Multileaf collimator for electron radiotherapy
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United States of America Patent
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Jan 5, 2010
Grant Date -
Jan 1, 2009
app pub date -
Jun 26, 2007
filing date -
Jun 26, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A flexible multi-leaf collimator for electron radiotherapy is provided, where the leaves are not a single rigid component, but are configured in a manner that curves away from the patient to provide greater clearance. The invention includes a plurality of flexible assemblies, at least one guide supporting the assemblies, and a plurality of assembly drivers. The driver engages the assembly and moves the assembly along the guide. The assembly has an extended state and a retracted state relative to the guide, such that when in the extended state the assembly is held in the aperture plane and when in the retracted state the assembly conforms along the guide. When in the extended state the assemblies are disposed as a treatment aperture.
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