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- Title
Estimating 3D supraspinatus intramuscular fatty infiltration in older adults: a pilot study.
- Authors
Addona, Jacqueline; Ahmed, Sagheer R; Almardawi, Ranyah; Garcia Zapata, Leopoldo; Awan, Omer A; Davis, Derik L
- Abstract
Background: A recent report suggests that semi-quantitative two-dimensional Goutallier grade (2D-GG) correlates poorly with quantitative three-dimensional Dixon fat fraction (3D-Dixon-FF) on magnetic resonance imaging (MRI). Purpose: To determine whether the finding of poor correlation of supraspinatus 3D-Dixon-FF with 2D-GG is reproducible, and to determine the strength of the correlation of 3D-Dixon-FF with quantitative 2D Dixon fat fraction (2D-Dixon-FF). Material and Methods: Ten adults aged ≥60 years were recruited prospectively received shoulder MRI. 2D-Dixon-FF and 3D-Dixon-FF were measured on 6-point Dixon fat fraction maps. 2D-GG was rated on T1-weighted images. Results: The mean age of participants was 70.7 ± 3.7 years. The mean 3D-Dixon-FF was 8.3% ± 5.7%; the mean 2D-Dixon-FF was 7.3% ± 4.4%; and the mean 2D-GG was 0.9 ± 0.7. There was a strong correlation for 3D-Dixon-FF with 2D-Dixon-FF (rho = 0.90; P < 0.001) and with 2D-GG (rho = 0.73; P = 0.017). Excellent inter-observer reliability was found for Dixon fat fraction (intraclass correlation coefficient = 0.946), which was good for Goutallier grade (weighted kappa = 0.634). Conclusion: Supraspinatus 3D-Dixon-FF had a strong correlation with 2D-Dixon-FF and 2D-GG in our study population.
- Subjects
OLDER people; SUPRASPINATUS muscles; MAGNETIC resonance imaging; INTRACLASS correlation; PILOT projects
- Publication
Acta Radiologica, 2023, Vol 64, Issue 5, p1880
- ISSN
0284-1851
- Publication type
Article
- DOI
10.1177/02841851221139597