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Planning system for planning a volumetric modulated arc radiation therapy procedure

A radiation therapy and planning system technology, applied in the field of radiation therapy systems, can solve the problem that the optimization algorithm does not find the best treatment parameters, etc.

Pending Publication Date: 2020-11-13
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This known generation of treatment plans has the disadvantage that the optimization algorithm may not find the optimal treatment parameters, since it usually stops when no significant improvement can be obtained anymore
Furthermore, optimization algorithms are known to tend to iterate towards very noisy (i.e., for example, with strong oscillations) disposition parameter solutions

Method used

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  • Planning system for planning a volumetric modulated arc radiation therapy procedure
  • Planning system for planning a volumetric modulated arc radiation therapy procedure
  • Planning system for planning a volumetric modulated arc radiation therapy procedure

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Experimental program
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Embodiment Construction

[0032] figure 1 An embodiment of a radiation therapy system as a VMAT system is shown schematically and exemplarily. The VMAT system 1 comprises a radiation source 2 configured to emit a radiation beam 3 for treating an object 4 . In this embodiment, the subject 4 is a human patient lying on a support module 30 such as a patient table. In another embodiment, the subject can also be an animal. The radiation source 2 is attached to a gantry 5 configured to rotate the radiation source 2 around the object 4 in the direction indicated by arrow 17 in order to apply the radiation beam 3 to the object 4 in different directions. Furthermore, the radiation source 2 comprises an MLC for shaping the radiation beam 3 . The VMAT system 1 also comprises a control system 6 having a planning system 7 for planning a radiation therapy procedure to be performed by the VMAT system 1 and a control for controlling at least the radiation source 2 and the gantry 5 according to the planned radiation...

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Abstract

The invention relates to a planning system (7) for planning a volumetric modulated arc radiation therapy procedure, wherein the volumetric modulated arc radiation therapy procedure includes rotating aradiation source (2), which is configured to emit a radiation beam (3) for treating a subject (4), along an arc around the subject, in order to apply the radiation beam to the subject in different treatment directions. A sequence of sub-arcs groups is provided, wherein a respective sub-arcs group comprises several sub-arcs of the arc, which are evenly distributed along the arc, wherein a treatment plan is generated by sequentially determining for each sub-arcs group treatment parameters, which define a property of the radiation beam, in the provided sequence. Determining the treatment parameters by using this sequence leads to an increased likelihood that really an optimal treatment plan is generated.

Description

technical field [0001] The present invention relates to a planning system, method and computer program for planning volume modulated arc radiation therapy procedures. The invention also relates to a radiation therapy system comprising a planning system. Background technique [0002] The article "Volumetric modulated arc therapy: IMRT in a single gantryarc" by K. Otto (Medical Physics, Vol. 35, pp. 310-317 (2007)) discloses a Volume Modulated Arc Therapy (VMAT) system, A radiation source is included for emitting radiation beams for treating the object, and a rotation unit is for rotating the radiation source around the object to apply the radiation beams to the object in different directions. The radiation source comprises a multi-leaf collimator (MLC) for dynamically shaping the radiation beam, while the rotary unit rotates around the object and the radiation source continuously emits the radiation beam. The trajectory along which a radiation source follows its rotation ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/10A61B6/02
CPCA61N5/103A61N5/1081A61N5/1045
Inventor H·S·黑泽T·维克R·J·威斯A·A·伊索拉C·诺伊基兴M·F·巴尔
Owner KONINKLJIJKE PHILIPS NV