Modulation of x-ray fluence patterns in cone-beam computed tomography.
Published: 2006
Language: eng
Number of pages: 77
ISBN-13: 9780494212653
Description: The targeting of tumours treated with external beam radiation therapy stands to be greatly improved by way of systems capable of imaging patients at the time of treatment. There remains a great deal of improvement to be made to cone-beam computed tomography systems to provide the ideal method for guiding treatments. One technique currently under investigation is the development of fluence modulating filters capable of greatly reducing both scattered radiation at the detector and patient dose. These filters may take the form of simple "bow-tie" filters that alter the fluence by the same degree in each projection image, or they may be designed to deliver intensity-modulated fluence patterns that change across a projection image as well as with different view angles. These filters bring about the possibility of obtaining prescribed images optimized for a specific imaging task and patient.
Notes: Source: Masters Abstracts International, Volume: 45-03, page: 1413.

Thesis (M.Sc.)--University of Toronto, 2006.

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