Human Fascicle Strain Behavior During Twitch using Ultrafast Ultrasound

Christoph Leitner*, Sergei Vostrikov, Markus Tilp, Pascal A. Hager, Andrea Cossettini, Luca Benini, Christian Baumgartner

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference paperpeer-review


There is recent experimental evidence that sarcomere strain behavior is highly heterogeneous across and between muscle structures. Hence, considering the hierarchical architecture of muscles, also the behavior of all acting muscle substructures is effected. However, typical investigations are limited to ex-vivo experiments or pose serious limitations for invivo studies. In this work, we investigate in-vivo length changes in human muscle fascicles by means of non-invasive ultrafast ultrasound. To this end, we employ a research ultrasound system and a linear array transducer to image, in plane-wave mode, medial gastrocnemius muscles during electrically-stimulated contractions. The ultrasound-based approach presented in this study allows to measure strain distributions within muscle fascicles during contractions, where the sub-fascicle structures exhibit heterogeneous behaviors.
Original languageEnglish
Title of host publicationIUS 2020 - International Ultrasonics Symposium, Proceedings
Place of PublicationLas Vegas, USA
PublisherIEEE Xplore
ISBN (Electronic)9781728154480
Publication statusPublished - 7 Sept 2020
EventIEEE International Ultrasonics Symposium 2020 - Las Vegas, United States
Duration: 6 Sept 202011 Sept 2020

Publication series

NameIEEE International Ultrasonics Symposium, IUS
ISSN (Print)1948-5719
ISSN (Electronic)1948-5727


ConferenceIEEE International Ultrasonics Symposium 2020
Abbreviated titleIEEE IUS 2020
Country/TerritoryUnited States
CityLas Vegas


  • High frame rate
  • In-vivo
  • Length change
  • Muscle contraction
  • Muscle fascicle
  • Pennate muscle
  • Ultrasonic

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Fields of Expertise

  • Human- & Biotechnology


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