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Abstract #1828

Non-Water-Suppressed Semi-LASER Localization for MR Spectroscopy of the Human Skeletal Muscle at 3T

Manoj K Sarma1,2, Mahrshi Jani1, Yeison Rodriguez1, Bei Zhang1,2, and Anke Henning1,2
1Advanced Imaging Research Center, UT Southwestern Medical Center, Dallas, TX, United States, 2Radiology, UT Southwestern Medical Center, Dallas, TX, United States

Synopsis

Keywords: Spectroscopy, Spectroscopy, Skeletal muscle, SVS, pulse sequence

Motivation: Due to the dependence on the type and orientation of the skeletal muscle, it is a challenge to perform 1H MRS to characterize the muscle features in this highly organized structure.

Goal(s): The aim of this work was to implement a non-water-suppressed semi-LASER (sLASER) sequence to characterize up- and downfield metabolites in human skeletal muscle in vivo at 3T.

Approach: This was achieved through optimizing the crusher scheme and phase cycling schemes in sLASER and combining it with metabolite cycled.

Results: High quality spectra were obtained from different muscle fibers of 8 healthy volunteers to characterize both up- and downfield metabolites.

Impact: We demonstrated the application of metabolite-cycled semi-LASER spectroscopy in human skeletal muscles at 3T. Up- and downfield parts of the spectrum were detected with high quality enabling the detection of important metabolites including carnosine providing unique insight into human physiology.

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Keywords