

From: 7-T MRI of explanted liver and ex-vivo pancreatic specimens: prospective study protocol of radiological-pathological correlation feasibility (the EXLIPSE project)

Parameter 3D CUBE IDEAL T2-w IDEAL T1-w 2D MRCP 3D MRCP MP2-RAGE MSE IDEAL fat-water 2D MRF 3D MRF
Flip angle (°) 90 90 90 90 90 4 90 1 NA NA
Inversion time (ms) NA NA NA NA NA 1000; 3200 NA NA 18 18
Echo time (ms)* 31.7 52.8 9.9 454 545 2.4 9:9:36; 13:13:52 NA NA 0.455
Echo train length 20 15 7 NA 130 NA NA NA NA NA
Repetition time (ms) 1,000 3,700 345 10,000 4,000 6.3 2,500 5 NA 7.4
Bandwidth (kHz) 125 83 83 125 125 62.5 62.5 62.5   
Number of excitations 2 4 3 1 1 1 0.5 4 1 1
Field of view (mm)** 192 × 192 180 × 180/160 × 160 180 × 180/160 × 160 180 × 180/160 × 160 180 × 180/160 × 160 192 × 192 225 × 225 225 × 225 225 × 225 225 × 225
Slice thickness (mm) 0.6 1.5 1.5 3 1 1 5 5 5 1.125
Slice spacing (mm) NA 0.3 0.3 0 NA 0 0 0 0 NA
Reconstruction matrix 512 × 512 512 × 512 512 × 512 512 × 512 512 × 512 256 × 256 256 × 256 256 × 256 192 × 192 200 × 200
Parallel imaging acceleration 2 NA 2 2 2 NA NA NA NA NA
  1. 2D Two-dimensional, 3D Three dimensional, T1-w. T1-weighted, T2-w. T2-weighted, IDEAL Iterative decomposition of water and fat with echo asymmetry and least-squares estimation, MP2RAGE Modified magnetisation prepared rapid gradient echo acquisition, MRF Magnetic resonance fingerprinting, MRCP Magnetic resonance cholangiopancreatography, MSE Multiple spin-echo
  2. *For MSE, the echo time notation is “minimum:step:maximum”
  3. **Field of view for T1-w./T2-w. IDEAL and 2D/3D MRCP were 180 mm × 180 mm for liver specimens (groups A and B) and 160 mm × 160 mm for pancreatic specimens (group C)
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