Multi-field charged particle cancer therapy method and apparatus coordinated with patient respiration
First Claim
1. A particle beam irradiation apparatus for cancer therapy of a tumor of a patient with charged particles running along a beam path, comprising:
- a synchrotron, said synchrotron comprising at least a portion of said beam path, said synchrotron further comprising;
a center, wherein said beam path runs;
about said center;
through straight sections in said synchrotron; and
through turning sections in said synchrotron,wherein each of said turning sections comprises a plurality of bending magnets,wherein said circulation beam path comprises a length of less than sixty meters, andwherein a number of said straight sections equals a number of said turning sections;
a respiration sensor generating a respiration signal, said respiration signal corresponding to a breathing cycle;
a rotatable platform,wherein said beam path crosses above at least a portion of said rotatable platform,wherein said rotatable platform rotates through at least one hundred eighty degrees during an irradiation period,wherein said synchrotron comprises timing to a set point in said breathing cycle using said respiration signal,wherein operation of said synchrotron at said set point of said breathing cycle occurs in greater than four rotation positions of said rotatable platform.
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Abstract
The invention relates generally to treatment of solid cancers. More particularly, the invention relates to a multi-field imaging and/or a multi-field charged particle cancer therapy method and apparatus coordinated with patient respiration via use of feedback sensors used to monitor and/or control patient respiration. Preferably, the multi-field imaging, such as X-ray imaging, and the charged particle therapy are performed on a patient in a partially immobilized and repositionable position. X-ray and/or proton delivery is timed to patient respiration via control of charged particle beam injection, acceleration, extraction, and/or targeting methods and apparatus.
411 Citations
32 Claims
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1. A particle beam irradiation apparatus for cancer therapy of a tumor of a patient with charged particles running along a beam path, comprising:
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a synchrotron, said synchrotron comprising at least a portion of said beam path, said synchrotron further comprising; a center, wherein said beam path runs; about said center; through straight sections in said synchrotron; and through turning sections in said synchrotron, wherein each of said turning sections comprises a plurality of bending magnets, wherein said circulation beam path comprises a length of less than sixty meters, and wherein a number of said straight sections equals a number of said turning sections; a respiration sensor generating a respiration signal, said respiration signal corresponding to a breathing cycle; a rotatable platform, wherein said beam path crosses above at least a portion of said rotatable platform, wherein said rotatable platform rotates through at least one hundred eighty degrees during an irradiation period, wherein said synchrotron comprises timing to a set point in said breathing cycle using said respiration signal, wherein operation of said synchrotron at said set point of said breathing cycle occurs in greater than four rotation positions of said rotatable platform. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21)
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4. A particle beam irradiation apparatus for cancer therapy of a tumor of a patient with charged particles running along a beam path, comprising:
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a synchrotron, said synchrotron comprising at least a portion of said beam path; a respiration sensor generating a respiration signal, said respiration signal corresponding to a breathing cycle; and a rotatable platform, wherein said beam path crosses above at least a portion of said rotatable platform, wherein said rotatable platform rotates through at least one hundred eighty degrees during an irradiation period, wherein said synchrotron comprises timing to a set point in said breathing cycle using said respiration signal, wherein operation of said synchrotron at said set point of said breathing cycle occurs in greater than four rotation positions of said rotatable platform, wherein said respiration sensor further comprises; a first thermal resistor positioned proximate the patient'"'"'s nose; a second thermal resistor positioned both out of an exhalation path of the patient and in the same local room environment as the rotatable platform, wherein said respiration signal is generated using differences between readings from said first thermal resistor and said second thermal resistor.
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13. A particle beam irradiation apparatus for cancer therapy of a tumor of a patient with charged particles running along a beam path, comprising:
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a synchrotron, said synchrotron comprising at least a portion of said beam path; a respiration sensor generating a respiration signal, said respiration signal corresponding to a breathing cycle; a rotatable platform, wherein said beam path crosses above at least a portion of said rotatable platform, wherein said rotatable platform rotates through at least one hundred eighty degrees during an irradiation period, wherein said synchrotron comprises timing to a set point in said breathing cycle using said respiration signal, and wherein operation of said synchrotron at said set point of said breathing cycle occurs in greater than four rotation positions of said rotatable platform, wherein said synchrotron further comprises exactly four ninety degree turning sections, wherein each of said four ninety degree turning sections further comprises at least four magnets having a total of at least eight beveled focusing edges.
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22. A method for irradiation of a tumor of a patient with charged particles, comprising the steps of:
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accelerating the charged particles with a synchrotron; monitoring a breathing cycle with a respiration sensor, said respiration sensor generating a respiration signal corresponding to the patient'"'"'s breathing cycle; rotating a platform holding the patient, wherein said platform rotates through at least one hundred eighty degrees during an irradiation period of the patient, using the respiration signal, delivering the charged particles to the tumor at a set point in the breathing cycle, wherein said step of delivering the charged particles at said set point of said breathing cycle occurs in greater than four rotation positions of said rotatable platform. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification