System and methods for accelerating simulation of radiation treatment
First Claim
1. A method for estimating a radiation dose and distribution for a target volume, the method comprising:
- receiving a simulated dose array, the dose array describing a plurality of simulated dose values for a plurality of voxels in the target volume;
generating a non-uniform energy deposition coefficient function for the plurality of voxels;
obtaining a raw fluence array based at least on the simulated dose array and the energy deposition coefficient function;
generating an adjusted fluence array based on the raw fluence array and at least one adjustment function; and
generating an adjusted dose array for the target volume based on the adjusted fluence array and the energy deposition coefficient function;
wherein the adjusted dose array is of the form
D( r)=μ
( r)[ . . . ],where μ
( r) is the energy deposition coefficient function which is defined by a set of coefficients which describe mean energy deposition per fluence at a specified voxel, D( r) is the adjusted dose array at a specified voxel, and r is the specified voxel.
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Abstract
A method for estimating a radiation dose and distribution for a target volume is provided. The method includes receiving a simulated dose array (606) describing a plurality of simulated dose values for a plurality of voxels in the target volume, generating an energy deposition coefficient function for the plurality of voxels (608), and obtaining a raw fluence array based at least on the simulated dose array and the energy deposition coefficient function (612). The method also includes generating an adjusted fluence array (613) based on the raw fluence array and at least one adjustment criteria, and generating an adjusted dose array (622) for the target volume based on the adjusted fluence array and the energy deposition coefficient function.
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Citations
21 Claims
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1. A method for estimating a radiation dose and distribution for a target volume, the method comprising:
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receiving a simulated dose array, the dose array describing a plurality of simulated dose values for a plurality of voxels in the target volume; generating a non-uniform energy deposition coefficient function for the plurality of voxels; obtaining a raw fluence array based at least on the simulated dose array and the energy deposition coefficient function; generating an adjusted fluence array based on the raw fluence array and at least one adjustment function; and generating an adjusted dose array for the target volume based on the adjusted fluence array and the energy deposition coefficient function; wherein the adjusted dose array is of the form
D(r )=μ
(r )[ . . . ],where μ
(r ) is the energy deposition coefficient function which is defined by a set of coefficients which describe mean energy deposition per fluence at a specified voxel, D(r ) is the adjusted dose array at a specified voxel, andr is the specified voxel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A radiation treatment system, comprising:
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a computer processing system including at least one processor and associated memory; wherein the memory is configured to store information that represents a simulated dose array, the simulated dose array describing a plurality of simulated dose values for a plurality of voxels in a target volume comprising one or more different compositions; and wherein the processor is configured to; generate a non-uniform energy deposition coefficient function for the plurality of voxels as defined by the information stored in the memory; generate a raw fluence array based at least on the simulated dose array as defined by the information stored in the memory and the energy deposition coefficient function; generate an adjusted fluence array based on the raw fluence array and at least one adjustment function; and generate an adjusted dose array for the target volume based on the adjusted fluence array and the energy deposition coefficient function; wherein the adjusted dose array is of the form
D(r )=μ
(r )[ . . . ],where μ
(r ) is the energy deposition coefficient function which is defined by a set of coefficients which describe mean energy deposition per fluence at a specified voxel,D(r) is the adjusted dose array at a specified voxel, and r is the specified voxel. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A method for estimating a radiation dose and distribution for a target volume, comprising:
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receiving a simulated dose array, the dose array describing a plurality of simulated dose values for a plurality of voxels in the target volume; generating a non-uniform energy deposition coefficient function for the plurality of voxels; obtaining a raw fluence array based at least on the simulated dose array and the energy deposition coefficient function; generating an adjusted fluence array based on the raw fluence array and at least one adjustment function; and generating an adjusted dose array for the target volume based on the adjusted fluence array and the energy deposition coefficient function; wherein, for a given voxel, the adjusted dose array is generated subsequent to the generation of the energy deposition coefficient function and the generation of adjusted fluence array, and the energy deposition coefficient function for the given voxel and the adjusted fluence array for the given voxel are used to calculate the adjusted dose array for the given voxel; wherein, the adjusted dose array for the given voxel is based on a product of the adjusted fluence array for the given voxel and the energy deposition coefficient function for the given voxel. - View Dependent Claims (21)
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Specification