Journal
ULTRASOUND IN MEDICINE AND BIOLOGY
Volume 38, Issue 9, Pages 1656-1661Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ultrasmedbio.2012.04.018
Keywords
Panoramic ultrasound; Magnetic resonance imaging; Cross-sectional area; Muscle size
Funding
- Human Research Program of the National Aeronautics and Space Administration (NASA)
- Natural Sciences and Engineering Research Council of Canada Post Doctoral Fellowship
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This study examined the reliability and validity of using customized templates to acquire panoramic ultrasound (US) images for determining cross-sectional area (CSA) and volume in the vastus lateralis (VL), rectus femoris (RF), medial gastrocnemius (MG) and lateral gastrocnemius (LG). Panoramic US and magnetic resonance imaging (MRI) images were analyzed by two trained investigators. The inter-experimenter reliability (coefficient of variation [CV]) of panoramic US ranged from 2.4% to 4.1% and the intraclass correlation (ICC) ranged from 0.963 to 0.991, whereas the inter-experimenter CV of MRI ranged from 2.8% to 3.8% and the ICC from 0.946 to 0.986. Bland-Altman plots demonstrated high agreement between US and MRI; however, values obtained from MRI were systematically larger than those obtained from US. The present results indicate that using a customized US template provides reliable measures of leg muscle CSA and, thus, could be used to characterize muscle CSA and volume. (E-mail: jessica.m.scott@nasa.gov) (c) 2012 World Federation for Ultrasound in Medicine & Biology.
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