Detection of Motor Endplates in Deep and Pennate Skeletal Muscles in-vivo using Ultrafast Ultrasound

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

*Corresponding author for this work

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

Abstract

Until now direct localization of motor endplates for any arbitrary muscle structure was reserved to cadaver studies or restricted to specific muscles in-vivo. Utilizing ultrafast ultrasound we report a versatile in-vivo method for
the detection of motor endplate zones. To achieve this goal, we employ a research ultrasound system with a linear array transducer probe to record ultrasound images of electricallystimulated medial gastrocnemius muscles. An optical flow speckle tracking algorithm is used to track the points along a single
fascicle. We localize motor endplates at intersection points where mechanical contraction waves diverge bidirectionally towards the fiber ends. Contrary to common experimental methods, our proposed ultrafast ultrasound-based approach allows to localize motor endplates also in deep and pennate muscles in-vivo. These results open up new applications for ultrasound in neuromuscular
research.
Original languageEnglish
Title of host publicationProceedings of the 2020 IEEE International Ultrasonics Symposium (IUS)
Place of PublicationLas Vegas, USA
PublisherIEEE Xplore
Publication statusPublished - Sep 2020
EventIEEE International Ultrasonics Symposium 2020 - Las Vegas, United States
Duration: 6 Sep 202011 Sep 2020

Conference

ConferenceIEEE International Ultrasonics Symposium 2020
Abbreviated titleIEEE IUS 2020
CountryUnited States
CityLas Vegas
Period6/09/2011/09/20

Fields of Expertise

  • Human- & Biotechnology

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  • Cite this

    Leitner, C., Vostrikov, S., Penasso, H., Hager, P. A., Cossettini, A., Benini, L., & Baumgartner, C. (2020). Detection of Motor Endplates in Deep and Pennate Skeletal Muscles in-vivo using Ultrafast Ultrasound. In Proceedings of the 2020 IEEE International Ultrasonics Symposium (IUS) Las Vegas, USA: IEEE Xplore.