. Author manuscript; available in PMC: 2008 Sep 1.

Published in final edited form as: Magn Reson Imaging. 2007 Jan 18;25(7):1105–1111. doi: 10.1016/j.mri.2006.12.003

Table 2.

Mean concentration and interexamination coefficients of variation of lipid measurements obtained at 3.0T and 1.5T.

	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).