Acquisition Parameters
| MR parameters | MRAC Dixon AC | MRAC UTE AC | MPRAGE |
| Acquisition time (min) | 00:19 | 01:40 | 04:45 |
| Voxel size (mm) | 2.6 × 2.6 × 3.12 | 1.6 × 1.6 × 1.6 | 1.1 × 1.1 × 1.2 |
| Orientation | Coronal | Transverse | Sagittal |
| Slices per slab | 128 | 192 | 176 |
| Matrix size | 192 × 126 | 192 × 192 | 256 × 256 |
| Field of view (mm) | 500 | 300 | 270 |
| Repetition time (ms) | 3.60 | 11.94 | 2,100 |
| First and second echo time (ms) | 1.23 and 2.46 | 0.07 and 2.46 | 2.95 |
| Flip angle | 10.0° | 10.0° | 9.0 |
| Parallel acquisition technique mode | GRAPPA 2 (Siemens) | None | GRAPPA 2 (Siemens) |
| PET parameters | |||
| Emission scan | 5 min | ||
| Reconstruction iterations | 3 | ||
| Reconstruction subsets | 21 | ||
| Postreconstruction filter | Gaussian, 4 mm | ||
| Number of slices | 127 | ||
| Matrix | 256 × 256 | ||
| Orientation | Transverse | ||
| Voxel size (mm) | 1.4 × 1.4 × 2.03 |
AC = attenuation correction; GRAPPA = generalized autocalibrating partially parallel acquisition; MRAC = MR-based attenuation correction.