<p> An accurate estimation of Body Segment Parameters (BSPs) is needed to
understand human movement. These include segment mass, centre of mass, and moment
of inertia about the centre of mass. Bone density scanners, such as DPX, can measure
BSPs, but are limited to only two dimensions. MRI produces images in three
dimensions, but cannot directly measure mass. For this study, MRI was used in
conjunction with a DPX scan of the human body. The result was the development of a
method to estimate mass, and subsequently, centre of mass, and moment of inertia from
MRI images. Next, ellipses were created from the dimensions of transverse plane slices
(produced from MRI). Three different density profiles were applied to the ellipses, and
mass, centre of mass and moment of inertia about the centre of mass of each slice was
calculated. It was found that constant density transverse plane ellipses could be used to
estimate BSPs for most regions of the body. Photogrammetry can also be used to
generate the dimensions of ellipses that represent transverse plane slices. Therefore, the
suitability of photogrammetry to estimate slice BSPs was tested. It was found that
depending on the density profile used, photogrammetry is an effective method for
estimating BSPs. An exception to this estimation was in the chest, where ellipses may
not be representative of the body. </p> / Thesis / Master of Science (MSc)
| Identifer | oai:union.ndltd.org:mcmaster.ca/oai:macsphere.mcmaster.ca:11375/22531 |
| Date | 03 1900 |
| Creators | Mercuri, Mat |
| Contributors | Dowling, J. J., Human Biodynamics |
| Source Sets | McMaster University |
| Language | English |
| Detected Language | English |
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