Method and device for obtaining a radiotherapy plan

A planning and pencil-beam technology, applied in the medical field, can solve problems such as ray occlusion, and achieve the effects of reducing incidence, increasing tumor dose, and reducing burden

Active Publication Date: 2020-03-24
SHANGHAI NEUSOFT MEDICAL TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the MLC includes blades of different widths, such as blades with a width of 6 mm and blades with a width of 3 mm, the traditional IMRT algorithm cannot be used to effectively block the rays irradiated to normal organs when formulating a radiotherapy plan

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  • Method and device for obtaining a radiotherapy plan
  • Method and device for obtaining a radiotherapy plan

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Embodiment Construction

[0023] The terminology used in this application is for the purpose of describing specific embodiments only, not to limit the application. As used in this application and the claims, the singular forms "a", "the" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein is meant to include any and all possible combinations of one or more of the associated listed items.

[0024] It should be understood that although the terms first, second, third, etc. may be used in this application to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the present application, first information may also be called second information, and similarly, second information may also be called first information. Dependin...

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Abstract

The invention provides a method and device for acquiring a radiation therapy plan. The method comprises the steps of acquiring a leaf flux pattern according to dose constraints; segmenting the leaf flux pattern into subfields; and acquiring a radiation therapy plan by using the subfields. According to the technical scheme of the invention, the radiation therapy plan can be acquired based on the leaf flux pattern rather than a pencil beam flux pattern, so that even if an MLC (Multi Leaf Collimator) comprises different widths of leaves, the MLC can be effectively used to shield rays irradiated on normal organs when the radiation therapy plan is used. The acquisition method of the radiation therapy plane can reduce the burden of doctors. The radiation therapy plan is more rational and reliable, the treatment quality is greatly improved, the dose for a tumor can be substantially increased, the dose for normal organs is reduced, the tumor control rate is improved, and the occurrence rate ofcomplications of the normal organs is reduced. In addition, the leaf flux pattern can be ensured to completely correspond to the MLC field in size, the controllability of the algorithm is improved, and the error is reduced.

Description

technical field [0001] The present application relates to the field of medical technology, in particular to a method and device for obtaining a radiotherapy plan. Background technique [0002] The vitality of tumors is usually stronger than that of normal organs. If radiation can cause damage to tumors, the damage to normal organs will be greater. Therefore, when formulating radiotherapy plans, it is necessary to allow tumors to receive as much dose as possible. Normal organs receive as little dose as possible. At present, the above functions can be realized by IMRT (Intensity-modulated radiation therapy, intensity-modulated radiation therapy, also called inverse intensity-modulated radiation therapy or conformal intensity-modulated radiation therapy) algorithm. [0003] In the IMRT algorithm, MLC (Multi Leaf Collimator, multi-leaf collimator, also known as multi-leaf grating, multi-leaf aperture, etc.) is usually used to block the rays irradiated to normal organs, so that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61N5/10
CPCA61N5/103
Inventor 姚鹏
Owner SHANGHAI NEUSOFT MEDICAL TECH LTD
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