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The detection method of isocenter point and sphere radius of linear accelerator

A linear accelerator, isocenter technology, applied in instruments, measuring devices, optical devices, etc., can solve problems such as inability to guarantee well, and achieve the effect of improving detection efficiency and accuracy, simplifying detection process, and high computing efficiency

Inactive Publication Date: 2017-11-21
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the related technology is still mainly based on manual visual inspection, which cannot ensure that the vertical distance between the isocenter point and each ray is within the required range, and needs to be improved

Method used

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  • The detection method of isocenter point and sphere radius of linear accelerator
  • The detection method of isocenter point and sphere radius of linear accelerator
  • The detection method of isocenter point and sphere radius of linear accelerator

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Embodiment Construction

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0034] In the present invention, unless otherwise clearly specified...

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Abstract

The invention discloses a method for detecting the isocenter point and sphere radius of a linear accelerator, comprising the following steps: collecting the spatial coordinates of a plurality of infrared markers when the gantry rotates to a preset angle; respectively recording the starting points of multiple groups of ray vectors and the spatial coordinate position of the end point; obtain multiple sets of ray vectors; select the point set of the sphere with the theoretical isocenter as the center and the preset threshold as the radius; calculate the isocenter point and the sphere according to the multiple sets of ray vectors and sphere Radius to get the linac's isocenter and sphere radius. The detection method of the embodiment of the present invention improves the detection efficiency and precision, avoids the influence of human factors on the detection result, and is simple and easy to implement.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a method for detecting the isocenter of a linear accelerator and the radius of a sphere. Background technique [0002] Radiation therapy maximizes the projected dose to the tumor area and reduces the received dose to surrounding normal tissues through external beams, so as to kill tumor cells to the greatest extent and reduce the incidence of normal tissues. With the advancement of radiotherapy technology, the medical linear accelerator has developed from the original single-energy radiation to the same source multi-energy, from the original kilovolt-level X-ray machine to the medical electron accelerator with MV-level ray source, and the energy is getting higher and higher. Therefore, in order to better achieve conformal radiotherapy and intensity-modulated radiotherapy, the development trend of multi-leaf collimators for medical linear accelerators is characterized by...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00G01B11/08
Inventor 叶佩青张翔张辉
Owner TSINGHUA UNIV
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