Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/5735
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dc.contributorDepartment of Biomedical Engineering-
dc.creatorZhou, Y-
dc.creatorLi, JZ-
dc.creatorZhou, G-
dc.creatorZheng, YP-
dc.date.accessioned2014-12-11T08:23:46Z-
dc.date.available2014-12-11T08:23:46Z-
dc.identifier.issn1475-925X-
dc.identifier.urihttp://hdl.handle.net/10397/5735-
dc.language.isoenen_US
dc.publisherBioMed Central Ltd.en_US
dc.rights© 2012 Zhou et al.; licensee BioMed Central Ltd.en_US
dc.rightsThis is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.en_US
dc.subjectUltrasound imageen_US
dc.subjectPennation angleen_US
dc.subjectHough transformen_US
dc.subjectSonomyographyen_US
dc.subjectSMGen_US
dc.subjectElectromyographyen_US
dc.subjectEMGen_US
dc.subjectGastrocnemius muscleen_US
dc.subjectOrientationen_US
dc.titleDynamic measurement of pennation angle of gastrocnemius muscles during contractions based on ultrasound imagingen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.volume11-
dc.identifier.doi10.1186/1475-925X-11-63-
dcterms.abstractBackground: Muscle fascicle pennation angle (PA) is an important parameter related to musculoskeletal functions, and ultrasound imaging has been widely used for measuring PA, but manually and frame by frame in most cases. We have earlier reported an automatic method to estimate aponeurosis orientation based on Gabor transform and Revoting Hough Transform (RVHT).-
dcterms.abstractMethods: In this paper, we proposed a method to estimate the overall orientation of muscle fascicles in a region of interest, in order to complete computing the orientation of the other side of the pennation angle, but the side found by RVHT. The measurements for orientations of both fascicles and aponeurosis were conducted in each frame of ultrasound images, and then the dynamic change of pennation angle during muscle contraction was obtained automatically. The method for fascicle orientation estimation was evaluated using synthetic images with different noise levels and later on 500 ultrasound images of human gastrocnemius muscles during isometric plantarflexion.-
dcterms.abstractResults: The muscle fascicle orientations were also estimated manually by two operators. From the results it’s found that the proposed automatic method demonstrated a comparable performance to the manual method.-
dcterms.abstractConclusions: With the proposed methods, ultrasound measurement for muscle pennation angles can be more widely used for functional assessment of muscles.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationBioMedical engineering online 2012, 11:63-
dcterms.isPartOfBioMedical Engineering OnLine-
dcterms.issued2012-09-03-
dc.identifier.isiWOS:000309401900001-
dc.identifier.scopus2-s2.0-84865600365-
dc.identifier.pmid22943184-
dc.identifier.rosgroupidr66899-
dc.description.ros2012-2013 > Academic research: refereed > Publication in refereed journal-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublisheden_US
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