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Author Azuma, I. ♦ Barth, G. ♦ Wachsmann, F.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language German
Subject Keyword BIOLOGY AND MEDICINE ♦ COBALT 60 ♦ DISTRIBUTION ♦ MATHEMATICS ♦ MEASURED VALUES ♦ RADIATION DOSES ♦ RADIATION SOURCES ♦ ROTATION ♦ SURFACES ♦ VARIATIONS
Abstract Measurements about the ratio of surface dose to dose in the axis in case of rotational irradiation as function of source-axis and source-diaphragm distance are reported. Phantom diameters of 18, 24, and 30 cm and focus field sizes between 3 x 6 and 8 x 16 cm were used for these measurements. The different influences were very complex and often difficult to understand. The relative surface dose does not depend greatly on the geometrical conditions chosen. In regard to a high dose rate it is recommended that a source-axis distance of about 60 cm and a sourcediaphragm distance of about 30 cm be chosen for the rotational irradiation with Co/sup 60/. (auth)
ISSN 00392073
Educational Use Research
Learning Resource Type Article
Publisher Date 1963-12-01
Journal Strahlentherapie
Volume Number 122
Organization Universitat, Giessen, Ger. and Universitat, Erlangen, Ger.


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