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Table 1 Parameters for water and tissue phantom image acquisition in the test-retest study

From: MRI texture feature repeatability and image acquisition factor robustness, a phantom study and in silico study

 

A

B

C

D

E

F

Weighting

T2

T2

T2

T1

T1

T1

Repetition time (ms)

3,000

3,000

3,000

323

323

323

Echo time (ms)

82

82

82

4.76

4.76

4.76

Number of excitations

32

1

1

32

1

1

Matrix

256 × 256

256 × 256

128 × 128

256 × 256

256 × 256

128 × 128

Slice thickness (mm)

5

5

5

5

5

5

Pixel spacing (mm)

1.18

1.18

2.34

1.17

1.17

2.34

Echo train length

24

24

24

2

2

2

Bandwidth (kHz)

300

300

300

455

455

455

Flip angle (°)

150

150

150

70

70

70

Field of view (mm)

243 × 300

243 × 300

243 × 300

225 × 300

225 × 300

225 × 300

Slice spacing (mm)

5.5

5.5

5.5

5.5

5.5

5.5

  1. Sequences A and D provided high signal-to-noise ratio and high spatial resolution, while sequences B and E provided reduced signal-to-noise ratio, and C and F also reduce the resolution