| The Application of Step Filter in High Energy Photon Beams
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| 고에너지 광자선 조사면내 계층필터의 응용 |
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최태진; 김옥배 |
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| Abstract |
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The half-value layer (HVL) of cerrobend alloy [p~9.4g/ccj was examined by experimental measurements for 6MV X-ray beams.
The output factors are a function of field size; thickness of attenuator; especially those factors for a blocked field are less than that for the collimater open field size.
Measured dose distributions under attenuators; which are blocked with partially transmitted slab at whole field size; were presented.
The expected dose distributions under partial attenuators agree well with measured data; which has shown that partial attenuator method can be applied in radiation treatment planning.
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