Abstract #3323

Localized in Vivo 13C MRS of Brain Glycogen at 9.4 and 14.1 T: A Comparison

Ruud B. van Heeswijk¹, Yves Pilloud¹, Florence D. Morgenthaler¹, Rolf Gruetter^1,2

¹Laboratory for Functional and Metabolic Imaging (LIFMET), Ecole Polytechnique Fdrale de Lausanne (EPFL), Lausanne, VD, Switzerland; ²Radiology, Universities of Lausanne & Geneva, Lausanne & Geneva, Switzerland

Localized ¹³C MR spectroscopy of rat brain glycogen at 9.4 and 14.1 T are compared. After pre-labeling at the C1 position and absolute quantification of the concentrations, the signal-to-noise ratio (SNR) of the glycogen and glucose C1 resonances are compared at the two field strengths. The T₁ relaxation time and effective linewidth are also determined, and an overall comparison of the spectral quality is made.