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Abstract #1174

Reproducibility of morphological measurements and muscle DTI parameters in the masticatory system of healthy subjects.

Jose D Sergio Almeida 1 , Flora Grning 2 , and Jiabao He 1

1 Aberdeen Biomedical Imaging Centre, University of Aberdeen, Aberdeen, Scotland, United Kingdom, 2 Anatomy and Musculoskeletal Research Programme, University of Aberdeen, Aberdeen, Scotland, United Kingdom

Masticatory system is complex, attracting significant interest in understanding its function. However, current literature evidence has limited consistency, often attributed to multifactorial nature of masticatory dysfunction. It is therefore valuable to assess the reproducibility of bone and muscle morphological measurements and muscle DTI parameters, where signal level and spatial accuracy are competing factors. We found that bone morphological parameters are highly reproducible, while muscle volume reproducibility depends on the volume magnitude. For DTI parameters, only masseter measurements are reproducible. Our finding indicates that clinical studies of masticatory system should carefully consider power calculation to ensure the validity of the conclusion.

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