IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0353744
(2009-01-14)
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등록번호 |
US-7839973
(2011-01-22)
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발명자
/ 주소 |
- Nord, Janne
- Peltola, Jarkko
- Toimela, Lasse
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출원인 / 주소 |
- Varian Medical Systems International AG
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
24 인용 특허 :
0 |
초록
▼
A method for use in a treatment planning process includes determining a modulability factor, and determining a treatment parameter using the modulability factor. A system for use in a treatment planning process includes a processor, wherein the processor is configured for determining a modulability
A method for use in a treatment planning process includes determining a modulability factor, and determining a treatment parameter using the modulability factor. A system for use in a treatment planning process includes a processor, wherein the processor is configured for determining a modulability factor, and determining a treatment parameter using the modulability factor. A method for use in a treatment planning process includes determining a visibility factor, and determining a treatment parameter using the visibility factor. A system for use in a treatment planning process includes a processor, wherein the processor is configured for determining a visibility factor, and determining a treatment parameter using the visibility factor.
대표청구항
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What is claimed: 1. A method for use in a treatment planning process, comprising: determining a modulability factor, wherein the modulability factor is a measure of a collimator's ability to modulate its leaves to achieve a given shape for a target; determining a treatment parameter by a processor
What is claimed: 1. A method for use in a treatment planning process, comprising: determining a modulability factor, wherein the modulability factor is a measure of a collimator's ability to modulate its leaves to achieve a given shape for a target; determining a treatment parameter by a processor using the modulability factor; and storing the treatment parameter in a medium. 2. The method of claim 1, wherein the modulability factor is determined by considering a movement of sub-volume projections in an aperture. 3. The method of claim 1, wherein the modulability factor is a function of a number of leaves participating to form a shape of a fluence. 4. The method of claim 1, wherein the modulability factor is a function of a geometry of the target and a geometry of a critical organ. 5. The method of claim 1, further comprising determining a visibility factor, wherein the treatment parameter is determined using also the visibility factor. 6. The method of claim 5, wherein the visibility factor is a measure of how well a ray associated with a collimator configuration reaches the target without traversing a critical organ. 7. The method of claim 5, wherein the visibility factor is a function of a geometry of the target and a geometry of a critical organ. 8. The method of claim 1, wherein the act of determining the treatment parameter comprises determining an objective function that is a function of the modulability factor and a visibility factor. 9. The method of claim 8, wherein the act of determining the treatment parameter further comprises performing an optimization using the objective function. 10. The method of claim 1, wherein the treatment parameter represents one or more of an isocenter position, a rotation axis, a collimator position, a patient support position, a target fluence, a dose, a dose rate, a gantry position, a gantry speed, a leaf sequence, a beam energy, a beam-on condition, and a beam-off condition. 11. The method of claim 10, wherein the act of determining the modubility factor is performed using the processor. 12. The method of claim 1, wherein the medium comprises a non-transitory medium. 13. A method for use in a treatment planning process, comprising: determining a modulability factor; determining a treatment parameter using the modulability factor; and storing the treatment parameter in a medium; wherein the act of determining the modulability factor comprises determining a longest target segment for a leaf of a collimator. 14. The method of claim 13, wherein the act of determining the modulability factor further comprises determining a number of leaves participating to form a shape of a fluence. 15. The method of claim 14, wherein the longest segment for the leaf is used to determine a first factor M1, and the number of leaves participating to form the shape of the fluence is used to determine a second factor M2, and wherein the modulability factor is determined using M1 and M2. 16. A method for use in a treatment planning process, comprising: determining a modulability factor; determining a treatment parameter using the modulability factor; storing the treatment parameter in a medium; and determining a visibility factor, wherein the treatment parameter is determined using also the visibility factor; wherein the visibility factor is determined by: determining an amount of target regions traversed by a ray; determining an amount of critical regions traversed by the ray; and determining a difference using the determined amount of the target regions and the determined amount of the critical regions. 17. A system for use in a treatment planning process, comprising a processor, wherein the processor is configured for: determining a modulability factor, wherein the modulability factor is a measure of a collimator's ability to modulate its leaves to achieve a given shape for a target; and determining a treatment parameter using the modulability factor. 18. The system of claim 17, wherein the modulability factor is determined by considering a movement of sub-volume projections in an aperture. 19. The system of claim 17, wherein the modulability factor is a function of a number of leaves participating to form a shape of a fluence. 20. The system of claim 17, wherein the modulability factor is a function of a geometry of the target and a geometry of a critical organ. 21. The system of claim 17, wherein the processor is further configured for determining a visibility factor, and wherein the processor is configured to determine the treatment parameter using also the visibility factor. 22. The system of claim 21, wherein the visibility factor is a measure of how well a ray associated with a collimator configuration reaches the target without traversing a critical organ. 23. The system of claim 21, wherein the visibility factor is a function of a geometry of the target and a geometry of a critical organ. 24. The system of claim 21, wherein the processor is configured to determine the visibility factor by: determining an amount of target regions traversed by a ray; determining an amount of critical regions traversed by the ray; and determining a difference using the determined amount of the target regions and the determined amount of the critical regions. 25. The system of claim 17, wherein the processor is configured for determining the treatment parameter by determining an objective function that is a function of the modulability factor and a visibility factor. 26. The system of claim 25, wherein the processor is configured for determining the treatment parameter by performing an optimization using the objective function. 27. The system of claim 17, wherein the treatment parameter represents one or more of an isocenter position, a rotation axis, a collimator position, a patient support position, a target fluence, a dose, a dose rate, a gantry position, a gantry speed, a leaf sequence, a beam energy, a beam-on condition, and a beam-off condition. 28. A system for use in a treatment planning process, comprising a processor, wherein the processor is configured for: determining a modulability factor; and determining a treatment parameter using the modulability factor; wherein the processor is configured for determining the modulability factor by determining a longest segment for a leaf of a collimator. 29. The system of claim 28, wherein the processor is configured for determining the modulability factor by determining a number of leaves participating to form a shape of a fluence. 30. The system of claim 29, wherein the processor is configured to use longest segment for the leaf to determine a first factor M1, and use the number of leaves participating to form the shape of the fluence to determine a second factor M2, and wherein the processor is configured for determining the modulability factor using M1 and M2. 31. A method for use in a treatment planning process, comprising: determining a visibility factor, wherein the visibility factor is a measure of how well a ray associated with a collimator configuration reaches a target without traversing a critical organ; determining a treatment parameter by a processor using the visibility factor; and storing the treatment parameter in a medium. 32. The method of claim 31, wherein the visibility factor is a function of a geometry of the target and a geometry of the critical organ. 33. The method of claim 31, wherein the act of determining the visibility factor and the act of determining the treatment parameter are performed using a processor. 34. The method of claim 31, wherein the medium comprises a non-transitory medium. 35. A method for use in a treatment planning process, comprising: determining a visibility factor; determining a treatment parameter using the visibility factor; and storing the treatment parameter in a medium; wherein the visibility factor is determined by: determining an amount of target regions traversed by a ray; determining an amount of critical regions traversed by the ray; and determining a difference using the determined amount of the target regions and the determined amount of the critical regions. 36. A system for use in a treatment planning process, comprising a processor, wherein the processor is configured for: determining a visibility factor, wherein the visibility factor is a measure of how well a ray associated with a collimator configuration reaches a target without traversing a critical organ; and determining a treatment parameter using the visibility factor. 37. The system of claim 36, wherein the visibility factor is a function of a geometry of the target and a geometry of the critical organ. 38. A system for use in a treatment planning process, comprising a processor, wherein the processor is configured for: determining a visibility factor; and determining a treatment parameter using the visibility factor; wherein the processor is configured for determining the visibility factor by: determining an amount of target regions traversed by a ray; determining an amount of critical regions traversed by the ray; and determining a difference using the determined amount of the target regions and the determined amount of the critical regions.
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