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FIG 3. Initial and follow-up brain proton MRS studies in a neonate with mild HIE performed at 3 and 13 days of age, respectively. The peaks of NAA, Cho, (Cr + PCr), and M-Ino are clearly visible in all the MRS studies.
A, Initial PRESS proton MRS study (2000/135/250) shows a barely visible peak of 
-Glx at 3.75 ppm.
B, Initial STEAM proton MRS study (2000/24/250) shows the apparent peak of -Glx at 3.75 ppm.
C, Follow-up PRESS proton MRS study (2000/135/250) shows no apparent changes as compared with the initial PRESS proton MRS study.
D, Follow-up STEAM proton MRS study (2000/24/250) shows the decrease in the heights of the peaks of -Glx at 3.75 ppm and M-Ino at 3.5 ppm as compared with those on the initial STEAM proton MRS. There are no apparent changes in the heights of the other peaks. For abbreviations, see figure 1.
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