X-ray continuous energy spectrum determination method and device, electronic equipment and storage medium

An X-ray and energy spectrum technology, which is applied to the determination method, device, intelligent equipment and storage medium of X-ray continuum, can solve the problems of difficult work, heavy workload, high time cost, etc., and achieve simple and fast acquisition, The effect of increasing speed

Active Publication Date: 2021-01-15
TIANJIN MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the empirical energy spectrum estimation is based on the polynomial fitting method of the actual energy spectrum information, the calculation speed is fast but the analysis of the physical mechanism is lacking; the semi-empirical energy spectrum estimation is the indirect estimation using the X-ray transmission data measured by the phantom device , need to deduce the physical process, the workload is heavy, and the time cost is high; the energy spectrum model based on Monte Carlo simulation needs to use internal structural information such as X-ray generating devices that are not easy to obtain in clinical practice, and the work is difficult

Method used

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  • X-ray continuous energy spectrum determination method and device, electronic equipment and storage medium
  • X-ray continuous energy spectrum determination method and device, electronic equipment and storage medium

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Embodiment 1

[0028] figure 1 It is a flow chart of the method for determining the X-ray continuum in Embodiment 1 of the present invention. This embodiment can be applied to the case of acquiring the continuum. The method can be executed by a device for acquiring the continuum. The continuum The spectrum acquisition device can be realized by software and / or hardware, and this embodiment does not impose restrictions on the type and equipment of the energy spectrum acquisition device. Such as figure 1 As shown, the method specifically includes:

[0029] S110. Obtain a corresponding relationship between X-ray energy spectrum data and energy, and establish an initial continuous energy spectrum model based on the corresponding relationship.

[0030] The generation of X-rays is a phenomenon that occurs when incident electrons excite inner shell electrons of atoms. That is, the electrons in the inner shell jump to an energy level higher than the Fermi energy after being excited, and when the v...

Embodiment 2

[0064] figure 2 It is a structural schematic diagram of the X-ray continuum determining device in Embodiment 2 of the present invention. Such as figure 2 As shown, the device includes:

[0065] The initial continuum model determination module 210 is used to obtain the corresponding relationship between X-ray energy spectrum data and energy, and establish the initial continuum model based on the corresponding relationship;

[0066] The discrete energy spectrum function determination module 220 is used to discretize the initial continuous energy spectrum model to obtain a preset number of discrete energy spectrum functions;

[0067] The PDD matrix data acquisition module 230 is used to acquire the preset number of single-energy simulated PDD matrix data and the preset range of continuous energy spectrum measurement PDD matrix data based on different underwater depth sequences;

[0068] The target continuum model acquisition module 240 is used to determine each power spectru...

Embodiment 3

[0089] image 3 is a schematic structural diagram of the electronic device in Embodiment 3 of the present invention. image 3 A block diagram of an exemplary electronic device 312 suitable for implementing embodiments of the invention is shown. image 3 The electronic device 312 shown is only an example, and should not limit the functions and scope of use of this embodiment of the present invention.

[0090] Such as image 3 As shown, electronic device 312 takes the form of a general-purpose computing device. Components of electronic device 312 may include, but are not limited to: one or more processors or processing units 316 , system memory 328 , bus 318 connecting various system components including system memory 328 and processing unit 316 .

[0091] Bus 318 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus struc...

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Abstract

The invention discloses an X-ray continuous energy spectrum determination method and device, intelligent equipment and a storage medium, and the method comprises the steps of obtaining the corresponding relation between X-ray energy spectrum data and energy, and building an initial continuous energy spectrum model based on the corresponding relation; discretizing the initial continuous energy spectrum model to obtain a preset number of discrete energy spectrum functions; acquiring the preset number of single-energy simulation PDD matrix data and measurement PDD matrix data of a preset range continuous energy spectrum based on different underwater depth sequences; determining each energy spectrum coefficient in the initial continuous energy spectrum model based on the discrete energy spectrum function, the simulated PDD matrix data and the measured PDD matrix data to obtain a target continuous energy spectrum model; and obtaining a to-be-estimated continuous energy range, and inputtingthe energy range into the target continuous energy spectrum function to obtain a continuous energy spectrum corresponding to the continuous energy range. The continuous energy spectrum can be simply,conveniently and rapidly acquired, and the energy spectrum acquisition rate is improved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of computer imaging, and in particular to a method, device, smart device, and storage medium for determining an X-ray continuum. Background technique [0002] The energy spectrum information of X-ray photon beam plays an important role in the quantitative analysis of CT images, the reconstruction of energy spectrum CT images and the calculation of CT radiation dose. [0003] At present, the commonly used indirect estimation methods for obtaining X-ray energy spectrum can be divided into empirical type, semi-empirical type and Monte Carlo simulation type. Among them, the empirical energy spectrum estimation is based on the polynomial fitting method of the actual energy spectrum information, the calculation speed is fast but the analysis of the physical mechanism is lacking; the semi-empirical energy spectrum estimation is the indirect estimation using the X-ray transmission data measured...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G01T1/36
CPCG06F30/20G01T1/36
Inventor 明鑫杨成文孟慧鹏翟贺争
Owner TIANJIN MEDICAL UNIV
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