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US 2011/0297850 A1Published application
Device and method for particle beam delivery
AssigneeIon Beam Applications S.A.
InventorsYves Claereboudt, Michel Closset
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AssigneeIon Beam Applications S.A.
InventorsYves Claereboudt, Michel Closset
Estimating the term…
The present invention relates to a particle therapy system that comprises a spot scanning system to irradiate with a particle beam a plurality of spots in a layer of a target with prescribed spot doses for each spot of the layer. The therapy system is further adapted to perform multiple paintings of the layer and to deliver partial spot doses to selected spots of the layer during each painting time so that each spot of the layer will have received its prescribed dose after completion of the multiple paintings. The therapy system further comprises means for setting the partial spot doses and the number of times that a spot will be selected for irradiation in the course of the multiple paintings to such values that any spot of the layer will never have to be irradiated with a partial dose which would fall below a minimum dose deliverable by the system, and this whatever the number chosen for the number of layer paintings. The invention also relates to a corresponding irradiation method.
A particle therapy system (10) for irradiating with a particle beam (50) a plurality of spots (70) in a layer (65) of a target (60), said system (10) comprising means (30) for scanning the particle beam over said layer a prescribed number of layer scanning times (Nlayer_painting), means for irradiating selected spots of said layer with partial spot doses (Dspot_partial) in the course of each said layer scanning time so that each spot respectively receives a prescribed total spot dose (Dspot) after completion of the prescribed number of layer scanning times, said system (10) being only able to irradiate a spot with a spot dose which is larger than or equal to a minimum spot dose (Dmin), characterized in that the system further comprises means (45) for determining, for each spot (70) of said layer, the partial spot doses (Dspot_partial) and a number of times that said spot is to be selected for irradiation (Nspot_painting), according to both the following rules a) and b):
A method for irradiating with a particle beam (50) a plurality of spots in a layer (65) of a target (60), said method comprising the steps of:
Dependencies are inferred from the claim text.