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 electrically-stimulated 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.

Detection of Motor Endplates in Deep and Pennate Skeletal Muscles in-vivo using Ultrafast Ultrasound / Leitner C.; Vostrikov S.; Penasso H.; Hager P.A.; Cosscttini A.; Benini L.; Baumgartner C.. - ELETTRONICO. - 2020-:(2020), pp. 9251756.1-9251756.7. (Intervento presentato al convegno 2020 IEEE International Ultrasonics Symposium, IUS 2020 tenutosi a usa nel 2020) [10.1109/IUS46767.2020.9251756].

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

Benini L.;
2020

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 electrically-stimulated 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.
2020
IEEE International Ultrasonics Symposium, IUS
1
7
Detection of Motor Endplates in Deep and Pennate Skeletal Muscles in-vivo using Ultrafast Ultrasound / Leitner C.; Vostrikov S.; Penasso H.; Hager P.A.; Cosscttini A.; Benini L.; Baumgartner C.. - ELETTRONICO. - 2020-:(2020), pp. 9251756.1-9251756.7. (Intervento presentato al convegno 2020 IEEE International Ultrasonics Symposium, IUS 2020 tenutosi a usa nel 2020) [10.1109/IUS46767.2020.9251756].
Leitner C.; Vostrikov S.; Penasso H.; Hager P.A.; Cosscttini A.; Benini L.; Baumgartner C.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/795331
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