DTI‐based fiber tracking reveals a heterogeneous alteration of pennation angle upon muscle lengthening
نویسندگان
چکیده
منابع مشابه
Muscle Pennation Measured with DT-MRI 1 Quantitative Diffusion Tensor MRI-Based Fiber Tracking of Human Skeletal Muscle
Diffusion-tensor MRI (DT-MRI) offers great potential for understanding structure-function relationships in human skeletal muscles. The purposes of this study were to demonstrate the feasibility of using in vivo human DT-MRI fiber tracking data for making pennation angle measurements and to test the hypothesis that heterogeneity in the orientation of the tibialis anterior (TA) muscle’s aponeuros...
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UNLABELLED Muscular architecture involves the organization of fibres in the muscle and is one of the most important factors of muscular function. Studies have demonstrated an association with muscular architecture and contraction, with an increase of the pennation angle in muscles. The aim of the study was to evaluate the change of muscular pennation angle after therapy with warm thermal water ...
متن کاملA three-dimensional approach to pennation angle estimation for human skeletal muscle.
Pennation angle (PA) is an important property of human skeletal muscle that plays a significant role in determining the force contribution of fascicles to skeletal movement. Two-dimensional (2D) ultrasonography is the most common approach to measure PA. However, in principle, it is challenging to infer knowledge of three-dimensional (3D) architecture from 2D assessment. Furthermore, architectur...
متن کاملAnisotropic Smoothing Improves DT-MRI-Based Muscle Fiber Tractography
PURPOSE To assess the effect of anisotropic smoothing on fiber tracking measures, including pennation angle, fiber tract length, and fiber tract number in the medial gastrocnemius (MG) muscle in healthy subjects using diffusion-weighted magnetic resonance imaging (DW-MRI). MATERIALS AND METHODS 3T DW-MRI data were used for muscle fiber tractography in the MG of healthy subjects. Anisotropic s...
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There are currently few studies in the literature concerning the reliability and validity of the quantification of parameters of muscle architecture using the technique of ultrasound. The aim of this study is to apply the technique of ultrasound imaging to quantify pennation angle of gastrocnemius muscle (medial and lateral) and to determine the reliability and reproducibility of these measures...
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ژورنال
عنوان ژورنال: The FASEB Journal
سال: 2007
ISSN: 0892-6638,1530-6860
DOI: 10.1096/fasebj.21.6.lb118-c