Detection of Motor Endplates in Deep and Pennate Skeletal Muscles in-vivo using Ultrafast Ultrasound
- Conference Paper
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. Show more
Book title2020 IEEE International Ultrasonics Symposium (IUS)
Pages / Article No.
SubjectIn-vivo; Motor neuron; Motor endplate band; Muscle contraction; Muscle fascicle; Pennate muscle; High frame rate; Ultrasonic
Organisational unit03996 - Benini, Luca / Benini, Luca
NotesDue to the Coronavirus (COVID-19) the conference was conducted virtually.
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