The 1H NMR spectrum of Glutamate (Glu) at 2.35 ppm is difficult to measure because it is strongly overlapped with glutamine (Gln) and N-acetyl-aspartate (NAA).

• 摘要:在氢原子核磁共振频谱里，量测脑部代谢物之中的谷氨酸盐是十分困难的，因为它的频谱位置与乙醯天门冬胺酸相当接近，加上乙醯天门冬胺酸的量大于谷氨酸盐很多，造成严重的重叠观察不易。