Table 2.
3.0T | 1.5T | P-value † | |||
---|---|---|---|---|---|
Measured Lipid Ratio | Concentration * | CV | Concentration * | CV | |
Soleus a | |||||
IMCL | 830.3 ± 92.1 | 12.0 | 675.3 ± 91.1 | 9.6 | 0.50 |
EMCL | 983.2 ± 156.7 | 11.6 | 992.3 ± 158.2 | 6.1 | 0.06 |
| |||||
Tibialis anterior b | |||||
IMCL | 139.5 ± 15.8 | 26.4 | 131.3 ± 12.8 | 20.3 | 0.02 |
EMCL | 180.6 ± 27.0 | 21.5 | 188.4 ± 39.5 | 22.6 | 0.49 |
, Data are mean lipid ratio concentrations, in institutional units, ± standard errors of the mean. Concentrations are averages across
H MR spectroscopic data from both visits.
Comparison between mean CVs at 3.0T and 1.5T using Wilcoxon matched pairs signed rank test.
, 9 subjects, 18 spectra.
, 15 subjects, 30 spectra.
CV, mean interexamination coefficient of variation (standard deviation/mean) in percent.
IMCL, intramyocellular lipid methylene protons (1.3 ppm) and EMCL, extramyocellular lipid methylene protons (1.5 ppm), both scaled to unsuppressed water peak (3.0 ppm).