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Permanent link (DOI): https://doi.org/10.7939/R38070

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Efficient data acquisition, transmission and post-processing for quality spiral Magnetic Resonance Imaging Open Access

Descriptions

Other title
Subject/Keyword
dynamic range
data compression
high-density coil arrays
spiral MRI
wireless coils
spectral compression
artifact correction
image deblurring
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Jutras, Jean-David
Supervisor and department
De Zanche, Nicola (Oncology)
Wachowicz, Keith (Oncology)
Fallone, B. Gino (Oncology)
Thompson, Richard (Biomedical Engineering)
Examining committee member and department
Wilman, Alan (Biomedical Engineering)
Fallone, B. Gino (Oncology)
Thompson, Richard (Biomedical Engineering)
De Zanche, Nicola (Oncology)
Wachowicz, Keith (Oncology)
Department
Department of Oncology
Specialization

Date accepted
2011-09-20T04:05:08Z
Graduation date
2011-11
Degree
Master of Science
Degree level
Master's
Abstract
Spiral Magnetic Resonance Imaging (MRI) has traditionally presented more technical and computational challenges compared to its traditional Cartesian counterpart, notably a susceptibility to blurring artifacts, especially when scan parameters are non-optimal, and a heavier computational load both at the image reconstruction, and post-processing level. This research is aimed at improving the efficiency of data acquisition, transmission and post-processing for spiral MRI, which continues to become a more common sequence choice in applications where speed, signal-to-noise ratio and geometrical accuracy are key requirements. In the first part of this thesis, we cover the fundamentals of spiral trajectory design and acquisition, image reconstruction by means of fast Gaussian gridding, and a rapid method for deblurring a large in vivo dataset. In the second part, we introduce a novel technique for compressing spiral MR data acquired from a multi-channel coil array, with applications in wireless transmission and data storage. The compressed images are indistinguishable from the originals even though the data has been compressed by a factor of 3 or more.
Language
English
DOI
doi:10.7939/R38070
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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File format: pdf (Portable Document Format)
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File size: 5727101
Last modified: 2015:10:12 11:18:10-06:00
Filename: Jutras_Jean-David_Fall_2011.pdf
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File title: Overview
File title: Efficient Data Acquisition, Transmission and Post-Processing for High-Quality Spiral Magnetic Resonance Images, M. Sc. Thesis
File author: Jean-David Jutras
Page count: 103
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