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Light emission field consistency measuring system and method

A measurement system and consistency technology, which is applied in the field of optical field consistency measurement system, can solve problems such as low accuracy of intensity points, one-time use pollution, and great influence of radiotherapy equipment, so as to save measurement time, reduce measurement cost, The effect of easy operation

Pending Publication Date: 2019-01-25
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the accuracy of the intensity point of 50% of the artificially marked light field is not high, which has a great impact on the follow-up radiotherapy equipment in stereotactic radiotherapy
At the same time, the one-time use of film, pollution and waste are also serious problems in the use of radiotherapy equipment

Method used

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  • Light emission field consistency measuring system and method
  • Light emission field consistency measuring system and method
  • Light emission field consistency measuring system and method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Figure 1a It is a schematic structural diagram of the optical field consistency measurement system provided in Embodiment 1 of the present invention. The optical field consistency measurement system provided in this embodiment can be used to perform consistency measurements on the optical field edge and the optical field edge of a medical electron linear accelerator. Measurement. Such as Figure 1a As shown, the optical field consistency measurement system includes: a light source, a radiation emitter, at least one dual-sensitive detector 120 and an edge computing module, wherein the light source and the radiation emitter are located in the treatment head 110 of the medical electron linear accelerator.

[0024] The dual-sensitive detector 120 is located on the opposite side of the light source and the ray emitter, and is used to convert the visible light signal emitted by the light source into a first electrical signal, and convert the ray emitted by the ray emitter is...

Embodiment 2

[0045] Figure 2a It is a schematic structural diagram of the edge calculation module in the optical field consistency measurement system provided by the second embodiment of the present invention. This embodiment is based on the above-mentioned embodiment, and the edge calculation module in the optical field consistency measurement system is embodied . Such as Figure 2a As shown, the edge calculation module 140 includes an analog-to-digital conversion unit 141, an edge determination unit 142 and an edge matching unit 143, wherein:

[0046] The analog-to-digital conversion unit 141 is configured to respectively convert the first electrical signal and the second electrical signal into corresponding digital signals;

[0047] The edge determination unit 142 is used to count the digital signals corresponding to each photoreceptor, determine the digital signal value corresponding to the edge according to the preset coefficient, and determine the correspondence between the electr...

Embodiment 3

[0070] image 3 It is a flow chart of the optical field consistency measurement method provided by the third embodiment of the present invention. This embodiment can be applied to the optical field consistency measurement system provided by the above-mentioned embodiments of the present invention. situation. Such as image 3 As shown, the method specifically includes:

[0071] S310. Control the light source to send out a visible light signal, acquire a first electrical signal converted from the visible light signal by a dual-sensitive detector, and determine a light field edge according to the first electrical signal.

[0072] In this embodiment, the light field edge of the visible light emitted by the light source and the field edge of the radiation emitted by the ray emitter need to be measured respectively, and then the consistency of the light field is determined according to the light field edge and the positions of the light field edge.

[0073] Optionally, the light ...

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Abstract

The embodiment of the invention discloses a light emission field consistency measuring system and method. The system comprises a light source, a ray emitter, at least one double-sensitive detector andan edge calculation module. The double-sensitive detector locats on the opposite side of the light source and the ray emitter and is used to convert the visible light signal emitted from the light source into a first electrical signal and convert the radiation emitted from the ray emitter into a second electrical signal; and the edge calculation module is connected with the double-sensitive detector, and is used for determining the optical field edge of the visible light according to the first electrical signal, determining the radiation field edge of the ray according to the second electrical signal, and determining the consistency of the optical field edge and the radiation field edge according to the optical field edge and the radiation field edge. The optical field edge calculation module is connected with the dual sensitive detector, and is used for determining the optical field edge of the visible light according to the first electrical signal. The system provided by the embodiment of the invention improves the accuracy of the light emission field consistency measurement, reduces the measurement cost, saves the measurement time, and uses the double-sensitive detector to detect the visible light signal and the ray signal, so that the double-field consistency measurement system can be used repeatedly for many times.

Description

technical field [0001] Embodiments of the present invention relate to the field of medical equipment, and in particular, to a system and method for measuring light field consistency. Background technique [0002] Radiation therapy and diagnostic techniques have become the main means of tumor screening and treatment. For radiation therapy, for example, medical electron linear accelerators are the main treatment equipment for external beam radiation therapy today. Before or during radiotherapy for a patient, it is necessary to use medical imaging equipment to image the patient in order to obtain accurate tumor location and shape. Position the patient before delivering radiation therapy and improve treatment efficiency by conforming the beam to precisely match the shape of the tumor during radiation therapy. If the range of the radiation field is not consistent with the expected range of irradiation, some parts of the target area will be missed for irradiation, and in serious...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/00
CPCA61B6/582
Inventor 薛舟章卫傅费超J·墨子
Owner SHANGHAI UNITED IMAGING HEALTHCARE