Distinguishing neuronal from astrocytic subcellular microstructures using in vivo Double Diffusion Encoded 1H MRS at 21.1 T
Fig 2
RF pulse shape used to selectively address mI and NAA (left) and its frequency spectrum (right).
The bandwidths of the 8 ms pulse are sufficiently narrow to efficiently convert all magnetization aligned initially along Mz into Mxy magnetization within the desired bands, but not elsewhere. This results in a cellular-specific mode of excitation.