High resolution ultrasound imaging of skeletal muscle dynamics and effects of fatigue

R. S. Witte, D. E. Dow, R. Olafsson, Y. Shi, M. O'Donnell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Scopus citations

Abstract

A real-time high-frequency ultrasound acquisition system was used to describe coordination of individual muscle fibers during an isometric contraction. Effects of contraction size and muscle fatigue on axial strain and strain rate were examined in isolated leg muscles from a rat and mouse. Strain was estimated with a phase-sensitive speckle-tracking algorithm, capable of detecting displacements less than 100 nm. The spatial distribution of axial strain was not uniform and ranged from 0.5% - 5% during twitch stimulation. Also, strain and strain rate paralleled contraction size and degree of muscle fatigue. This potentially noninvasive technique may be appropriate to assess severity of movement disorders, such as cerebral palsy, and track coordination during therapy and rehabilitation after muscle injury.

Original languageEnglish (US)
Title of host publicationProceedings - 2004 IEEE Ultrasonics Symposium
Subtitle of host publicationA Conference of the IEEE International Ultrasonics, Ferroelectrics, and Frequency Control Society, UFFC-S
EditorsM.P. Yuhas
Pages764-767
Number of pages4
DOIs
StatePublished - Dec 1 2004
Externally publishedYes
Event2004 IEEE Ultrasonics Symposium - Montreal, Que., Canada
Duration: Aug 23 2004Aug 27 2004

Publication series

NameProceedings - IEEE Ultrasonics Symposium
Volume1
ISSN (Print)1051-0117

Other

Other2004 IEEE Ultrasonics Symposium
CountryCanada
CityMontreal, Que.
Period8/23/048/27/04

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ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Cite this

Witte, R. S., Dow, D. E., Olafsson, R., Shi, Y., & O'Donnell, M. (2004). High resolution ultrasound imaging of skeletal muscle dynamics and effects of fatigue. In M. P. Yuhas (Ed.), Proceedings - 2004 IEEE Ultrasonics Symposium: A Conference of the IEEE International Ultrasonics, Ferroelectrics, and Frequency Control Society, UFFC-S (pp. 764-767). [U2-G-5] (Proceedings - IEEE Ultrasonics Symposium; Vol. 1). https://doi.org/10.1109/ULTSYM.2004.1417834