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1 From the Department of Radiology, State University of New York Downstate Medical Center, Brooklyn, New York, and Kings County Hospital Center, Brooklyn, New York
The method used to design and construct a universal wedge filter system for a cobalt 6o unit is described. The system is universal in that all field sizes may be used with a single wedge filter for a particular wedge angle. These wedge filters and their isodose curves may easily be calculated and constructed.
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