Development, characterization and application of the s-transform to medical imaging

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dc.contributor.advisorFrayne, Richard
dc.contributor.authorBrown, Robert A.
dc.date.accessioned2017-12-18T21:31:31Z
dc.date.available2017-12-18T21:31:31Z
dc.date.issued2008
dc.descriptionBibliography: p. 164-175en
dc.descriptionSome pages are in colour.en
dc.description.abstractThe S-transform (ST) is a relatively new technique, first proposed in 1996 and applied to problems in geophysics. The properties and applications of the transform, and its relationship to existing techniques have not been fully explored. Though some applications, particularly in medical signal and image processing, have shown promise, the high computational requirements of the algorithm have hampered research and application of the ST. In this thesis the computational requirements of the ST are addressed and a promising image processing technique using the transform is characterized, validated and applied to several biomedical imaging problems. Two approaches to speeding up the ST are explored: (1) a parallel ST algorithm is introduced, which allows the ST calculation to take advantage of modern multi-processor hardware and computing clusters and (2) a fast ST algorithm is formulated, which dramatically reduces the computational requirements of the transform. Additionally, a general description of time-frequency transforms is presented, which clearly demonstrates the similarities and differences between the ST and both the wavelet and Fourier families of transforms. Extending this theoretical relationship, a technique that uses the ST to detect and quantify image texture is compared to an equivalent procedure based on the Fourier transform, and validated using a purpose built magnetic resonance phantom. The ST texture analysis technique is then applied to several examples of medical image analysis problems. One of these potential applications, detection of an important genetic marker in brain tumours, is explored in depth with a clinical study of 54 patients.
dc.format.extentxxxi, 182 leaves : ill. ; 30 cm.en
dc.identifier.citationBrown, R. A. (2008). Development, characterization and application of the s-transform to medical imaging (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/1611en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/1611
dc.identifier.urihttp://hdl.handle.net/1880/102612
dc.language.isoeng
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.titleDevelopment, characterization and application of the s-transform to medical imaging
dc.typedoctoral thesis
thesis.degree.disciplineBiomedical Engineering
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameDoctor of Philosophy (PhD)
ucalgary.item.requestcopytrue
ucalgary.thesis.accessionTheses Collection 58.002:Box 1774 520708937
ucalgary.thesis.notesUARCen
ucalgary.thesis.uarcreleaseyen
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