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Skeletal muscle analysis of panoramic ultrasound is reliable across multiple raters

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  • Christopher J Cleary
  • Omid Nabavizadeh
  • Kaycie L Young
  • Ashley A Herda

Abstract

Ultrasound devices are common in muscle physiology laboratories due to their ease of use and validity to assess skeletal muscle characteristics. The current study assessed the reliability of ultrasound skeletal muscle image analysis across multiple raters with limited experience. Vastus lateralis (VL), rectus femoris (RF), and first dorsal interosseus (FDI) images were separately analyzed by three novice raters to determine muscle thickness (MT), cross-sectional area (CSA), and echo-intensity (EI). Separate analyses of variance (ANOVA) assessed statistical differences between and within raters. Intra-class correlation coefficients (ICC) between (inter-rater) and within (intra-rater) raters, the standard error of the measurement (SEM) and minimal difference needed to be considered real were calculated. Inter-rater reliability was high for the VL and RF (ICC: 0.984–0.999), while the FDI was lower (0.614–0.962). Further, intra-rater reliability was greater than 0.961 for each rater. SEM values calculated for inter-rater reliability expressed as a percentage of the mean ranged from 0.4–5.8% across variables. Similarly, SEM values for intra-rater reliability were between 0.8–5.8%, 0.6–3.6%, and 0.4–3.2% for Raters 1, 2 and 3, respectively. Despite this, significant differences (p

Suggested Citation

  • Christopher J Cleary & Omid Nabavizadeh & Kaycie L Young & Ashley A Herda, 2022. "Skeletal muscle analysis of panoramic ultrasound is reliable across multiple raters," PLOS ONE, Public Library of Science, vol. 17(5), pages 1-12, May.
    • Handle: RePEc:plo:pone00:0267641
    DOI: 10.1371/journal.pone.0267641
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    1. David Liljequist & Britt Elfving & Kirsti Skavberg Roaldsen, 2019. "Intraclass correlation – A discussion and demonstration of basic features," PLOS ONE, Public Library of Science, vol. 14(7), pages 1-35, July.
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