Goal: Skeletal muscle mechanics can be assessed in vivo using shear wave elastography. However, the impact of pennation angle on shear wave velocity (SWV) remains unclear. This study aims to quantify the effect by automatically aligning the ultrasound probe with muscle fiber orientation. Methods: We propose an automatic ultrasound probe alignment system and compare it to manual and no alignment. SWV of the gastrocnemius medialis muscle of ten volunteers was measured during rest and isometric contractions. Results: The SWV was different between the conditions (p = 0.008). The highest SWV was obtained during the automatic alignment and differences between the conditions were most pronounced during high-level contractions. The automatic system yielded more accurate alignment compared to a manual operator (p = 0.05). Conclusions: The present study indicates that pennation angle affects SWV, hence muscle fiber orientation must be considered to reliably interpret SWV. Using automatic alignment systems allows for more accurate alignment, improving the methodology of ultrasound elastography in skeletal muscles.
%0 Journal Article
%1 10336387
%A Zimmer, Manuela
%A Bunz, Elsa K.
%A Ehring, Tobias
%A Kaiser, Benedikt
%A Kienzlen, Annika
%A Schlüter, Henning
%A Zürn, Manuel
%D 2023
%J IEEE Open Journal of Engineering in Medicine and Biology
%K grk2198 isd myown
%P 259-267
%R 10.1109/OJEMB.2023.3338090
%T In Vivo Assessment of Shear Wave Propagation in Pennate Muscles Using an Automatic Ultrasound Probe Alignment System
%V 4
%X Goal: Skeletal muscle mechanics can be assessed in vivo using shear wave elastography. However, the impact of pennation angle on shear wave velocity (SWV) remains unclear. This study aims to quantify the effect by automatically aligning the ultrasound probe with muscle fiber orientation. Methods: We propose an automatic ultrasound probe alignment system and compare it to manual and no alignment. SWV of the gastrocnemius medialis muscle of ten volunteers was measured during rest and isometric contractions. Results: The SWV was different between the conditions (p = 0.008). The highest SWV was obtained during the automatic alignment and differences between the conditions were most pronounced during high-level contractions. The automatic system yielded more accurate alignment compared to a manual operator (p = 0.05). Conclusions: The present study indicates that pennation angle affects SWV, hence muscle fiber orientation must be considered to reliably interpret SWV. Using automatic alignment systems allows for more accurate alignment, improving the methodology of ultrasound elastography in skeletal muscles.
@article{10336387,
abstract = {Goal: Skeletal muscle mechanics can be assessed in vivo using shear wave elastography. However, the impact of pennation angle on shear wave velocity (SWV) remains unclear. This study aims to quantify the effect by automatically aligning the ultrasound probe with muscle fiber orientation. Methods: We propose an automatic ultrasound probe alignment system and compare it to manual and no alignment. SWV of the gastrocnemius medialis muscle of ten volunteers was measured during rest and isometric contractions. Results: The SWV was different between the conditions (p = 0.008). The highest SWV was obtained during the automatic alignment and differences between the conditions were most pronounced during high-level contractions. The automatic system yielded more accurate alignment compared to a manual operator (p = 0.05). Conclusions: The present study indicates that pennation angle affects SWV, hence muscle fiber orientation must be considered to reliably interpret SWV. Using automatic alignment systems allows for more accurate alignment, improving the methodology of ultrasound elastography in skeletal muscles.},
added-at = {2024-02-13T22:10:05.000+0100},
author = {Zimmer, Manuela and Bunz, Elsa K. and Ehring, Tobias and Kaiser, Benedikt and Kienzlen, Annika and Schlüter, Henning and Zürn, Manuel},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/28c62ce20149f7d4ea5af8aad7e3ed3b6/mazimmer},
doi = {10.1109/OJEMB.2023.3338090},
interhash = {b913dc0f7ca4be01869acf911b8dd1d4},
intrahash = {8c62ce20149f7d4ea5af8aad7e3ed3b6},
issn = {2644-1276},
journal = {IEEE Open Journal of Engineering in Medicine and Biology},
keywords = {grk2198 isd myown},
pages = {259-267},
timestamp = {2024-02-13T22:10:44.000+0100},
title = {In Vivo Assessment of Shear Wave Propagation in Pennate Muscles Using an Automatic Ultrasound Probe Alignment System},
volume = 4,
year = 2023
}
