Figure 4.
Representative in vivo 31P-MT spectra simultaneously detected from the OL and FL from healthy human subjects. Top panels (A and C) show the respective 31P control spectra and 31P-MT spectra (with γ-ATP saturation pointed by the red arrows) acquired from the OL, while the bottom panels (B and D) show the control and 31P-MT spectra from the FL. Overall, the 31P MR spectra from the two brain regions show excellent spectral quality and adequate MT saturation efficiency in two representative subjects (TR = 3 s, 320 signal averages, 16 minutes of acquisition time per spectrum).