Table 4 Reproducibility results using 11 left brain pairs of spectra from eleven subjects
From: Reproducibility of brain metabolite concentration measurements in lesion free white matter at 1.5 T
Glx all metabolites with free parameter | Glu. Gln ref Naa | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Protocol | 0 | 1 | 1a | 2 | 3 | 3a | 8 | 09a | 10 | 11a |
Naa | 3.1 | 8.8 | 2.9 | 4.4 | 16.4 | 5.5 | 2.9 | 2.9 | 3.3 | 3.2 |
Cre3 | 5.4 | 6.0 | 5.5 | 5.3 | 7.6 | 5.9 | 5.4 | 5.5 | 5.6 | 5.5 |
Cho | 4.5 | 6.1 | 4.7 | 4.6 | 11.0 | 7.6 | 4.4 | 4.4 | 4.7 | 7.2 |
Myo | 8.3 | 9.8 | 9.7 | 17.4 | 52.6 | 46.5 | 6.8 | 6.4 | 11.3 | 33.5 |
Glx | 153.1 | 167.5 | 159.0 | 82.0 | 127.1 | 115.6 | 13.6 | 12.8 | 5.2 | 5.0 |
all | 174.4 | 198.3 | 181.7 | 113.7 | 214.7 | 181.1 | 33.2 | 31.9 | 30.1 | 54.4 |
Naa. Cre3. Cho | 13.0 | 21.0 | 13.1 | 14.2 | 35.0 | 19.0 | 12.8 | 12.7 | 13.6 | 15.9 |
all–Myo | 166.1 | 188.4 | 172.0 | 96.3 | 162.1 | 134.6 | 26.4 | 25.5 | 18.8 | 20.9 |
all–Glx | 21.3 | 30.8 | 22.7 | 31.6 | 87.6 | 65.6 | 19.6 | 19.1 | 24.9 | 49.4 |
Mean χ2 | 3819 | 3617 | 3839 | 5574 | 4731 | 5120 | 3742 | 3765 | 5040 | 4941 |
Glu. Gln all metab. with free parameter | Glu. Gln. all free + co. dam. | |||||||||
Protocol | 4 | 5 | 5a | 6 | 7 | 7a | 12 | 13a | 14 | 15a |
Naa | 3.3 | 12.0 | 3.4 | 4.7 | 9.8 | 7.7 | 2.9 | 2.8 | 3.2 | 5.2 |
Cre3 | 5.3 | 4.8 | 5.3 | 5.3 | 5.9 | 5.1 | 4.3 | 4.3 | 5.1 | 5.5 |
Cho | 4.2 | 5.4 | 4.1 | 4.1 | 8.6 | 5.1 | 3.7 | 3.6 | 3.3 | 5.5 |
Myo | 13.8 | 15.9 | 12.1 | 6.4 | 39.9 | 31.1 | 6.3 | 5.1 | 8.7 | 17.3 |
Glx | 25.9 | 25.0 | 22.8 | 5.0 | 14.4 | 7.5 | 13.1 | 12.1 | 6.1 | 6.9 |
all | 52.5 | 63.0 | 47.8 | 25.4 | 78.6 | 56.4 | 30.3 | 27.9 | 26.3 | 40.3 |
Naa. Cre3. Cho | 12.8 | 22.1 | 12.8 | 14.0 | 24.3 | 17.8 | 10.9 | 10.7 | 11.5 | 16.2 |
all–Myo | 38.7 | 47.1 | 35.6 | 19.1 | 38.7 | 25.3 | 24.0 | 22.8 | 17.6 | 23.1 |
all–Glx | 26.6 | 38.0 | 24.9 | 20.4 | 64.2 | 48.9 | 17.2 | 15.8 | 20.2 | 33.5 |
Mean χ2 | 3651 | 3475 | 3751 | 4773 | 4399 | 4667 | 3757 | 3786 | 5041 | 4891 |
Glu. Gln ref Naa + common damping | ||||||||||
Protocol | 16 | 17a | 18 | 19a | 20 | |||||
Naa | 2.8 | 2.7 | 3.2 | 3.1 | 3.0 | |||||
Cre3 | 4.4 | 4.4 | 5.2 | 4.9 | 4.9 | |||||
Cho | 3.5 | 3.5 | 3.3 | 3.4 | 4.7 | |||||
Myo | 5.2 | 5.2 | 10.8 | 11.1 | 6.9 | |||||
Glx | 22.4 | 23.2 | 6.2 | 5.8 | 29.9 | |||||
all | 38.3 | 39.0 | 28.7 | 28.4 | 49.4 | |||||
Naa. Cre3. Cho | 10.7 | 10.7 | 11.7 | 11.4 | 12.6 | |||||
all–Myo | 33.1 | 33.9 | 17.9 | 17.2 | 42.5 | |||||
all–Glx | 15.9 | 15.8 | 22.5 | 22.6 | 19.6 | |||||
Mean χ2 | 3856 | 3886 | 5237 | 5138 | 5046 | |||||