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Abstract #1537

Reproducibility of in vivo measurements of carnosine in muscles with 1H-MR spectroscopy

Maik Rothe1,2, Walter Alexander Wohlgemuth1,2, and Alexander Gussew1,2
1Medical Physics Group, University Clinic and Outpatient Clinic for Radiology, University Hospital Halle (Saale), Halle (Saale), Germany, 2Halle MR Imaging Core Facility, Medical Faculty, Martin-Luther-University Halle-Wittenberg, Halle (Saale), Germany

Synopsis

Keywords: Muscle, Spectroscopy

Motivation: Due to its pH-buffering function in skeletal muscle, carnosine reveals muscle fibre specific concentrations and is therefore suitable as a marker for the evaluation of muscle fibre composition in pathologies.

Goal(s): This study examines the reproducibility of muscle carnosine quantitation with 1H-MRS, and is further targeting to adjust scan parameters for future clinical studies.

Approach: 1H-MRS was applied in healthy volunteers to evaluate carnosine lateralization in leg muscles as well as quantitation reproducibility and precision in various parameter settings.

Results: Muscular carnosine can be measured with a sufficient precision and reproducibility in less than four minutes and in small voxels.

Impact: 1H-MRS enables reliable in vivo measurements of carnosine in skeletal muscles in clinical protocol settings, which is important for the assessment of disease- and age-related as well as myodegenerative changes in muscle fibre composition.

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