A total of 171 spectra obtained from three different brain regions from 81 infants are included in the analyses.

a Gestational age (in weeks) at birth (mean±SD (range)),b post-conceptional age (in weeks) at the time of the MR examination (mean±SD (range)).a 出生时的胎龄（Gestational age，单位：周），均值±标准差（范围）；b 磁共振（MR）检查时的受孕后龄（post-conceptional age，单位：周），均值±标准差（范围）。