Device And Method For Particle Therapy Monitoring And Verification
First Claim
1. A device for monitoring and verification of treatment beam delivery with a particle radiation apparatus, said treatment beam comprising one or more treatment sub beams corresponding each to a treatment beam layer, each of said treatment beam layers being characterized by a set of treatment beam layer parameters, said particle radiation apparatus being configurable for a given set of treatment beam layer parameters, said device comprising:
- an acquirer configured to acquire treatment beam layer parameters for each said treatment beam layer;
an electronic 2D detector device configured to measure 2D responses of said treatment beam layer in a plane essentially perpendicular to the central axis of said treatment beam;
a 2D detector response predicting module configured to determine predicted 2D detector responses for each of said treatment beam layers to be delivered with said particle radiation apparatus configured with said given set of treatment beam layer parameters;
a memory to store the predicted 2D detector responses of each said treatment beam layer;
an acquirer configured to acquire in real time the 2D detector responses caused by said treatment beam layer delivered by said particle radiation apparatus being configured with said given set of treatment beam layer parameters;
a 2D detector response comparison module configured to perform a comparison between the measured 2D detector responses and the corresponding said predicted 2D detector responses; and
an error handling module configured to signal the difference between said measured 2D detector responses and said predicted 2D detector responses.
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Accused Products
Abstract
The present invention relates to a device and method for monitoring and verification of the quality of a radiation treatment beam in conformal radiation therapy, and in particular for IMPT (Intensity Modulated Particle Therapy) applications. The device comprises a 2D electronic detector measuring 2D responses to the delivered treatment beam. These 2D responses are compared with predicted 2D responses and differences in responses are signalled. Based on the measured 2D responses the effectively delivered 3D dose distribution in the target can be reconstructed.
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Citations
20 Claims
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1. A device for monitoring and verification of treatment beam delivery with a particle radiation apparatus, said treatment beam comprising one or more treatment sub beams corresponding each to a treatment beam layer, each of said treatment beam layers being characterized by a set of treatment beam layer parameters, said particle radiation apparatus being configurable for a given set of treatment beam layer parameters, said device comprising:
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an acquirer configured to acquire treatment beam layer parameters for each said treatment beam layer; an electronic 2D detector device configured to measure 2D responses of said treatment beam layer in a plane essentially perpendicular to the central axis of said treatment beam; a 2D detector response predicting module configured to determine predicted 2D detector responses for each of said treatment beam layers to be delivered with said particle radiation apparatus configured with said given set of treatment beam layer parameters; a memory to store the predicted 2D detector responses of each said treatment beam layer; an acquirer configured to acquire in real time the 2D detector responses caused by said treatment beam layer delivered by said particle radiation apparatus being configured with said given set of treatment beam layer parameters; a 2D detector response comparison module configured to perform a comparison between the measured 2D detector responses and the corresponding said predicted 2D detector responses; and an error handling module configured to signal the difference between said measured 2D detector responses and said predicted 2D detector responses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 20)
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15. A method for verifying treatment beam delivery from a particle radiation apparatus prior to patient irradiation, said method comprising:
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providing a particle radiation apparatus for delivery of a treatment beam, said treatment beam comprising one or more treatment sub beams, each of said treatment sub beams being defined as a treatment beam layer corresponding to an irradiation layer and comprising particles having essentially the same energy, each of said treatment beam layers being characterized by a set of treatment beam layer parameters, said particle radiation apparatus being configurable for a given set of treatment beam layer parameters, said device comprising; providing an acquirer configured to acquire prescribed treatment beam layer parameters; providing a 2D detector device configured to provide a measured 2D detector response of said treatment beam layer in a plane perpendicular to the central axis of said treatment beam; for each beam layer, determining a predicted 2D detector response for said prescribed treatment beam layer parameters; delivering said treatment beam layer with said particle radiation apparatus being configured with said prescribed treatment beam layer parameters; measuring the 2D detector responses caused by the treatment beam layer delivered by said particle radiation apparatus; performing a comparison between the measured 2D detector response and the corresponding predicted 2D detector response; and signalling difference between said measured 2D detector response and said predicted 2D detector response. - View Dependent Claims (16, 17, 18, 19)
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Specification