Image reconstruction from projections

Type of content
Theses / Dissertations
Publisher's DOI/URI
Thesis discipline
Electrical Engineering
Degree name
Doctor of Philosophy
Publisher
University of Canterbury
Journal Title
Journal ISSN
Volume Title
Language
English
Date
1973
Authors
Peters, T.M.
Abstract

The problem of reconstructing cross-sections from their projections, using Fourier transform processing, is considered in detail and is related to problems in medical tomography. A number of equations relating cross-sections to their projections are derived, and are used as the bases for algorithms which enable cross-sections to be reconstructed from a finite number of projections. Results of computations on analytically derived and radiographically measured projections demonstrate the usefulness of these techniques.

A proposal for a new type of transverse tomographic system is described. It is demonstrated that images of cross­ sections may be restored from tomograms produced using this system, by the use of both optical and digital processing techniques.

Image reconstruction techniques using Fourier transforms are shown to be of use for reconstructing three-dimensional radio-isotope distributions, from scintigraphic projections measured with a gamma camera.

Description
Citation
Keywords
Ngā upoko tukutuku/Māori subject headings
ANZSRC fields of research
Rights
All Right Reserved