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A Magnetic Resonance Compatible Knee Extension Ergometer

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dc.contributor.advisorFrank C Sup
dc.contributor.advisorJane A Kent
dc.contributor.advisorJames R Rinderle
dc.contributor.authorJaber, Youssef
dc.contributor.departmentUniversity of Massachusetts Amherst
dc.contributor.departmentMechanical Engineering
dc.date2024-03-28T19:45:32.000
dc.date.accessioned2024-04-26T18:21:39Z
dc.date.available2024-04-26T18:21:39Z
dc.date.submittedMay
dc.date.submitted2017
dc.description.abstractThe product of this thesis aims to enable the study of the biochemical and physical dynamics of the lower limbs at high levels of muscle tension and fast contraction speeds. This is accomplished in part by a magnetic resonance (MR) compatible ergometer designed to apply a load as a torque of up to 420 Nm acting against knee extension at speeds as high as 4.7 rad/s. The system can also be adapted to apply the load as a force of up to 1200 N acting against full leg extension. The ergometer is designed to enable the use of magnetic resonance spectroscopy and imaging in a three Tesla Siemens Skyra MRI system. Due to the electromagnetic limitations of having the device operate inside the magnet, the design is split into two components. One designed to fit inside the 70 cm bore of the scanner. This component is electromagnetically passive; made out of materials exhibiting minimal magnetic interference, and having no electrically powered parts. The other component is electromagnetically active; it contains all of the powered elements and actuates the passive part from another room. A tensioned cable transmits power through a waveguide; a pipe through the wall of the MRI room with an RF shield. The device was tested applying a sagittal plane moment on the knee joint during isometric, isokinetic, isotonic, and constant power contractions.
dc.description.degreeMaster of Science (M.S.)
dc.identifier.doihttps://doi.org/10.7275/9982601
dc.identifier.orcidN/A
dc.identifier.urihttps://hdl.handle.net/20.500.14394/33529
dc.relation.urlhttps://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1524&context=masters_theses_2&unstamped=1
dc.source.statuspublished
dc.subjectErgometer
dc.subjectMRI
dc.subjectMagnetic
dc.subjectIsotonic
dc.subjectIsokinetic
dc.subjectDesign
dc.subjectBiomechanical Engineering
dc.subjectBiomechanics
dc.subjectBiomedical
dc.subjectBiomedical Devices and Instrumentation
dc.subjectControls and Control Theory
dc.subjectElectro-Mechanical Systems
dc.titleA Magnetic Resonance Compatible Knee Extension Ergometer
dc.typeopenaccess
dc.typearticle
dc.typethesis
digcom.contributor.authorisAuthorOfPublication|email:yjaber@umass.edu|institution:University of Massachusetts Amherst|Jaber, Youssef
digcom.identifiermasters_theses_2/507
digcom.identifier.contextkey9982601
digcom.identifier.submissionpathmasters_theses_2/507
dspace.entity.typePublication
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