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KMID : 0384619940050020045
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Korean Journal of Medical Physics
1994 Volume.5 No. 2 p.45 ~ p.48
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The Design of unevenly leaf width distributed multileaf Collimator
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Yi Byong-Yong
Chang Hye-Sook
Cho Byung-Chul
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Abstract
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We have studied about leaf-width distribution of Multileaf Collimator(MLC). We have analyzed 1169 treatment fields from 303 patients who have treated by radiation therapy. From this analysis, we can design an unevenly leaf-width distributed MLC, by placing the smaller leaf widths for more frequent blocking region and the larger for less. The average width of total leaves is 0.8 cm, but the effective block width is 0.5-0.6 cm for frequently blocking region(3-6 cm from the field center).
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