The 1H MRS change in the trans occipital gray matter of AD is a decrease in NAA and NAA/Cr, NAA/(Cr+Cho) ratios, which seem to be able used for the diagnosis of AD.

• AD患者跨枕叶皮质区 1H MRS的改变主要为NAA以及NAA/Cr和NAA/(Cr +Cho)的下降 ,对AD的诊断有一定参考作用。