System and method for planning of passive ion radiotherapy treatment
AssigneeRaySearch Laboratories AB
InventorsAlbin FREDRIKSSON, Erik ENGWALL
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Abstract
An ion-based radiotherapy plan for passive delivery of one or more beams (7) uses an optimization problem set up to allow variation in settings of the range modulating device, and/or settings of the aperture element during the delivery of the first beam, so that said plan will include modulation of the fluence of the beam during the delivery of the beam. The optimization problem is set up to allow variation of the settings of an aperture element (11), a range modulating device (9) during delivery of each beam, so that said plan will include modulation in depth of the beam during the delivery of the beam.
Claims17
A method of optimizing a radiotherapy plan for ion therapy designed to expose a patient to ion radiation delivered as at least a first beam delivered from a first beam angle, where each beam is shaped by passive devices including:
- a range modulating device (9) for creating a spread out Bragg peak, SOBP and an aperture element (11) for shaping the beam laterally, the method comprising:
- using an optimization problem set up to allow variation in settings of the range modulating device, and/or settings of the aperture element during the delivery of the first beam, so that the plan will include modulation of the fluence of the beam during the delivery of the beam.
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A radiotherapy delivery system for delivering a passive ion plan wherein ions are delivered to a patient in at least a first beam delivered from a first beam angle, the system comprising a range modulating device (9) for creating a spread-out Bragg peak, SOBP, and an aperture element (11) for shaping the beam laterally, the system further comprising control means (16) for varying at least one of:
- the settings of the aperture element (11) and the settings of the range modulating device (9) during delivery of the at least first beam, so as to modulate the fluence of the beam during delivery of the beam.
A computer program product for of optimizing a radiotherapy plan for ion therapy designed to expose a patient to ion radiation delivered as at least a first beam delivered from a first beam angle, where each beam is shaped by passive devices including:
- a range modulating device (9) for creating a spread out Bragg peak, SOBP and an aperture element (11) for shaping the beam laterally, wherein the computer program product comprises a non-transitory computer readable storage medium having program instructions embodied therewith, the program instructions being executable by a processor to perform a method comprising:
- using an optimization problem set up to allow variation in settings of the range modulating device, and/or settings of the aperture element during the delivery of the first beam, so that the plan will include modulation of the fluence of the beam during the delivery of the beam.
A computer system (51) for performing dose calculations for radiotherapy, comprising:
- a processor (53);
- and
- a memory (55) containing instructions that when executed by the processor causes the following step to be performed:
- optimizing a radiotherapy plan for ion therapy designed to expose a patient to ion radiation delivered as at least a first beam delivered from a first beam angle, where each beam is shaped by passive devices including:
- a range modulating device (9) for creating a spread out Bragg peak, SOBP and an aperture element (11) for shaping the beam laterally, wherein the optimization is done by using an optimization problem set up to allow variation in settings of the range modulating device, and/or settings of the aperture element during the delivery of the first beam, so that the plan will include modulation of the fluence of the beam during the delivery of the beam.
Dependencies are inferred from the claim text.