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KMID : 1164219960080010109
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Journal of Korean Society for Radiotherapeutic Technology
1996 Volume.8 No. 1 p.109 ~ p.114
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DOSIMETRY OF ASYMMETRIC COLLIMATIORS
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Jeon Byong-Chul
Park Jae-Il
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Abstract
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PURPOSE : To investigate the effect of asymmetric jaws for delivering a uniform accurate dose of radiation to the junctions.
METHODS & MATERIALS : A linear accelerator with a set of asymmetric jaws(varian 600C, 2100C, 2100CD with 4mev, 10mev, 10mev). Dose disribution was measured at the junctions with films in phantom. Total with each in deviation of jaws.
RESULTS : Film dosimetry showed the accuracy of asymmetric jaws depending on the machine.
CONCLUSION : Understanding the mechanical characteristics of the use of half-beam at the junctions, without hot or cold regions.
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KEYWORD
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