10.1371/journal.pone.0215210.g003 Ningzhi Li Ningzhi Li Linqing Li Linqing Li Yan Zhang Yan Zhang Maria Ferraris Araneta Maria Ferraris Araneta Christopher Johnson Christopher Johnson Jun Shen Jun Shen Typical raw in vivo spectra at different flip angles (FAs). Public Library of Science 2019 Monte Carlo simulations increase measurement precision Optimized four-flip angle measurements RF echo time-independent technique radio frequency pulse-driven relaxation MAR ZSS technique glutamatergic neurons matter-dominated medial prefrontal lobe intracellular environment scan time 2 x 2 x 2 cm 3 voxel glutamate T 2 2019-04-17 17:40:51 Figure https://plos.figshare.com/articles/figure/Typical_raw_in_vivo_spectra_at_different_flip_angles_FAs_/8008457 <p>Typical raw in vivo spectra acquired from the medial frontal lobe voxel of a healthy subject using the improved MARzss method at four different FAs.</p>