Bibliography: p. 217-234. / xvii, 234 p. : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / A method of calculating beam data using sector-integration of Monte Carlo-generated pencil beam kernels has been proposed. This technique can be used both for circular and irregular fields, however it is more useful in calculating dosimetry parameters for irregular fields where the shape of treatment fields is determined during planning. / Thesis (Ph.D.)--University of Adelaide, Dept. of Physics and Mathematical Physics, 1996