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dc.contributor.advisorMcCane, Brendan
dc.contributor.advisorWyvill, Geoff
dc.contributor.authorBennani, Hamza
dc.date.available2017-10-25T03:18:15Z
dc.date.copyright2017
dc.identifier.citationBennani, H. (2017). Three Dimensional Reconstruction of Human Lumbar Spine from Bi-planar Radiographs (Thesis, Doctor of Philosophy). University of Otago. Retrieved from http://hdl.handle.net/10523/7631en
dc.identifier.urihttp://hdl.handle.net/10523/7631
dc.description.abstractThis thesis investigates an accurate method for three dimensional (3D) reconstruction of the human spine from bi-planar radiographs with comparable results to CT scans or MRI. In this work, we generated a publicly available dataset which corresponds to the training data used. We subsequently solved the problem of correspondences using a landmark-free algorithm applied on the vertebrae. Finally, we developed a semi automatic method based on simulated radiographs for the reconstruction of the human lumbar spine in 3D from bi-planar radiographs. We validated the results in vitro on radiographs of dried vertebrae with models constructed from a laser-scanner, then in vivo on radiographs of living patients with models extracted from CT scans or MRI. The results show the feasibility of generating personalised models of patients from bi-planar radiographs. The contributions of this thesis are: - Evaluation of the methods for creating 3D models of vertebrae and estimation of the errors in comparison with ground truth data. These methods are applicable to other free-form shapes; - Creation of landmark free ASMs of lumbar vertebrae; - Definition and evaluation of a process for estimating the shape and position of lumbar spine from uncalibrated bi-planar radiographs.
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherUniversity of Otago
dc.rightsAll items in OUR Archive are provided for private study and research purposes and are protected by copyright with all rights reserved unless otherwise indicated.
dc.subject3D
dc.subjectreconstruction
dc.subjectlumbar
dc.subjectspine
dc.subjectshape
dc.subjectstatistical
dc.subjectmodelling
dc.subjectbiomedical
dc.subjectimaging
dc.subjectvertebra
dc.subjectvertebrae
dc.subjectASM
dc.subjectSSM
dc.subjectPDM
dc.subject3d reconstruction
dc.subjectlumbar spine
dc.subjectactive shape model
dc.subjectstatistical shape model
dc.subjectshape modelling
dc.subjectpoint distribution model
dc.subjectlandmark free
dc.subjectx-rays
dc.subjectradiographs
dc.subjectbi-planar radiographs
dc.subjectthree dimensional
dc.subjectdried vertebrae
dc.titleThree Dimensional Reconstruction of Human Lumbar Spine from Bi-planar Radiographs
dc.typeThesis
dc.date.updated2017-10-25T02:36:31Z
dc.language.rfc3066en
thesis.degree.disciplineComputer Science
thesis.degree.nameDoctor of Philosophy
thesis.degree.grantorUniversity of Otago
thesis.degree.levelDoctoral
otago.openaccessOpen
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