MR Vendor | Algorithm Development# (N = 264) | External Set* (N = 60) | Typical parameters (DWI sequence) | ||
---|---|---|---|---|---|
Training set (N = 208) | Validation set (N = 28) | Testing set (N = 28) | |||
3.0 T Discovery (Ge healthcare, Milwaukee, WI) | N = 157 | N = 20 | N = 20 | N = 41 | B value: 0, 800 s/mm2; Imaging matrix:256 × 256; Echo time: 60 ms; Repetition time: 3000 ms; Field of view: 360 mm; Section thickness: 4 mm Number of slices: 25 |
3.0 T Intera (Philips Medical Systems, Best, the Netherlands) | N = 37 | N = 5 | N = 5 | N = 11 | B value: 0, 1000 s/mm2; Imaging matrix: 240 × 240; Echo time:78 ms; Repetition time: 4959 ms; Field of view: 360 mm; Section thickness:7 mm Number of slices: 28 |
1.5 T Avanto (Siemens Medical Solutions, Erlangen, Germany) | N = 14 | N = 3 | N = 3 | N = 8 | B value: 0, 800 s/mm2; Imaging matrix: 156 × 180; Echo time:54 ms; Repetition time: 3300 ms; Field of view: 360 mm; Section thickness: 7 mm Number of slices: 24 |