X-ray or gamma ray systems or devices – Specific application – Absorption
Reexamination Certificate
2005-06-14
2005-06-14
Ho, Allen C. (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Absorption
C378S064000, C378S151000, C378S152000
Reexamination Certificate
active
06907105
ABSTRACT:
A method and system for controlling the spatial distribution of radiation produced by a radiation device having a multi-leaf collimator can generate arbitrary intensity-modulated radiation fields. The methods control both angles and leaf configuration of the multi-leaf collimator for each of multiple sub-fields. The leaf positions, collimator angles, and individual sub-field contributions may be derived by optimization techniques.
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BC Cancer Agency
Ho Allen C.
Oyen Wiggs Green & Mutala
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