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US Patent 7826593 Collimator

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Patent
Patent

Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7826593
Date of Patent
November 2, 2010
Patent Application Number
12519565
Date Filed
December 7, 2007
Patent Citations Received
‌
US Patent 12005274 High dose rate radiotherapy, system and method
3
‌
US Patent 11878185 High bandwidth binary multi-leaf collimator design
4
‌
US Patent 11904184 Radiation therapy systems and methods with tumor tracking
5
Patent Primary Examiner
‌
Hoon Song
Patent abstract

A collimator (1) primarily adapted for usage in a narrow scanned pencil beam radiation therapy system (100) includes adjacent pairs (5) of collimator leaves (10, 20). An inner portion (12) of a collimator leaf (10) facing the opposite leaf (20) of a pair (5) is made of a first material having high linear radiation attenuation. The remaining, major portion (14) of the leaf (10) is made of a second material having a comparatively low density, weight and radiation attenuation. The collimator (1) provides effective penumbra trimming of a radiation beam (60), while simultaneously protecting healthy tissue around a tumor in an irradiated patient (80) from the radiation. The new design results in a significantly more compact, lighter and less expensive collimator (1) as compared to traditional collimators.

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