RT Journal Article
SR Electronic
T1 Localized Proton MR Spectroscopy of the Allocortex and Isocortex in Healthy Children
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 1354
OP 1358
VO 21
IS 7
A1 Choi, Choong-Gon
A1 Ko, Tae-Sung
A1 Lee, Ho Kyu
A1 Lee, Jung Hee
A1 Suh, Dae Chul
YR 2000
UL http://www.ajnr.org/content/21/7/1354.abstract
AB BACKGROUND AND PURPOSE: The human allocortex is different from the isocortex in neuroglial cytoarchitecture. The purpose of this study was to compare metabolic data of the allocortex with those of the isocortex by using localized proton MR spectroscopy.METHODS: Short-TE stimulated-echo acquisition mode proton MR spectroscopy (TR/TE = 3000/30) was applied to the allocortex of the temporal lobe and isocortex of the parietal or frontal lobe in 30 healthy children (19 boys and 11 girls, 3–14 years old). Peak intensities of N-acetylaspartate (NAA), choline-containing compounds (Cho), and myo-inositol (mI) relative to creatine and phosphocreatine (Cr) were calculated. Metabolic data from the investigated regions were compared.RESULTS: NAA/Cr was significantly lower in the allocortex than in the isocortex of the parietal or frontal lobe: 1.05 ± 0.12 (n = 33) vs. 1.36 ± 0.10 (n = 28) or 1.32 ± 0.10 (n = 12), respectively. Cho/Cr and mI/Cr were significantly higher in the allocortex than in the isocortex: 0.84 ± 0.11 vs. 0.56 ± 0.06 or 0.75 ± 0.10; 0.78 ± 0.15 vs. 0.54 ± 0.08 or 0.66 ± 0.09, respectively. In the isocortex, NAA/Cr was not different but Cho/Cr and mI/Cr were significantly higher in the frontal cortex than in the parietal cortex.CONCLUSION: Clear metabolic differences were observed between the allocortex and isocortex.