Table 1.
Comparison of IP and SPURS initialization methods on a single scanner over 5 healthy subjects. Initialization time and ROI values for liver proton density fat fraction (PDFF), R2* and susceptibility are tabulated. p-value for the paired t-test and coefficient of determination (r2), and slope (k) for linear regression are tabulated for ROI data.
| Healthy subject # | Initialization (min) | PDFF (%) | R2* (Hz) | QSM (ppm) | ||||
|---|---|---|---|---|---|---|---|---|
| IP | SPURS | IP | SPURS | IP | SPURS | IP | SPURS | |
| 1 | 7 | 76 | 2.5 | 2.5 | 31 | 31 | −0.11 | −0.14 |
| 2 | 8 | 26 | 2.1 | 2.1 | 37 | 37 | 0.004 | 0.01 |
| 3 | 7 | 31 | 2 | 2 | 30 | 30 | 0.06 | 0.09 |
| 4 | 9 | 60 | 4.4 | 4.4 | 31 | 31 | −0.005 | −.005 |
| 5 | 10 | 54 | 2.3 | 2.3 | 44 | 44 | 0.12 | 0.11 |
| p-value | 1 | 1 | 0.98 | |||||
| r2 | 1 | 1 | 0.96 | |||||
| K | 1 | 1 | 1.14 | |||||