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System and method for dose calculation in generating radiation treatment plans

A computing system, radiation processing technology, applied in computing, radiation therapy, image data processing, etc., can solve problems such as difficulty

Active Publication Date: 2018-11-09
VARIAN MEDICAL SYST INT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In general, it is not easy to determine the optimal plan based only on the cost function
For example, the optimal solution to the cost function may not necessarily describe the clinically best balance between quality measures, or the dose distribution may have some undesired characteristics that are difficult to express as quality measures

Method used

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  • System and method for dose calculation in generating radiation treatment plans
  • System and method for dose calculation in generating radiation treatment plans
  • System and method for dose calculation in generating radiation treatment plans

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Embodiment Construction

[0022] Reference will now be made in detail to various embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. While described in conjunction with these embodiments, it will be understood that they are not intended to limit the disclosure to these embodiments. On the contrary, the disclosure is intended to cover alternatives, modifications and equivalents, which may be included within the spirit and scope of the disclosure as defined by the appended claims. Additionally, in the following detailed description of the present disclosure, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure. However, it is understood that the present disclosure may be practiced without these specific details. In other instances, well-known methods, procedures, components and circuits have not been described in detail so as not to unnecessarily obscure aspects of the present disclosure.

[002...

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Abstract

The invention discloses a system and method for dose calculation in generating radiation treatment plans. A first dose calculated using a first set of fluence maps and a first (faster) dose predictionmodel is accessed. A second fluence map is accessed. The second fluence map is projected onto the first set of fluence maps to determine a set of scalars and a residual value. When the residual valuesatisfies a criterion, a second dose is calculated using the first dose prediction model, the set of scalars, and the second fluence map. When the residual value does not satisfy the criterion, the second dose is calculated using a second (more accurate) dose prediction model and the second fluence map.

Description

technical field [0001] The present disclosure generally relates to generation of radiation treatment plans. Background technique [0002] The use of radiation therapy to treat cancer is well known. In general, radiation therapy involves directing beams of high-energy proton, photon, or electron radiation ("therapeutic radiation") into a target volume (eg, a tumor or lesion). [0003] Before a patient is treated with radiation, a treatment plan specific to that patient is developed. By using simulations and optimizations based on past experience, the plan defines aspects of the treatment. For example, for intensity modulated radiation therapy (IMRT), the plan may specify an appropriate beam type (eg, flat filterless type) and an appropriate beam energy. Other parts of the plan may specify, for example, the angle of the beam relative to the patient, beam shape, placement of bolus and shielding, and the like. In general, the goal of a treatment plan is to deliver sufficient...

Claims

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Application Information

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IPC IPC(8): A61N5/10
CPCA61N5/103A61N5/1045A61N2005/1041A61N5/1031A61N5/1036A61N5/1038G06T7/0012
Inventor E·库塞拉J·诺德J·皮里P·尼梅拉
Owner VARIAN MEDICAL SYST INT AG
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