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Method and device for generating dynamic wedge plate control points

A wedge-shaped plate and control point technology, which is applied in computer tomography scanners, echo tomography and other directions, can solve problems such as the inability of dynamic wedge-shaped plates to match the shape and depth of tumors in different patients, and the inability to accurately characterize the actual situation of the tumor. Estimate accurate effect

Active Publication Date: 2018-04-03
SHANGHAI UNITED IMAGING HEALTHCARE
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Problems solved by technology

[0011] Moreover, when the shape of the tumor is irregular, the actual situation of the tumor cannot be accurately represented only by the two parameters of the size and angle of the wedge-shaped field. Therefore, the traditional dynamic wedge plate cannot match the tumor shape and depth of different patients, and cannot Obtain user-desired isodose curves on tumors

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  • Method and device for generating dynamic wedge plate control points
  • Method and device for generating dynamic wedge plate control points
  • Method and device for generating dynamic wedge plate control points

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[0041] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0042] In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways than those described here, so the present invention is not limited by the specific embodiments disclosed below.

[0043] This application mainly solves the following problems. As mentioned in the background art, if the shape of the tumor on the cross section is irregular, it is impossible to obtain a more uniform dose on the tumor with the traditional enhanced dynamic wedge (EDW) method. In the present invention, the target isodose line (such as image 3 center line in ), and use this as the optimization target to obtain the sub-field table for treat...

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Abstract

The invention provides a method for generating control points of a dynamic wedge plate, comprising: determining a target isodose curve and a target dose; generating a one-dimensional fluence distribution according to the target isodose curve and the target dose; The dose is optimized for the one-dimensional fluence distribution, and the control points of the dynamic wedge are generated according to the optimized one-dimensional fluence distribution.

Description

technical field [0001] The invention mainly relates to the field of radiotherapy, in particular to a method and a device for generating control points of a dynamic wedge plate. Background technique [0002] In 3D-CRT treatment, due to the different distances from the tumor surface to the body surface in the direction of the beam, the shape of the tumor is also different, so it is necessary to install a physical wedge between the radiation source and the body surface to adjust the intensity of the radiation. The distribution is adjusted. Physical wedges are usually made of high-density sheet metal, and the profile of the wedge is thicker on one side and thinner on the other. After the rays pass through the wedge-shaped plate, a certain dose distribution is formed in a uniform water mold. [0003] Dynamic wedge is a virtual wedge technology developed on the basis of physical wedge (in this paper, dynamic wedge and virtual wedge are referred to interchangeably). It utilizes ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/03
Inventor 王伟远李贵周婧劼
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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