System and method for optimized dynamic collimator rotation in volumetric modulated arc therapy
AssigneeThe Regents of the University of California
InventorKe Sheng
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Abstract
Systems and method for generating and executing volumetric modulated arc therapy (“VMAT”) plans are provided. In some aspects, the method includes receiving a representation of a subject comprising information related to target and non-target volumes of interest, and generating an objective function based on the representation of the subject, wherein the objective function accounts for dynamic collimator rotation. The method also includes performing an iterative optimization process, using the objective function, to generate a dynamic collimator VMAT plan, and generating a report in accordance with the dynamic collimator VMAT plan.
Claims20
A method for treating a subject using a dynamic collimator volumetric modulated arc therapy (“VMAT”) plan, the method comprising:
- receiving a representation of the subject comprising information related to target and non-target volumes of interest;
- generating an objective function based on the representation of the subject, wherein the objective function accounts for dynamic collimator rotation;
- performing an iterative optimization process using the objective function to generate the dynamic collimator VMAT plan;
- identifying an aperture shape for a plurality of apertures by minimizing the objective function in the iterative optimization process;
- and
- irradiating the subject in accordance with the dynamic collimator VMAT plan.
A volumetric modulated arc therapy (“VMAT”) system comprising:
- a radiation source configured to generate and direct radiation to a subject;
- a gantry housing the radiation source and configured to rotate about an axis of rotation;
- a control mechanism configured to control the rotation of the gantry and a delivery of radiation from the radiation source to a target volume in the subject;
- and
- a computer in communication with the control mechanism, wherein the computer is configured to:
- receive a representation of the subject comprising information related to target and non-target volumes of interest;
- generate an objective function based on the representation of the subject, wherein the objective function accounts for dynamic collimator rotation;
- perform an iterative optimization process using the objective function to generate a dynamic collimator VMAT plan;
- identify an aperture shape for a plurality of apertures by minimizing the objective function in the iterative optimization process;
- and
- generate and provide control signals to the control mechanism, in accordance with the dynamic collimator VMAT plan, to irradiate the subject.
Dependencies are inferred from the claim text.