DETERMINATION OF CONTROL PARAMETERS FOR IRRADIATION OF A MOVING TARGET VOLUME IN A BODY
First Claim
1. Method of determining a control parameter of a system for irradiating a predetermined target volume in a body with a particle beam, the system being constructed to direct the particle beam at a multiplicity of target points in the target volume in succession in order to produce at each of the target points a predetermined dose distribution in a region around the target point, wherein the control parameter controls the extent of an overlap of the dose distribution of a first target point with the dose distributions of neighbouring target points, comprising the following steps:
- determination of a movement parameter which quantitatively characterises the movement of the body at the first target point;
determination of the control parameter in dependence on the movement parameter.
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Accused Products
Abstract
Abstract: A control parameter is determined for a system (10) for irradiating a predetermined target volume in a body (77) with a particle beam (75). The system is constructed to direct the particle beam at a multiplicity of target points (30) in the target volume in succession in order to produce at, each of the target points a predetermined dose distribution (42) in a region around the target point. The control parameter controls the extent of an overlap of the dose distribution of a first target point with the dose distributions of neighbouring target points. For determination of the control parameter, there is first determined (94) a movement parameter which quantitatively characterises the movement of the body at the first target point. The control parameter is determined (95) in dependence on the movement parameter.
57 Citations
25 Claims
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1. Method of determining a control parameter of a system for irradiating a predetermined target volume in a body with a particle beam, the system being constructed to direct the particle beam at a multiplicity of target points in the target volume in succession in order to produce at each of the target points a predetermined dose distribution in a region around the target point, wherein the control parameter controls the extent of an overlap of the dose distribution of a first target point with the dose distributions of neighbouring target points, comprising the following steps:
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determination of a movement parameter which quantitatively characterises the movement of the body at the first target point; determination of the control parameter in dependence on the movement parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. Apparatus for determination of a control parameter of a system for irradiating a predetermined target volume in a body with a particle beam, the system being constructed to direct the particle beam at a multiplicity of target points in the target volume in succession in order to produce at each of the target points a predetermined dose distribution in a region around the target point, wherein the control parameter controls the extent of an overlap of the dose distribution of a first target point with the dose distributions of neighbouring target points, having the following features:
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an input for receiving a movement parameter which characterises the movement of the body at the first target point; a device for determination of the control parameter in dependence on the movement parameter. - View Dependent Claims (15, 16, 17, 18, 19, 20, 22, 23, 24, 25)
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21. (canceled)
Specification