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Pennation angle dependency in skeletal muscle tissue doppler strain in dynamic contractions
Umeå universitet, Medicinska fakulteten, Institutionen för strålningsvetenskaper, Radiofysik.ORCID-id: 0000-0003-3363-7414
Umeå universitet, Medicinska fakulteten, Institutionen för strålningsvetenskaper, Radiofysik.ORCID-id: 0000-0003-0081-1156
Vise andre og tillknytning
2011 (engelsk)Inngår i: Ultrasound in Medicine and Biology, ISSN 0301-5629, E-ISSN 1879-291X, Vol. 37, nr 7, s. 1151-1160Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Tissue velocity imaging (TVI) is a Doppler based ultrasound technique that can be used to study regional deformation in skeletal muscle tissue. The aim of this study was to develop a biomechanical model to describe the TVI strain's dependency on the pennation angle. We demonstrate its impact as the subsequent strain measurement error using dynamic elbow contractions from the medial and the lateral part of biceps brachii at two different loadings; 5% and 25% of maximum voluntary contraction (MVC). The estimated pennation angles were on average about 4° in extended position and increased to a maximal of 13° in flexed elbow position. The corresponding relative angular error spread from around 7% up to around 40%. To accurately apply TVI on skeletal muscles, the error due to angle changes should be compensated for. As a suggestion, this could be done according to the presented model.

sted, utgiver, år, opplag, sider
2011. Vol. 37, nr 7, s. 1151-1160
Emneord [en]
Ultrasound, tissue doppler, skeletal muscle, pennation angle, strain, biceps brachii
Identifikatorer
URN: urn:nbn:se:umu:diva-45851DOI: 10.1016/j.ultrasmedbio.2011.04.006PubMedID: 21640478OAI: oai:DiVA.org:umu-45851DiVA, id: diva2:435476
Tilgjengelig fra: 2011-08-18 Laget: 2011-08-18 Sist oppdatert: 2018-06-08bibliografisk kontrollert

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