Table 1.
Coefficients of variation (95% confidence intervals) for each cerebral metabolite ratio by voxel and algorithm
| Voxel location | Algorithm | Cerebral metabolite ratio |
||
|---|---|---|---|---|
| NAA/Cr | Cho/Cr | mI/Cr | ||
| Frontal grey matter | TARQUIN | 25.5 (17.5–47.2) | 16.2 (11.3–29.1) | 24.1 (16.6–44.4) |
| jMRUI | 10.8 (7.5–20.0) | 14.9 (10.2–27.8) | 52.4 (33.8–121) | |
| Frontal white matter | TARQUIN | 21.2 (14.7–38.7) | 13.5 (9.4–24.1) | 30.7 (20.9–58.1) |
| jMRUI | 11.8 (8.2–20.9) | 20.9 (14.4–37.9) | 59.7 (38.6–138) | |
| Right basal ganglia | TARQUIN | 15.2 (10.6–27.3) | 13.3 (9.2–23.6) | 39.0 (26.2–77.1) |
| jMRUI | 21.2 (14.6–38.7) | 14.8 (10.3–26.5) | 72.9 (45.6–192) | |
Cho, choline; Cr, creatine; jMRUI, java-based version of the MR user interface; mI, myo-inositol; NAA, N-acetylaspartate; TARQUIN, totally automatic robust quantitation in nuclear MR.