Ultrasound imaging of quadriceps muscle in patients with knee osteoarthritis: The test-retest and inter-rater reliability and concurrent validity of echo intensity measurement


KARAPINAR M. , AYYILDIZ V. A. , Unal M. , FIRAT T.

MUSCULOSKELETAL SCIENCE AND PRACTICE, vol.56, 2021 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 56
  • Publication Date: 2021
  • Doi Number: 10.1016/j.msksp.2021.102453
  • Title of Journal : MUSCULOSKELETAL SCIENCE AND PRACTICE
  • Keywords: Ultrasound imaging, Reliability, Echo intensity, Knee osteoarthritis, FEMORIS MUSCLE, ADIPOSE-TISSUE, QUALITY, ULTRASONOGRAPHY, AGREEMENT, QUANTITY, YOUNG

Abstract

Background: Echo intensity(EI) on ultrasonography images of skeletal muscle reflects muscle composition. Objectives: The primary aim of the study was to investigate the inter-rater and test-retest reliability of EI using grayscale histogram analysis of the cross-sectional area of quadriceps femoris(QF) muscle in patients with knee osteoarthritis(KOA). The secondary aim of the study was to determine the concurrent validity of the Free Hand Tool(FHT) when compared to Rectangular Marquee Tool(RMT) for calculating the region of interest(ROI) in ImageJ.