NON-VOXEL-BASED BROAD-BEAM (NVBB) ALGORITHM FOR INTENSITY MODULATED RADIATION THERAPY DOSE CALCULATION AND PLAN OPTIMIZATION
First Claim
1. A method of calculating a dose distribution for a patient for use in a radiation therapy treatment plan, the method comprising:
- acquiring an image of a volume within the patient;
defining a radiation source;
defining a reference plane oriented between the radiation source and the patient;
generating a radiation therapy treatment plan, the plan including a plurality of rays that extend between the radiation source and the patient volume;
calculating a three-dimensional dose volume for the patient volume from the plurality of rays that intersect the reference plane without first having to independently calculate a dose distribution on each of the plurality of rays; and
displaying the three-dimensional dose volume.
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Abstract
A method of calculating a dose distribution for a patient for use in a radiation therapy treatment plan. The method includes acquiring an image of a volume within the patient, defining a radiation source, and defining a reference plane oriented between the radiation source and the patient. The method also includes generating a radiation therapy treatment plan, wherein the plan includes a plurality of rays that extend between the radiation source and the patient volume, and calculating a three-dimensional dose volume for the patient volume from the plurality of rays that intersect the reference plane without first having to independently calculate a dose distribution on each of the plurality of rays. The method can also include displaying the three-dimensional dose volume.
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Citations
32 Claims
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1. A method of calculating a dose distribution for a patient for use in a radiation therapy treatment plan, the method comprising:
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acquiring an image of a volume within the patient; defining a radiation source; defining a reference plane oriented between the radiation source and the patient; generating a radiation therapy treatment plan, the plan including a plurality of rays that extend between the radiation source and the patient volume; calculating a three-dimensional dose volume for the patient volume from the plurality of rays that intersect the reference plane without first having to independently calculate a dose distribution on each of the plurality of rays; and displaying the three-dimensional dose volume. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of optimizing a dose distribution for a patient for use in a radiation therapy treatment plan, the method comprising:
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(a) acquiring an image of a volume within the patient; (b) generating a radiation therapy treatment plan, the plan including a plurality of rays that extend between a radiation source and the patient volume; (c) generating an initial set of machine parameters; (d) calculating a three-dimensional dose volume based on the initial set of machine parameters and the patient volume, the calculation further based on the plurality of rays that intersect the reference plane without first having to independently calculate a dose distribution on each of the plurality of rays; (e) evaluating an objective functional based on the three-dimensional dose volume; (f) calculating a first derivative of the objective functional; (g) updating the initial set of machine parameters based on the objective functional; and (h) repeating acts (d) through (g) at least one time. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification