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Table 2: 
Comparison of ratios of metabolites to tissue water in fetuses and PNs
Metabolite Ratio Fetuses (n = 20 or 19^a) PNs (n = 20) Unpaired t Test, P Value
TE = 30 ms 
    NAA/H₂O 2.19 ± 0.19 2.76 ± 0.16 .0279
    tCr/H₂O 2.18 ± 0.20 2.80 ± 0.16 .0184
    Cho/H₂O 2.98 ± 0.21 3.53 ± 0.22 .0818
    Glx/H₂O 5.36 ± 0.35 6.38 ± 0.29 .0324
    Tau/H₂O 0.56 ± 0.09 0.63 ± 0.06 .6525
    mIns/H₂O 1.64 ± 0.17 2.17 ± 0.17 .0332
    Lipids/H₂O 9.98 ± 2.44 7.28 ± 0.65 .2986
TE = 135 ms 
    NAA/H₂O 2.00 ± 0.22 2.07 ± 0.12 .7685
    tCr/H₂O 1.33 ± 0.21 1.30 ± 0.07 .8697
    Cho/H₂O 3.50 ± 0.20 3.47 ± 0.16 .8891
    Lac/H₂O 0.00 ± 0.00 0.00 ± 0.00 

Note:—Data are mean ± SEM.


a n = 20 for a TE of 30 ms and 19 for TE of 135 ms.

Metabolite Ratio	Fetuses (n = 20 or 19^a)	PNs (n = 20)	Unpaired t Test, P Value
TE = 30 ms
NAA/H₂O	2.19 ± 0.19	2.76 ± 0.16	.0279
tCr/H₂O	2.18 ± 0.20	2.80 ± 0.16	.0184
Cho/H₂O	2.98 ± 0.21	3.53 ± 0.22	.0818
Glx/H₂O	5.36 ± 0.35	6.38 ± 0.29	.0324
Tau/H₂O	0.56 ± 0.09	0.63 ± 0.06	.6525
mIns/H₂O	1.64 ± 0.17	2.17 ± 0.17	.0332
Lipids/H₂O	9.98 ± 2.44	7.28 ± 0.65	.2986
TE = 135 ms
NAA/H₂O	2.00 ± 0.22	2.07 ± 0.12	.7685
tCr/H₂O	1.33 ± 0.21	1.30 ± 0.07	.8697
Cho/H₂O	3.50 ± 0.20	3.47 ± 0.16	.8891
Lac/H₂O	0.00 ± 0.00	0.00 ± 0.00