Assessment of contractile and noncontractile components in human skeletal muscle by magnetic resonance imaging.
Författare
Summary, in English
A magnetic resonance imaging (MRI) technique for the assessment of contractile and noncontractile components of human skeletal muscle is described, and the inter-rater and intra-rater test-retest reliability for repeated measurements from the same MR image are examined. Twenty cross-sectional MR images from the right lower leg were obtained from 30 healthy young men and women (mean age 24.1 years, SD 3.3). The anatomical cross-sectional area (aCSA; cm2), the cross-sectional area of noncontractile components (Noncon; cm2), the contractile cross-sectional area (cCSA = aCSA minus Noncon; cm2), and the relative amount of Noncon (%), of the ankle dorsiflexor muscle compartment were determined for each slice using a computer-based image analysis system. Reliability for repeated measurements of the slice with the largest aCSA for the 30 subjects was analyzed by two raters on two different occasions. Inter-rater reliability on both occasions, assessed by the intraclass correlation coefficient (ICC), was excellent for cCSA (ICC3.1 = 0.99) and Noncon (ICC(3.1)
Avdelning/ar
Publiceringsår
2002
Språk
Engelska
Sidor
251-258
Publikation/Tidskrift/Serie
Muscle and Nerve
Volym
25
Issue
2
Dokumenttyp
Artikel i tidskrift
Förlag
John Wiley & Sons Inc.
Ämne
- Physiotherapy
- Radiology, Nuclear Medicine and Medical Imaging
Nyckelord
- Magnetic Resonance Imaging
- Male
- Muscle Skeletal : anatomy & histology : physiology
- Observer Variation
- Support Non-U.S. Gov't
- Image Processing Computer-Assisted
- Ankle
- Female
- Human
- Adult
Status
Published
Forskningsgrupp
- Human Movement: health and rehabilitation
ISBN/ISSN/Övrigt
- ISSN: 0148-639X