Table 1. Details for scans on the five medical imaging devices.
| Variable | CT | MRI | ||||
|---|---|---|---|---|---|---|
| STCT | DECT | CBCT | MRI 1.5 T | MRI 3 T | ||
| Energy level | 120 KVp | 40 KeV | 60 KVp | |||
| Overlapping | No | No | No | |||
| Filter | Tissue | Tissue | HD | |||
| Sequence | Sagittal 3D cube | Sagittal 3D cube | ||||
| n of excitations (NEX) | 0.5 | 1 | ||||
| Eco train | 80 | 60 | ||||
| Coil | Quad knee | 16-ch gem flex medium | ||||
| Repetition time (TR) (ms) | 2.5 | 1.5 | ||||
| Echo time (TE) (ms) | 8.0 | 3.0 | ||||
| Flip angle | Variable | Variable | ||||
| Receive bandwidth (kHz) | 62.0 | 83.3 | ||||
| Zero fill interpolation (ZIP) | 512 | No | ||||
| Slice thickness (mm) | 0.8 | 0.6 | 0.26 | 0.8 | 0.8 | |
| Slice spacing (mm) | 0.8 | 0.6 | 0.26 | 0 | 0 | |
| Scan field of view (FOV) (mm) | 150 | 150 | 230 | 200 | 200 | |
| Voxel size (mm) | 0.29×0.29×0.8 | 0.29×0.29×0.6 | 0.26 Isotropic | 0.69×0.69×0.8 | 0.63×0.63×0.8 | |
| Matrix | 512×512 | 512×512 | 884×884 | 288×288 | 320×320 | |
CT, computed tomography; MRI, magnetic resonance imaging; STCT, standard CT; DECT, dual energy CT; CBCT, cone-beam CT.