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Radiotherapy equipment alignment device and alignment method based on acousto-optic monitoring

A technology for aligning devices and equipment, applied in the fields of medical devices and precision instruments, can solve the problems of destroying normal tissues, difficult to guarantee the effect of radiotherapy, and adverse effects on the human body.

Inactive Publication Date: 2019-03-08
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of radiotherapy, if the radiation hits the normal tissue, it will destroy the normal tissue and have an adverse effect on the human body. If the lesion is not fully irradiated, the effect of radiotherapy is difficult to be guaranteed. Key technical links

Method used

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  • Radiotherapy equipment alignment device and alignment method based on acousto-optic monitoring

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specific Embodiment 1

[0026] This embodiment is an embodiment of an alignment device for radiotherapy equipment based on acousto-optic monitoring.

[0027] The structure diagram of the radiotherapy equipment alignment device based on acousto-optic monitoring in this embodiment is as follows figure 1 As shown; the radiotherapy equipment alignment device based on acousto-optic monitoring is composed of a photoacoustic generation monitoring cavity 1 and an acoustic absorption reflection surface 2;

[0028] The photoacoustic generation monitoring cavity 1 includes a cavity 11, an optical fiber 12 with a 45° semi-reflective and semi-transparent end face is inserted from the middle of the cavity, and a plane reflector 13 arranged at the front end of the optical fiber 12 is arranged on the side of the optical fiber 12 and the cavity 11 The image sensor 14 at the bottom, the vibrating membrane 15 arranged on the side of the optical fiber 12 and the top of the cavity 11, and the sound source 16 arranged nex...

specific Embodiment 2

[0031] This embodiment is an embodiment of a radiotherapy equipment alignment method based on acousto-optic monitoring.

[0032] The radiotherapy equipment alignment method based on acousto-optic monitoring in this embodiment is implemented on the radiotherapy equipment alignment device based on acousto-optic monitoring described in the first specific embodiment. The radiotherapy equipment alignment method based on acousto-optic monitoring includes the following steps :

[0033] Step a, when the acoustic absorbing reflective surface 2 is not provided, the image sensor 14 obtains an interference pattern;

[0034] Step b, setting the acoustic absorption reflection surface 2, turning on the sound source 16, and the image sensor 14 obtains a set of interference patterns;

[0035] Step c, using the interference pattern obtained in step a and each interference image in a group of interference patterns obtained in step b to perform consistency evaluation; the consistency evaluation ...

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Abstract

The invention discloses a radiotherapy equipment alignment device and a radiotherapy equipment alignment method based on acousto-optical monitoring, which belong to the technical field of medical equipment and precise instruments. The radiotherapy equipment alignment device is composed of an opto-acoustic generation monitoring cavity and an acoustic absorption reflecting surface, wherein the opto-acoustic generation monitoring cavity comprises a cavity body, an optical fiber, a plane reflector, an image sensor, a vibrating membrane and a sound source; and the acoustic absorption reflecting surface comprises a sound absorption layer and a sound reflecting layer. According o the radiotherapy equipment alignment method, the image sensor obtains an interference pattern as a reference when the acoustic absorption reflecting surface is not set, and the alignment is realized through judging a change rule of the interference pattern after setting the acoustic absorption reflecting surface and turning on the sound source until an extreme value reflecting the change rule of the interference pattern does not exceed a threshold value. The radiotherapy equipment alignment device is simple in structure, the radiotherapy equipment alignment method is simple in step, both the device and the method can complete six degrees-of-freedom alignment by means of an index, and are high in alignment precision.

Description

technical field [0001] The radiotherapy equipment alignment device and alignment method based on acousto-optic monitoring of the present invention belong to the technical field of medical equipment and precision instruments. Background technique [0002] Radiation therapy is radiation therapy, one of the three major treatment methods for cancer. It uses various energy rays to irradiate tumors to inhibit and kill cancer cells. In the process of radiotherapy, if the radiation hits the normal tissue, it will destroy the normal tissue and have an adverse effect on the human body. If the lesion is not fully irradiated, the effect of radiotherapy is difficult to guarantee. Therefore, it is necessary to ensure that the focus of the radiotherapy is aimed Key technical links. Contents of the invention [0003] In order to achieve the technical purpose of aligning lesions, the present invention provides an alignment device and alignment method for radiotherapy equipment based on ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61N5/10
CPCA61N5/1028A61N5/1048A61N2005/1092
Inventor 赵烟桥于博洋樊琪
Owner HARBIN UNIV OF SCI & TECH