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Assessment of contractile and noncontractile components in human skeletal muscle by magnetic resonance imaging.

Drake, Anna Maria LU ; Askaner, Krister; Holtås, Stig LU ; Downham, David and Lexell, Jan LU (2002) In Muscle and Nerve 25(2). p.251-258
Abstract
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... (More)
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) (Less)
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organization
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Contribution to journal
publication status
published
subject
keywords
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
in
Muscle and Nerve
volume
25
issue
2
pages
251 - 258
publisher
John Wiley & Sons
external identifiers
  • wos:000173605900015
  • scopus:0036159048
ISSN
0148-639X
DOI
10.1002/mus.10031
language
English
LU publication?
yes
id
94b7e032-a501-4b76-b7b4-9a3719d03806 (old id 106668)
date added to LUP
2007-07-24 10:00:10
date last changed
2017-02-26 03:27:53
@article{94b7e032-a501-4b76-b7b4-9a3719d03806,
  abstract     = {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)},
  author       = {Drake, Anna Maria and Askaner, Krister and Holtås, Stig and Downham, David and Lexell, Jan},
  issn         = {0148-639X},
  keyword      = {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},
  language     = {eng},
  number       = {2},
  pages        = {251--258},
  publisher    = {John Wiley & Sons},
  series       = {Muscle and Nerve},
  title        = {Assessment of contractile and noncontractile components in human skeletal muscle by magnetic resonance imaging.},
  url          = {http://dx.doi.org/10.1002/mus.10031},
  volume       = {25},
  year         = {2002},
}