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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)