Skip to main content
. Author manuscript; available in PMC: 2019 Mar 1.
Published in final edited form as: Magn Reson Med. 2017 Jul 10;79(3):1260–1265. doi: 10.1002/mrm.26826

Table 1.

Measured T2 values (mean ± SD) from 5 subjects using LASER and PRESS sequences at 3 T with the corresponding two-tailed paired Student’s t-test. Mean goodness-of-fit (R2) was > 0.96 for all compounds except for mNAA which was 0.88 with PRESS. Statistically significant difference in T2 between the two sequences, i.e. P <0.05, are shown in bold.

Compounds Group LASER T2
(ms)		 PRESS T2 (ms) P
NAA singlet 2CH3 369 ± 24 298 ± 20 <0.01
tCr singlet at 3.0 ppm N(CH3) 195 ± 6 175 ± 8 <0.01
tCr singlet at 3.9 ppm 2CH2 161 ± 6 128 ± 8 <0.01
tCho Entire molecule 387 ± 40 319 ± 20 0.04
Glu Entire molecule 170 ± 10 191 ± 23 0.10
mIns Entire molecule 194 ± 11 239 ± 27 0.06
NAA multiplet 3CH2 229 ± 16 287 ± 91 0.21
Water 79.0 ± 0.5 77.5 ± 1.2 0.01