ASSEMBLY AND METHOD FOR CONFORMAL PARTICLE RADIATION THERAPY OF A MOVING TARGET
First Claim
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1. A particle therapy assembly for irradiating a moving target in a patient with a particle beam, said particle therapy assembly comprisinga particle beam generator for generating a particle beam;
- a scanning device for scanning said target with said particle beam, said scanning device comprisingone or more scanning magnets for scanning the particle beam over an X-Y scanning plane;
scanning control means configured for scanning the particle beam by sequentially moving the particle beam to multiple scanning positions situated in said X-Y scanning plane;
a patient support device for positioning said patient in an irradiation treatment position;
an imaging device configured for acquiring an actual position of said moving target while the patient is in said irradiation treatment position, said imaging device comprising a display and displaying controls configured for displaying, in real time, information indicative of the actual position of said moving target and information indicative of a prescribed target position on said display;
breath holding means for holding a breath of said patient while said patient is positioned in said irradiation treatment position;
means for actuating said breath holding means to start holding the patient'"'"'s breath;
means for starting an irradiation of the target with the particle beam.
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Abstract
Methods and assembly for delivering a particle beam dose to a moving target are provided. The assembly comprises breath holding means for holding a patients breath during the delivery of the particle beam dose. With the assembly and method of invention, visualization means are provided to the patient to visualize the moving target such that the patient can actively contribute to the target positioning before actuating the breath holding means and starting the delivery of the particle beam.
29 Citations
24 Claims
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1. A particle therapy assembly for irradiating a moving target in a patient with a particle beam, said particle therapy assembly comprising
a particle beam generator for generating a particle beam; -
a scanning device for scanning said target with said particle beam, said scanning device comprising one or more scanning magnets for scanning the particle beam over an X-Y scanning plane; scanning control means configured for scanning the particle beam by sequentially moving the particle beam to multiple scanning positions situated in said X-Y scanning plane; a patient support device for positioning said patient in an irradiation treatment position; an imaging device configured for acquiring an actual position of said moving target while the patient is in said irradiation treatment position, said imaging device comprising a display and displaying controls configured for displaying, in real time, information indicative of the actual position of said moving target and information indicative of a prescribed target position on said display; breath holding means for holding a breath of said patient while said patient is positioned in said irradiation treatment position; means for actuating said breath holding means to start holding the patient'"'"'s breath; means for starting an irradiation of the target with the particle beam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A particle therapy assembly for irradiating a moving target of a patient with a particle beam, said assembly comprising
a particle beam generator for generating a particle beam; -
a scanning device for scanning said target with said particle beam, said scanning device comprising one or more scanning magnets for scanning the particle beam over an X-Y scanning plane; scanning control means configured for scanning the particle beam by sequentially moving the beam to multiple scanning positions situated in said X-Y scanning plane; an energy filter for modulating an energy of the particle beam as function of said scanning positions, wherein said energy filter is located downstream of said one or more scanning magnets, said energy filter having a plurality of filtering elements, each of said plurality of filtering elements being configured for modulating the energy of the particle beam and being associated to one of said scanning positions of the particle beam in the X-Y plane. a patient support device for positioning said patient in an irradiation treatment position; an imaging device configured for acquiring an actual position of said moving target while the patient is in said irradiation treatment position, said imaging device comprising a display and displaying controls configured for displaying, in real time, information indicative of the actual position of said moving target and information indicative of a prescribed target position on said display; breath holding means for holding a breath of said patient while said patient is positioned in said irradiation treatment position; means for actuating the breath holding means to start holding the patients breath; means for starting the irradiation of the target with the particle beam. - View Dependent Claims (13, 14)
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15. A particle therapy assembly for irradiating a moving target in a patient with a particle beam, said assembly comprising
a particle beam generator for generating a particle beam having; -
a scanning device for scanning said target with said particle beam; a patient support device for positioning said patient in an irradiation treatment position; an imaging device configured for acquiring an actual position of said moving target while the patient is in said irradiation treatment position, said imaging device comprising a display and displaying controls configured for displaying, in real time, information indicative of the actual position of said moving target and information indicative of a prescribed target position on said display; breath holding means for holding a breath of said patient while said patient is positioned in said irradiation treatment position; means for actuating said breath holding means to start holding the patients breath; means for starting an irradiation of the target with the particle beam. - View Dependent Claims (16)
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17. A method for irradiating a moving target in a patient with a particle beam, said method comprising the steps of
a. positioning said patient in an irradiation treatment position; -
b. providing breath holding means for holding the patient'"'"'s breath; c. providing an imaging device configured for acquiring an actual position of said moving target while the patient is in said irradiation treatment position, said imaging device comprising a display and displaying controls configured for displaying, in real time, information indicative of the actual position of said moving target and information indicative of a prescribed target position on said display; d. positioning said display such that the patient can visually observe the display while said patient is located in said irradiation treatment position; e. displaying, in real time, the information indicative of the actual target position together with the information indicative of the prescribed target position on said display; f. managing the patient'"'"'s respiration such that the actual target position matches the prescribed target position within a tolerance, said managing being performed based on said information indicative of the actual target position and said information indicative of said prescribed target position; g. actuating the breath holding means to start holding the patient'"'"'s breath when said actual target position matches the prescribed target position within a tolerance; h. starting the irradiation of the target with said particle beam when said actual target position matches the prescribed target position within said tolerance. - View Dependent Claims (18)
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19. A method for irradiating a moving target in a patient with a particle beam using a particle therapy assembly comprising
a particle beam generator for generating a particle beam; -
a scanning device for scanning the target with the particle beam, said scanning device is comprising one or more scanning magnets for scanning the particle beam over an X-Y scanning plane; scanning control means configured for scanning the particle beam by sequentially moving the particle beam to multiple scanning positions situated in said X-Y scanning plane; said method comprising the steps of a. positioning said patient in an irradiation treatment position; b. providing breath holding means for holding the patient'"'"'s breath; c. providing an imaging device for acquiring and visualizing an actual target position of said moving target while the patient is in said treatment position and said imaging device comprises a display and displaying controls configured for displaying, in real time, information indicative of the actual target position and information indicative of a prescribed target position; d. positioning said display such that the patient can visually observe the display while said patient is located in said irradiation treatment position; e. displaying, in real time, the information indicative of the actual target position together with the information indicative of the prescribed target position on said display; f. managing the patient'"'"'s respiratory such that the actual target position matches the prescribed target position within a tolerance, said managing being performed based on said information indicative of the actual target position and said information indicative of said prescribed target position; g. actuating the breath holding means to start holding the patients breath when said actual target position matches the prescribed target position within a tolerance; h. starting the irradiation of the target when said actual target position matches the prescribed target position within said tolerance. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification