Presented here is an investigation to establish physical rationale for the acceptance by physicians of a new form of blocking device for radiotherapy. The focus of the investigation is on the percent dosage obtained in the penumbral regions created by 6 mm and 9 mm stepped-edge blocks, relative to a straight edge, when exposed to 1.25 and 18 MeV photons.
Library of Congress Subject Headings
Diagnostic imaging--Safety measures; Radiotherapy--Safety measures; Radiation dosimetry
Department, Program, or Center
Chester F. Carlson Center for Imaging Science (COS)
Ciccone, Theresa, "An investigation into the penumbral dose of a bloxel, (block element) matrix-design block to replace currently utilized radiation treatment field shaping techniques" (1984). Thesis. Rochester Institute of Technology. Accessed from
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