B-Mode Ultrasonography Is a Reliable and Valid Alternative to Magnetic Resonance Imaging for Measuring Patellar Tendon Cross-Sectional Area

Marshall, Steven J., Hicks, Kirsty, Howatson, Glyn, Cox, Lisa and Thomas, Kevin (2022) B-Mode Ultrasonography Is a Reliable and Valid Alternative to Magnetic Resonance Imaging for Measuring Patellar Tendon Cross-Sectional Area. Ultrasound in Medicine & Biology. pp. 1-10. ISSN 0301-5629 (In Press)

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Official URL: https://doi.org/10.1016/j.ultrasmedbio.2022.10.011


This study investigated the validity and reliability of measuring patellar tendon (PT) cross-sectional area (CSA) using magnetic resonance imaging (MRI) and ultrasound (US) imaging. Nineteen healthy participants (10 women, 9 men) participated in three imaging sessions of the PT, once via MRI and twice via US, with image acquisition conducted by two raters, one experienced (rater 2) and one inexperienced (rater 1). All PT segmentations were analyzed by both raters. The validity of US-derived estimates of PT CSA against MRI estimates was analyzed using linear regression. Within-day reliability of US and MRI measurements and between-day reliability of US measurements were quantified using typical error (TE) and intra-class correlation coefficients (ICC3,1). There was good agreement between US- and MRI-derived estimations of PT CSA (standard errors of the estimate of 3.3 mm2 for rater 1 and 2.6 mm2 for rater 2; Pearson's r = 0.97 and 0.98 for raters 1 and 2, respectively). Within-session reliability for estimations of total PT CSA from US and MRI were excellent (ICC3,1 >0.95, coefficient of variation [CV] <4.1%, TE = 1.3–3.6 mm2. Between-day reliability for US was excellent (ICC3,1 >0.97, CV <2.7%, TE = 1.6–2.3 mm2), with little difference between raters. These findings suggest that MRI and US both provide reliable estimates of PT CSA and that US can provide a valid measure of PT CSA.

Item Type: Article
Additional Information: Funding information: The work was funded by the collaborative doctoral scheme between Northumbria University, UK, and the Talented Athlete Scholarships Scheme (TASS), UK, and by the Research Development Fund (RDF) Studentship Scheme. The magnetic resonance imaging costs were met by Newcastle Clinic, Newcastle, UK.
Uncontrolled Keywords: Reproducibility, Inter-rater, Intra-rater, Tendon morphology, Repeatability, Imaging, Magnetic resonance imaging.
Subjects: C600 Sports Science
Department: Faculties > Health and Life Sciences > Sport, Exercise and Rehabilitation
Depositing User: Elena Carlaw
Date Deposited: 21 Dec 2022 14:46
Last Modified: 21 Dec 2022 15:00
URI: https://nrl.northumbria.ac.uk/id/eprint/50979

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