Table 3.
Field and resolution dependence of quality parameters
| Metabolites | Resolution | CRLBs | APE | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1.5T (%) | 3T (%) | 7T (%) | 9.4T (%) | 1.5T (%) | 3T (%) | 7T (%) | 9.4T (%) | ||
| tNAA | Low | 63 | 67 | 74 | 75 | 44 | 36 | 37 | 34 |
| Intermediate | 65 | 73 | 80 | 81 | 57 | 52 | 63 | 63 | |
| High | 4 | 71 | 82 | 83 | 4 | 58 | 74 | 74 | |
| tCr | Low | 58 | 61 | 67 | 68 | 43 | 36 | 32 | 33 |
| Intermediate | 60 | 67 | 76 | 76 | 56 | 58 | 62 | 61 | |
| High | 0 | 62 | 79 | 79 | 0 | 57 | 73 | 73 | |
| tNAA/tCr | Low | 57 | 59 | 66 | 66 | 55 | 50 | 55 | 55 |
| Intermediate | 60 | 66 | 75 | 76 | 59 | 60 | 70 | 70 | |
| High | 0 | 62 | 79 | 79 | 0 | 57 | 77 | 77 | |
Percentages of the brain volume with sufficient quality thresholded by CRLBs or APE of tNAA, tCr, and its ratio for 3 spatial resolutions at 4 B 0 fields. 100% is equal to the volume of brain fitted by highest spatial resolution. The presented values are the means of the 5 volunteers.