Abstract #3222
             Direct validation of in vivo localized 13C MRS measurements of [1-13C] glycogen in rat brain
             Lei H,  Gruetter R,  Morgenthaler F,  Yue T
             EPFL,  University of Minnesota
             In vivo 13C MRS is to date the only non-invasive method to assess brain glycogen metabolism under physiological condition. The present study validated in vivo 13C MRS measurement of brain glycogen over a wide concentration range within 20%, when comparing with biochemical determined 13C labeled glycogen.