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Method for tracking position of irradiant source

A radiation source and time measurement technology, applied in the field of radiation sources, can solve problems such as high computing power and not allowing radiation sources to move

Pending Publication Date: 2021-04-16
COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, this method requires high computing power
Furthermore, the method does not allow to consider the motion of the radiation source in a stationary environment

Method used

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  • Method for tracking position of irradiant source
  • Method for tracking position of irradiant source
  • Method for tracking position of irradiant source

Examples

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Embodiment Construction

[0071] Figure 1A A measuring device 1 is shown which allows the implementation of the invention. The measurement device includes a gamma imager 2 or a gamma camera. Gamma imagers are configured to detect ionizing electromagnetic radiation of the X-ray or gamma-ray type, typically at energies between 10keV and 10MeV. A gamma imager includes pixels, each pixel corresponding to a fundamental spatial region of the field of view. The pixels are located in the detection plane P. When the elementary spatial region corresponding to a pixel includes an emitting source of X-ray or gamma radiation, some of the radiation emitted by the source reaches and is detected by the pixel. Thus, the amplitude of the signal of a pixel of a gamma image increases as the underlying spatial region associated with the pixel becomes more radiant (ie emits more X-rays or gamma radiation). In the remainder of the description, examples are given in relation to sources of gamma radiation, which correspond...

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Abstract

Method for producing a reconstruction image, the reconstruction image showing a position of irradiating sources in an environment, the reconstruction image being established on the basis of gamma images acquired by a gamma camera, which is sensitive to ionizing electromagnetic radiation, and movable relative to at least one irradiating source between two different measurement times, the gamma camera being joined to a visible camera, which is configured to form a visible image of the environment, the gamma camera and the visible camera defining an observation field, the method comprising establishing a reconstruction image, showing a position of at least one irradiation source in the observation field, the gamma camera and the visible camera being moved between at least two measurement times.

Description

technical field [0001] The technical field of the invention is the characterization of radiation sources present in the environment, in particular in nuclear installations or installations containing radiation sources. Background technique [0002] Gamma cameras are devices that allow the use of images to map radiation sources in a given environment, especially in nuclear facilities. This equipment was developed in the 1990s and is increasingly used in nuclear facilities for the purpose of radiological characterization. The purpose is to identify the main sources of radiation present in the facility. Specifically, the radiation sources are not evenly distributed. They are often localized, forming "hot spots", to use a term routinely used in the field of radiation protection. The advantage of gamma cameras is that they allow these hotspots to be located at a distance. [0003] The improvement and use of gamma cameras has been extensively described in the literature. Spec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/246G06T7/292
CPCG01T7/00G01T1/1603G06T7/74G06T7/38G06T7/337G01T1/167G06T11/00G06T2207/10116G06T2207/20221
Inventor 纪尧姆·蒙特蒙
Owner COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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