Estimated concentrations (mmol/l) from LCModel fit
| Metabolite | Hamartoma | Thalamus | Amygdala |
|---|---|---|---|
| NAA | 6.28 (12) | *9.22 (9) | 6.12 (12) |
| Cho | 1.87 (10) | **1.29 (12) | 1.93 (11) |
| Cr | 5.31 (14) | 6.17 (12) | 5.71 (13) |
| MI | 10.5 (8) | *3.1 (20) | *6.0 (12) |
| Glx | 9.5 (25) | 7.7 (22) | 10.1 (21) |
| NAA/Cho† | 3.36 (15) | *7.15 (14) | 3.17 (16) |
| NAA/Cr† | 1.18 (18) | **1.49 (15) | 1.07 (17) |
| Cho/Cr† | 0.35 (15) | 0.21 (18) | 0.34 (19) |
Note.—The numbers in parentheses are the estimated LCModel SD expressed as percentages of the estimated concentrations.
* Value differs significantly from that of the hamartoma (no overlaping of the 95% confidence intervals [ie, t > 3.9; P < 0.001])
** P < .02.
† The calculated ratios represent concentration ratios and not ratios of peak areas; effects of T2 are negligible, because of the short TE. The SDs of the ratios were derived from the SD of the concentrations by error multiplication.