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KMID : 0391119950040010067
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Ulsan University Medical Journal
1995 Volume.4 No. 1 p.67 ~ p.70
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The Radiation shielding characteristics of the newly developed type Multi-leaf Collimator
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Abstract
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We have newly developed Multi-leaf Collimator(MLC), which is the one of the essential equipments for coformal therapy, and examined its radiation shielding characteristics.
Radiation transmission through leaf is 1.5~1.9% for various photon energies(4MV, 6MV and 15MV) at the dmax depth. And those for various depths are around 2%: The transmission factor is increased as photon energy increases, while one cannot find
depth-transmission relation. Inter-leaf leakage is 1.9%~2.5%, which is good for clinical application.
AMC type MLC shows superior shielding characteristics to commercially available MLC system.
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KEYWORD
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