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[Neuromechanical characterisation of muscles and their functional units using ultrasound imaging methods] State-of-the-art and future perspectives
Umeå University, Faculty of Medicine, Department of Radiation Sciences, Radiation Physics. Umeå University, Faculty of Medicine, Department of Diagnostics and Intervention. Umeå University, Faculty of Medicine, Department of Medical and Translational Biology.ORCID iD: 0000-0003-4328-5467
Lund University, Lund, Sweden.
Umeå University, Faculty of Medicine, Department of Diagnostics and Intervention.ORCID iD: 0000-0003-4288-1208
Imperial College London, UK.
2024 (English)In: ISEK XXIV Abstract book, 2024, article id S5.5Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Ultrasound imaging can be used to non-invasively assess muscle structure, musculoskeletal properties, and, more recently, neuromechanics in vivo. This technology can provide great spatial and temporal resolution, opening exciting avenues for investigating health, disease, and neural interfacing technology. This talk will build upon state-of-the-art ultrasound imaging technology and discuss future perspectives and translational capabilities of ultrasound imaging for the neuromechanical characterisation of muscle tissue.An ultrasound transducer on the skin parallel to the muscle fibres can be used to detect and analyse the muscle-tendon unit, muscle thickness, pennation angle, fascicle length, aponeuroses and muscle gearing. This is usually performed using a clinical ultrasound scanner with B-mode (grayscale) imaging, making it accessible to researchers, clinicians, etc. On the other hand, these scanners operate at relatively low frame rates and do not enable access to raw data to calculate displacement fields. These displacement fields are important for identifying transient events like the subtle displacements of muscle fibres in response to the neural discharges of a single motoneuron. Thus, for these applications, a programmable ultrasound research system is used. Moreover, the ultrasound transducer is usually placed perpendicular to the fibres to increase the identification yield.The above cannot all be done simultaneously due to probe positioning. However, it would enable the study of the musculoskeletal structure and properties along with the neuromechanical properties and motoneuron spike trains. Here, I will present the advancements in 3D imaging that could be applied and how they could further enable the study of dynamic contractions. For some translational activities, these systems and probes are too bulky, leading to the incentives for the rise of wearable systems. Finally, I will discuss the feasibility of studying neuromechanics and identifying neural spike trains using a clinical system through an innovative post- processing method. Such a method would increase the accessibility of neural information since a programmable ultrasound research system is currently needed.

Place, publisher, year, edition, pages
2024. article id S5.5
National Category
Physiology and Anatomy Medical Engineering
Identifiers
URN: urn:nbn:se:umu:diva-227808OAI: oai:DiVA.org:umu-227808DiVA, id: diva2:1883517
Conference
XXV ISEK Congress, International Society of Electrophysiology & Kinesiology, Nagoya, Japan, June 26-29, 2024
Funder
Swedish Research CouncilStiftelsen Längmanska kulturfondenSwedish National Centre for Research in SportsThe Swedish Brain FoundationThe Kempe FoundationsPromobilia foundation
Note

Part of: Symposium 5: Neuromechanical characterisation of muscles and their functional units using ultrasound imaging methods: State-of-the-art and future perspectives

Available from: 2024-07-10 Created: 2024-07-10 Last updated: 2025-02-10Bibliographically approved

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Rohlén, RobinGrönlund, Christer

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