An investigation into a technique of reconstruction tomography.

McCombie, William Francis

Abstract

The aim of this research was to investigate a new technique of reconstruction tomography to be applied to a new type of radioactivity detecting 'camera'. Radioactive isotopes can be injected into a human and their paths through the body can be monitored by these 'cameras'. Conventional 'cameras' involve a moving detector, whereas the static type of 'camera' being developed by Dr J E Bateman at Rutherford Laboratory, has fixed detectors. The purpose was to convert the information collected by this static type of 'camera' into a picture of the cross-section of the human body. The first part of the work involved writing a program to simulate the effects of known geometry, three-dimensional containers, 'phantoms', filled with the radioactive isotopes. The two containers simulated were the cuboid and the sphere, and these could be either hollow or solid. The program could create 'simulated phantoms' anywhere in three-dimensional space. It also had the capability of producing data which took into account the defects and limitations of the 'camera'. The second part involved writing a program to reconstruct a layer of the body from the data produced by the 'camera'. This involved having to process the data to remove unwanted information from the picture. New processes, for improving information content of a picture, have been developed and evaluated. These processes produced encouraging results, but displayed some problems. These were investigated to try and minimise their effect. These processes were also compared with conventional techniques of picture processing.

Citation

MCCOMBIE, W.F. 1982. An investigation into a technique of reconstruction tomography. Robert Gordon's Institute of Technology, MPhil thesis. Hosted on OpenAIR [online]. Available from: https://doi.org/10.48526/rgu-wt-1993202

• Thesis Type: Thesis
• Deposit Date: Oct 7, 2024
• Publicly Available Date: Oct 7, 2024
• DOI: https://doi.org/10.48526/rgu-wt-1993202
• Public URL: https://rgu-repository.worktribe.com/output/1993202
• Award Date: Oct 31, 1982