Table 1.
Imaging sequences
| Data number | Schedule | Head position | Imaging plane | MPG axes | Average | TE (ms) | Scanner |
|---|---|---|---|---|---|---|---|
| Test–retest study | |||||||
| 1a | Day 1 | Neutral | AC-PC | 12 | 2 | 85 | Centurian |
| 1b | Day 1 | Neutral | AC-PC | 12 | 2 | 85 | Centurian |
| 1c | Day 2 | Neutral | AC-PC | 12 | 2 | 85 | Centurian |
| 1d | Day 2 | Neutral | AC-PC | 12 | 2 | 85 | Centurian |
| Effect of the imaging plane and head position | |||||||
| 2a | Day 1 | Neutral | IM line | 12 | 2 | 85 | Centurian |
| 2b | Day 1 | Chin-up | AC-PC | 12 | 2 | 85 | Centurian |
| Effect of averaging and the number of MPG axes | |||||||
| 3a | Day 2 | Neutral | AC-PC | 12 | 4 | 85 | Centurian |
| 3b | Day 2 | Neutral | AC-PC | 30 | 1 | 85 | Centurian |
| 3c | Day 2 | Neutral | AC-PC | 3 | 4 | 85 | Centurian |
| Effect of diffusion time | |||||||
| 4a | Day 2 | Neutral | AC-PC | 12 | 2 | 100 | Centurian |
| 4b | Day 2 | Neutral | AC-PC | 12 | 2 | 65 | Centurian |
| Effect of using different scanners | |||||||
| 5 | Day 2 | Neutral | AC-PC | 12 | 2 | 85 | Prisma |
MPG motion-proving gradients, TE echo time, Neutral the head position in which the laser marker light runs through the inferior margin of the orbit and the external auditory meatus, Chin-up the head position in which the laser marker light runs through the upper lip and the external auditory meatus, AC-PC anterior commissure-posterior commissure line, IM line infra-orbital meatal line, which is the line drawn from the inferior margin of the orbit to the orifice of the external acoustic meatus