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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
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