TABLE 2.
Raw SNR and percent change compared with Wvoxel values for all techniques for NAA in a phantom*
| 8-channel | ||||||
|---|---|---|---|---|---|---|
| Cycle with residual water | Cycle without residual water | |||||
| Methods | SNR | % | Methods | SNR | % | |
| Wvoxel | 69.4 | – | Wvoxel | 74.6 | – | |
| RWvoxel | 69.7 | < 1% | NAAvoxel | 75.0 | < 1% | |
| GLSrw | 67.2 | −3% | GLSNAA | 70.0 | −6% | |
| FPphasing | 69.6 | < 1% | FPphasing | 74.4 | < 1% | |
| WSVD | 70.1 | < 1% | WSVD | 75.0 | < 1% | |
| RWcentral | 60.2 | −13% | NAAcentral | 63.6 | −15% | |
| 32-channel | ||||||
| Wvoxel | 86.8 | – | Wvoxel | 93.6 | – | |
| RWvoxel | 86.6 | < 1% | NAAvoxel | 94.3 | < 1% | |
| GLSRW | 83.8 | −4% | GLSNAA | 78.7 | −16% | |
| FPphasing | 86.2 | < 1% | FPphasing | 92.8 | < 1% | |
| WSVD | 87.5 | < 1% | WSVD | 94.3 | < 1% | |
| RWcentral | 70.9 | −19% | NAAcentral | 75.8 | −19% | |
| +25% | +25% | |||||
*
Data acquired using lactate-edited 3D MRSI sequence.