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US 9,789,337 B2Granted
Combined imaging modalities for radiation treatment planning
AssigneeSiemens Medical Solutions USA, Inc.
InventorAli Bani-Hashemi
Life of this patent
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Abstract
A system includes acquisition of a first three-dimensional image of a patient volume using a magnetic resonance imaging scanner, acquisition of a second three-dimensional image of the patient volume using cone beam radiation emitted by the linear accelerator, and generation of a radiation treatment plan based on the first image and the second image.
Claims14
A method comprising:
- acquiring a first three-dimensional image of a patient volume using a magnetic resonance imaging scanner;
- recording a treatment isocenter of the patient volume based on the first three-dimensional image;
- registering the treatment isocenter of the patient volume with an isocenter of a linear accelerator;
- acquiring a second three-dimensional image of the patient volume using cone beam radiation emitted by the linear accelerator while the treatment isocenter of the patient volume is registered with the isocenter of the linear accelerator;
- defining a plurality of sub-regions within the patient volume based on the first three-dimensional image;
- determining a radiation dose associated with each of the plurality of sub-regions based on the second three-dimensional image, the determining of the radiation dose associated with each of the plurality of sub-regions including:
- overlaying contours illustrative of the plurality of sub-regions from the first three-dimensional image of the patient volume onto the second three-dimensional image of the patient volume, wherein the contours are aligned with the second three-dimensional image based on the registration of the treatment isocenter of the patient volume with the isocenter of the linear accelerator;
- calculating the radiation dose associated with each of the plurality of sub-regions using electron density information of the second three-dimensional image;
- and
- generating a radiation treatment plan based on an overlay of a representation of the calculated radiation dose for each of the plurality of sub-regions onto the first image.
7 more elements
A non-transitory computer-readable medium storing processor-executable program code executable to:
- acquire a first three-dimensional image of a patient volume using a magnetic resonance imaging scanner;
- record a treatment isocenter of the patient volume based on the first three-dimensional image;
- register the treatment isocenter of the patient volume with an isocenter of a linear accelerator;
- acquire a second three-dimensional image of the patient volume using cone beam radiation emitted by the linear accelerator, while the treatment isocenter of the patient volume is registered with the isocenter of the linear accelerator;
- define a plurality of sub-regions within the patient volume based on the first three-dimensional image;
- determine a radiation dose associated with each of the plurality of sub-regions based on the second three-dimensional image, the determining of the radiation dose associated with each of the plurality of sub-regions including:
- overlay contours illustrative of the plurality of sub-regions from the first three-dimensional image of the patient volume onto the second three-dimensional image of the patient volume, wherein the contours are aligned with the second three-dimensional image based on the registration of the treatment isocenter of the patient volume with the isocenter of the linear accelerator;
- calculate the radiation dose associated with each of the plurality of sub-regions using electron density information of the second three-dimensional image;
- and
- generate a radiation treatment plan based on an overlay of a representation of the calculated radiation dose for each of the plurality of sub-regions onto the first image.
7 more elements
A system comprising:
- a magnetic resonance imaging scanner to acquire a first three-dimensional image of a patient volume;
- a processor to record a treatment isocenter of the patient volume based on the first three-dimensional image, wherein the treatment isocenter of the patient volume is registered, by the processor, with an isocenter of the linear accelerator;
- a linear accelerator to emit cone beam radiation to acquire a second three-dimensional image of the patient volume while the treatment isocenter of the patient volume is registered with the isocenter of the linear accelerator;
- wherein the processor is further adapted to:
- define a plurality of sub-regions within the patient volume based on the first three-dimensional image;
- determine a radiation dose associated with each of the plurality of sub-regions based on the second three-dimensional image, the determining of the radiation dose associated with each of the plurality of sub-regions including:
- overlay contours illustrative of the plurality of sub-regions from the first three-dimensional image of the patient volume onto the second three-dimensional image of the patient volume, wherein the contours are aligned with the second three-dimensional image based on the registration of the treatment isocenter of the patient volume with the isocenter of the linear accelerator;
- calculate the radiation dose associated with each of the plurality of sub-regions using electron density information of the second three-dimensional image;
- and
- generate a radiation treatment plan based on an overlay of a representation of the calculated radiation dose for each of the plurality of sub-regions onto the first image.
7 more elements
Dependencies are inferred from the claim text.