https://puma.ub.uni-stuttgart.de/group/simtech/processing%20SiebertPUMA RSS feed for /group/simtech/processing%20Siebert2026-04-23T04:06:22+02:00https://puma.ub.uni-stuttgart.de/bibtex/2d627d1373c83b8831d4db9c14e3feadb/inspo5inspo52024-04-02T12:17:45+02:00Image Skeletal ultrasound 3D Inspo PN2-8 Pennation muscle angle processing Siebert architecture <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Annika S. Sahrmann" itemprop="url" href="/person/198fb95294493de86e2fff35735a2a27a/author/0"><span itemprop="name">A. Sahrmann</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Lukas Vosse" itemprop="url" href="/person/198fb95294493de86e2fff35735a2a27a/author/1"><span itemprop="name">L. Vosse</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Tobias Siebert" itemprop="url" href="/person/198fb95294493de86e2fff35735a2a27a/author/2"><span itemprop="name">T. Siebert</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Geoffrey G. Handsfield" itemprop="url" href="/person/198fb95294493de86e2fff35735a2a27a/author/3"><span itemprop="name">G. Handsfield</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Oliver Röhrle" itemprop="url" href="/person/198fb95294493de86e2fff35735a2a27a/author/4"><span itemprop="name">O. Röhrle</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">Biomechanics and Modeling in Mechanobiology</span>, </em> </span>(<em><span>Mar 26, 2024<meta content="Mar 26, 2024" itemprop="datePublished"/></span></em>)</span>Tue Apr 02 12:17:45 CEST 2024Biomechanics and Modeling in Mechanobiology033D ultrasound-based determination of skeletal muscle fascicle orientations2024Image Skeletal ultrasound 3D Inspo PN2-8 Pennation muscle angle processing Siebert architecture 26Architectural parameters of skeletal muscle such as pennation angle provide valuable information on muscle function, since they can be related to the muscle force generating capacity, fiber packing, and contraction velocity. In this paper, we introduce a 3D ultrasound-based workflow for determining 3D fascicle orientations of skeletal muscles. We used a custom-designed automated motor driven 3D ultrasound scanning system for obtaining 3D ultrasound images. From these, we applied a custom-developed multiscale-vessel enhancement filter-based fascicle detection algorithm and determined muscle volume and pennation angle. We conducted trials on a phantom and on the human tibialis anterior (TA) muscle of 10 healthy subjects in plantarflexion (157 {\textpm} 7{\$}{\$}^{\backslash}circ{\$}{\$}), neutral position (109 {\textpm} 7{\$}{\$}^{\backslash}circ{\$}{\$}, corresponding to neutral standing), and one resting position in between (145 {\textpm} 6{\$}{\$}^{\backslash}circ{\$}{\$}). The results of the phantom trials showed a high accuracy with a mean absolute error of 0.92 {\textpm} 0.59{\$}{\$}^{\backslash}circ{\$}{\$}. TA pennation angles were significantly different between all positions for the deep muscle compartment; for the superficial compartment, angles are significantly increased for neutral position compared to plantarflexion and resting position. Pennation angles were also significantly different between superficial and deep compartment. The results of constant muscle volumes across the 3 ankle joint angles indicate the suitability of the method for capturing 3D muscle geometry. Absolute pennation angles in our study were slightly lower than recent literature. Decreased pennation angles during plantarflexion are consistent with previous studies. The presented method demonstrates the possibility of determining 3D fascicle orientations of the TA muscle in vivo.