Table 1.
Full breast axial 3T protocol, 16-channel breast array.
| Sequences | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|
| Series descriptor | 3D axial T2 | 3D axial T1 | 3D axial DISCO | 2D axial DWI | 2D axial MDD DWI |
| Sequence type | Fast-Spin Echo | Gradient-Echo VIBRANT | Gradient-Echo | Spin-Echo EPI | Spin-Echo EPI |
| Field of view (cm) | 34–38 | 34–38 | 34–38 | 34–38 | 34–38 |
| Slice thickness (mm) | 3 | 1.1 | 1.1 | 3.9 | 3.9 |
| Gap (mm) | 3 | 0 | 0 | 0 | 2.7 |
| Fat saturation | Yes | No | Yes | Yes | Yes |
| TE (ms) | Minimum | Minimum | Minimum | Minimum | 98 |
| TR (ms) | 2500–6000 | 4–4.5 | 4–4.5 | 2000–6000 | 2700–5000 |
| Matrix size (mm) | 512 × 512 | 512 × 512 | 512 × 512 | 256 × 256 | 128 × 128 |
| Flip angle | 111 | 10 | 12 | 90 | 90 |
| Direction | ALL | ALL | |||
| Number of directions | 3 | 43 | |||
| b-values (s/mm2) | 0, 800 | 100, 700, 1400, 2000 | |||
| Frequency direction | A/P | A/P | A/P | A/P | A/P |
| Scan time (min:sec) | 2:32 | 1:30 | 5–6 1 | 4:02 | 4:12 |
Abbreviations: A/P, anterior/posterior; DISCO, differential subsampling with Cartesian ordering; EPI, echo planar imaging; MDD, multidimensional diffusion; VIBRANT, volume imaging for breast assessment. 1 For a total of 10–13 phases with a temporal resolution of 12 ms.