PMC

Spectra obtained using SSRF with TE 144ms (a) and SLR with TE 35ms (b) at 1cc resolution and TR 2s. 8×8×8 with elliptical kspace sampling. Total time of 17.5min.

1cc 3D MRSI of the brain using SSRF with VSS at TE of 144ms. It demonstrates good quality spectra but variable linewidth due to residual Bo inhomogeneity.

0.35cc spectra with TE of 35ms and TR 2s. 8×8×8 phase encoding for a total acquisition time of 17.5min. The array (b) demonstrates the gray and white matter metabolite concentration differences, in which choline is higher In white matter.

(a) a partially adiabatic SSRF pulse for 7T acquisitions. Blue and green lines are the real and imaginary components, respectively. (b) simulated spectral vs spatial profile (180-degree flip angles) shows an absence of chemical shift mis-registration. (c) spatial profile for RF amplitude of +/-33% showing adiabatic behavior showing only slight changes in profile.