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Initialization method for multi-leaf collimator and radiation therapy system

A multi-leaf collimator and initialization method technology, which is applied in the medical field, can solve the problems of long time consumption and achieve the effect of short initialization time

Active Publication Date: 2018-06-29
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In the traditional initialization process, all initialization processes must be performed serially, that is, the next blade can only be initialized after the initialization of one blade is completed, which takes a long time

Method used

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  • Initialization method for multi-leaf collimator and radiation therapy system
  • Initialization method for multi-leaf collimator and radiation therapy system
  • Initialization method for multi-leaf collimator and radiation therapy system

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Embodiment Construction

[0074] In order to make the object, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the technical solution of the present invention, and are not intended to limit the technical solution of the present invention.

[0075] see figure 1 , an embodiment of the present invention provides a radiotherapy system 100 , and the radiotherapy system 100 includes a linear accelerator 10 and a bed assembly 20 . The linear accelerator 10 is used to generate beams (electron beams or X-rays) of high energy level (such as megavolt level) so as to treat the target area (tumor area), and it includes a frame 11 and is relatively arranged on the frame 11. The treatment head 12 and the electronic portal imaging device 13 (Electronic Por...

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Abstract

The invention provides an initialization method for a multi-leaf collimator. The initialization method comprises the following steps: sequentially moving leaves along the opening direction till corresponding leaf switches are triggered, carrying out moving towards the reverse direction for a section of distance and then stopping moving, during the process of moving the leaves towards the closing direction, recording the a main coder value and an auxiliary coder value corresponding to each leaf when the leaf triggers the corresponding leaf switch, and a main coder value and an auxiliary coder value corresponding to each leaf when the leaf stops; and by utilizing the main coder value and the auxiliary coder value corresponding to each leaf when the leaf triggers the corresponding leaf switchand the main coder value and the auxiliary coder value corresponding to each leaf when the leaf stops, calculating an initial value of a main code and an initial value of an auxiliary coder corresponding to the leaf. The zero position of the leaf determined by the method provided by the invention is more accurate. The invention further provides a radiation therapy system and a computer readable storage medium.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to an initialization method of a multi-leaf collimator, a radiotherapy system and a computer-readable storage medium. Background technique [0002] The multi-leaf collimator is an important component of the radiation head of medical radiation therapy equipment. The multi-leaf collimator usually includes a box body arranged opposite to each other and two sets of leaves arranged in the box body. A radiation field of a specific shape is formed by the movement of the two sets of leaves so as to perform radiotherapy on the tumor area. Therefore, whether the blade position is accurate or not has a great influence on radiation therapy. [0003] The absolute position of the blades in the radiation therapy system depends on the absolute position of the cabinet in the radiation therapy system and the relative position of the blades to the cabinet. In order to ensure that the leaves can acc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/10
CPCA61N5/1045A61N5/1075
Inventor 马波琪佟留住李亚男
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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