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Titre : | Comparison of multifidus muscle intramuscular fat by ultrasound echo intensity and fat-water based MR images in individuals with chronic low back pain (2023) |
Auteurs : | Jenna Crook ; Sara Masi ; Neda Naghdi ; Alexa Roussac ; Meaghan Rye ; Brent Rosenstein ; Hassan Rivaz ; Mathieu Boily ; Michael H. Weber ; Maryse Fortin |
Type de document : | Article |
Dans : | Musculoskeletal Science and Practice (Vol. 63, February 2023) |
Article en page(s) : | 102717 |
Note générale : | https://doi.org/10.1016/j.msksp.2023.102717 |
Langues: | Anglais |
Descripteurs : |
HE Vinci Douleur chronique ; Graisse sous-cutanée ; Imagerie par résonance magnétique ; Lombalgie ; Muscles paravertébraux |
Résumé : | Purpose The aim of this observational cross-sectional study was to examine correlations of intramuscular fat content in lumbar multifidus (LM) by comparing muscle echo intensity (EI) and percent fat signal fraction (%FSF) generated from ultrasound (US) and magnetic resonance (MR) images, respectively. Methods MRI and US images from 25 participants (16 females, 9 males) selected from a cohort of patients with chronic low back pain (CLBP) were used. Images were acquired bilaterally, at the L4 and L5 levels (e.g., 4 sites). EI measurements were acquired by manually tracing the cross-sectional border of LM. Mean EI of three US images per site were analyzed (e.g., raw EI). A correction factor for subcutaneous fat thickness (SFT) was also calculated and applied (e.g., corrected EI). Corresponding fat and water MR images were used to acquire %FSF measurements. Intra-rater reliability was assessed by intraclass coefficients (ICC). Pearson correlations and simple linear regression were used to assess the relationship between %FSF, raw EI and corrected EI measurements. Results The intra-rater ICCs for all measurements were moderate to excellent. Correlations between %FSF vs. raw EI and corrected EI were moderate to strong (0.40 |
Disponible en ligne : | Oui |
En ligne : | https://login.ezproxy.vinci.be/login?url=https://www.sciencedirect.com/science/article/pii/S2468781223000024 |