Dose-volume kernel generation
First Claim
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1. A radiation treatment planning system comprising:
- a dose volume kernel determiner that determines a dose volume kernel of a targeted radionuclide therapy for each of a plurality of voxels in a dose calculation grid in image data generated by one of a SPECT scanner or a PET scanner, and the dose volume kernel includes a multi-dimensional array that describes a dose absorbed in neighboring voxels due to an amount of radioactivity of a radionuclide in a source voxel;
wherein the dose volume kernel determiner determines the dose volume kernel for a voxel of the plurality of voxels by sampling a single pre-calculated and stored radial dose distribution, which is pre-calculated around a point source and represents an absorbed dose due to the point source of a therapy isotope as a function of distance from the point source to a predetermined voxel size using a template function for the predetermined voxel size corresponding to a size of the voxel;
an expected absorbed dose determiner that determines an expected absorbed dose distribution for each of the plurality of voxels based on the dose volume kernel; and
a user interface that displays an expected absorbed dose map with a total expected absorbed dose determined for each voxel using the determined expected absorbed dose distribution.
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Abstract
A radiation planning system includes a dose volume kernel determiner (122) and an expected absorbed dose determiner (124). The dose volume kernel determiner (122) generates a dose volume kernel for each of a plurality of voxels in a dose calculation grid. Each of the dose volume kernels is based on a radial dose distribution and a template function for a particular voxel size. The expected absorbed dose determiner (124) determines an expected absorbed dose distribution for each of the plurality of voxels based on the dose volume kernel.
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Citations
28 Claims
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1. A radiation treatment planning system comprising:
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a dose volume kernel determiner that determines a dose volume kernel of a targeted radionuclide therapy for each of a plurality of voxels in a dose calculation grid in image data generated by one of a SPECT scanner or a PET scanner, and the dose volume kernel includes a multi-dimensional array that describes a dose absorbed in neighboring voxels due to an amount of radioactivity of a radionuclide in a source voxel; wherein the dose volume kernel determiner determines the dose volume kernel for a voxel of the plurality of voxels by sampling a single pre-calculated and stored radial dose distribution, which is pre-calculated around a point source and represents an absorbed dose due to the point source of a therapy isotope as a function of distance from the point source to a predetermined voxel size using a template function for the predetermined voxel size corresponding to a size of the voxel; an expected absorbed dose determiner that determines an expected absorbed dose distribution for each of the plurality of voxels based on the dose volume kernel; and a user interface that displays an expected absorbed dose map with a total expected absorbed dose determined for each voxel using the determined expected absorbed dose distribution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method, comprising:
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generating a template function for a particular voxel size, wherein the template function includes geometric information specific to the voxel size; retrieving, by a processor, a pre-calculated radial dose distribution, wherein the pre-calculated radial dose distribution function represents absorbed dose due to a point source of a therapy isotope as a function of distance from the point source; generating a dose volume kernel of a targeted radionuclide therapy for the voxel size based on the template function and the radial dose distribution by sampling the pre-calculated radial dose distribution to the voxel size by calculating a product of the pre-calculated radial dose distribution and the template function and integrating the product, and the dose volume kernel includes a multi-dimensional array that describes a dose absorbed in neighboring voxels due to an amount of radioactivity of a radionuclide in a source voxel in a dose calculation grid in image data generated by one of a SPECT scanner or a PET scanner; displaying an expected absorbed dose map with a total expected absorbed dose determined for each voxel using the generated dose volume kernel. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method, comprising:
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prompting a user for a voxel size; notifying the user when there is no dose volume kernel of a targeted radionuclide therapy for the voxel size available from a system; receiving an input indicative of a type of template function to generate from the user; generating the template function based on the voxel size;
obtaining a pre-calculated radial dose distribution, which is pre-calculated around a point source and represents an absorbed dose due to the point source of a therapy isotope as a function of distance from the point source; andgenerating, by a processor, a dose volume kernel for the voxel size by calculating a product of the pre-calculated radial dose distribution and the template function and integrating the product, and the dose volume kernel includes a multi-dimensional array that describes a dose absorbed in neighboring voxels due to an amount of radioactivity of a radionuclide in a source voxel in a dose calculation grid in image data generated by one of a SPECT scanner or a PET scanner; displaying an expected absorbed dose map with a total expected absorbed dose determined for each voxel using the generated dose volume kernel. - View Dependent Claims (26, 27, 28)
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Specification