Ray energy measuring method and device and ray energy and dose synchronous measuring method

Abstract

The invention provides a ray energy measurement method and device, and the method comprises the steps: obtaining all reference radiation energies of an X-ray emitted by an X-ray source, and a first receiving dose and a second receiving dose under each reference radiation energy; constructing an energy correlation factor based on the first received dose and the second received dose; constructing an energy calibration curve based on the energy correlation factor and the reference radiation energy; acquiring a current first receiving dose and a current second receiving dose; obtaining a current energy correlation factor based on the current first received dose and the second received dose; and on the basis of the current energy correlation factor, according to the energy calibration curve, obtaining reference radiation energy corresponding to the current energy correlation factor, and taking the reference radiation energy as current radiation energy. According to the ray energy measurement method, the radiation energy emitted by the X-ray source can be acquired in real time at the ray imaging equipment end, and the X-ray imaging system can generate a high-quality CT image based on the current radiation energy.

Description

Technical Field

[0001] The present application belongs to the field of radiation detection technology, and in particular relates to a method and device for measuring radiation energy and a method for synchronously measuring radiation energy and dose. Background Art

[0002] Radiation energy is an important parameter to measure the ability of radiation to penetrate matter. In CT scanning, the energy of X-rays determines the depth of its penetration into the patient's body, which in turn affects the clarity and contrast of the images formed by the radiation imaging equipment.

[0003] Enabling the radiographic imaging device to acquire X-ray energy in real time helps the radiographic imaging device to automatically adjust exposure parameters and / or perform energy correction according to the X-ray energy acquired in real time, so as to optimize the exposure dose and improve the imaging quality of the radiographic imaging device. However, due to safety and isolation requirements, the high-voltage power supply (i.e., X-ray energy) of the X-ray tube in the X-ray imaging system is electrically isolated from the radiographic imaging device to prevent the high voltage from causing danger to the patient or the operator. In addition, since the high-voltage power supply and the X-ray tube will generate a strong electromagnetic field, which seriously interferes with the signal of the radiographic imaging device, in the existing X-ray imaging system, the radiographic imaging device cannot communicate with the high-voltage part of the X-ray tube in real time to acquire X-ray energy in real time, which makes it difficult for the existing X-ray imaging system to generate high-quality CT images.

[0004] Based on this, how to enable the X-ray imaging equipment to obtain X-ray energy in real time to improve the imaging quality of the X-ray imaging system is an important issue that needs to be solved urgently. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of this application is to provide a radiation energy measurement method for solving the problems that the radiation imaging equipment in the existing X-ray imaging system cannot obtain X-ray energy in real time and it is difficult to generate high-quality CT images.

[0006] To achieve the above object and other related objects, the present invention provides a method for measuring radiation energy, comprising the following steps:

[0007] Acquire each reference radiation energy of X-rays emitted by the X-ray source, and a first received dose and a second received dose corresponding to the reference radiation energy;

[0008] constructing an energy correlation factor based on the first received dose and the second received dose; constructing an energy calibration curve in which the energy correlation factor varies with the reference radiation energy based on the energy correlation factor and the reference radiation energy;

[0009] Acquire the current first received dose and the current second received dose; obtain a current energy correlation factor based on the current first received dose and the current second received dose; based on the current energy correlation factor and according to the energy calibration curve, obtain the reference radiation energy corresponding to the current energy correlation factor as the current radiation energy;

[0010] The first received dose is the absorbed dose obtained when the first sensor module receives the X-ray emitted by the X-ray source; the second received dose is the absorbed dose obtained when the second sensor module receives the X-ray after passing through the first sensor module.

[0011] In one embodiment of the present invention, constructing an energy correlation factor based on the first received dose and the second received dose includes:

[0012] The ratio of the second received dose to the corresponding first received dose is used as the energy correlation factor; and the ratio of each second received dose to the corresponding first received dose is calculated respectively as the energy correlation factor under each corresponding reference radiation energy.

[0013] In one embodiment of the present invention, constructing an energy calibration curve in which the energy correlation factor varies with the reference radiation energy based on the energy correlation factor and the reference radiation energy includes:

[0014] Based on each of the energy correlation factors and each of the reference radiation energies, and according to the corresponding relationship between the energy correlation factor and the reference radiation energy, a first distribution of each of the energy correlation factors on the reference radiation energy is obtained; and a fitting process is performed based on the first distribution to obtain a first fitting curve as the energy calibration curve.

[0015] Correspondingly, the present invention provides a method for synchronously measuring radiation energy and dose, comprising: using the above-mentioned radiation energy measurement method to obtain current radiation energy; and,

[0016] Obtaining reference radiation doses corresponding to each reference radiation energy;

[0017] Based on the reference radiation dose and the first received dose, a dose correlation factor is constructed; based on the dose correlation factor and the reference radiation energy, a dose calibration curve in which the dose correlation factor varies with the reference radiation energy is constructed;

[0018] Based on the current radiation energy and according to the dose calibration curve, a dose correlation factor corresponding to the current radiation energy is obtained as a current dose correlation factor; based on the current dose correlation factor and a current first received dose, a current radiation dose is obtained.

[0019] In one embodiment of the present invention, constructing a dose correlation factor based on the reference radiation dose and the first received dose includes:

[0020] The ratio of the reference radiation dose to the first received dose under the radiation dose is used as the dose association factor; and the ratio of each reference radiation dose to the corresponding first received dose is calculated respectively as each corresponding dose association factor.

[0021] In one embodiment of the present invention, constructing a dose calibration curve in which the dose correlation factor varies with the reference radiation energy based on the dose correlation factor and the reference radiation energy includes:

[0022] Based on each of the dose-related factors and each of the reference radiation energies, and in accordance with the corresponding relationship between the dose-related factors and the reference radiation energies, a second distribution of each of the dose-related factors on the reference radiation energy is obtained; and fitting processing is performed based on the second distribution to obtain a second fitting curve as the dose calibration curve.

[0023] Correspondingly, the present invention provides a radiation energy measuring device, characterized in that it includes:

[0024] A first sensor module is used to receive X-rays emitted by an X-ray source, and obtain a first received dose according to the received X-rays output by the X-ray source;

[0025] a second sensing module, configured to receive the X-rays after passing through the first sensing module, and obtain a second received dose according to the received X-rays after passing through the first sensing module;

[0026] A processing module, connected to the first sensing module, the second sensing module and the radiation imaging device respectively; the processing module is used to obtain the current radiation energy by adopting the radiation energy measurement method as described above, and send the current radiation energy to the radiation imaging device;

[0027] Wherein, the first sensor module and the second sensor module are parallel to each other and arranged at intervals.

[0028] In one embodiment of the present invention, the first sensor module includes:

[0029] A first sensor and a first filter; the radiation receiving surface of the first sensor faces the X-ray source, and is used to receive the X-rays output by the X-ray source to obtain the first received dose; the first filter is attached to the surface of the first sensor away from the X-ray source, and is used to filter out low-energy photons in the X-rays after passing through the first sensor.

[0030] In one embodiment of the present invention, the second sensing module at least includes: a second sensor; a radiation receiving surface of the second sensor faces the X-ray source, and is used to receive the X-rays after passing through the first sensing module to obtain a second received dose.

[0031] In an embodiment of the present invention, the distance between the first sensor module and the second sensor module is smaller than a preset distance threshold.

[0032] As described above, the present application provides a method and device for measuring radiation energy, which has at least the following beneficial effects:

[0033] By acquiring each reference radiation energy, a first received dose, and a second received dose; constructing an energy correlation factor based on the first received dose and the second received dose, and constructing an energy calibration curve based on the energy correlation factor and the reference radiation energy corresponding to the energy correlation factor; and by acquiring the current first received dose and the current second received dose, obtaining the current energy correlation factor based on the current first received dose and the current second received dose, and obtaining the reference radiation energy corresponding to the current energy correlation factor according to the energy calibration curve as the current radiation energy, the ray energy measurement method realizes real-time acquisition of the radiation energy emitted by the X-ray source at the ray imaging device end, which helps the X-ray imaging system to generate high-quality CT images based on the current radiation energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of a flow chart of a ray energy measurement method provided by the present application in one embodiment is shown.

[0035] Figure 2 A schematic diagram of a flow chart of a method for synchronously measuring radiation energy and dose provided by the present application in one embodiment is shown.

[0036] Figure 3 A schematic structural diagram of a radiation energy measuring device provided by the present application in a first embodiment is shown.

[0037] Figure 4 A schematic structural diagram of a radiation energy measuring device provided by the present application in a second embodiment is shown.

[0038] Figure 5 A schematic structural diagram of a radiation energy measuring device provided by the present application in a third embodiment is shown.

[0039] Figure 6 A schematic structural diagram of a radiation energy measuring device provided by the present application in a fourth embodiment is shown.

[0040] Figure 7 A schematic structural diagram of a radiation energy measuring device provided by the present application in a fifth embodiment is shown.

[0041] Description of Reference Numerals

[0042] S1~S5, steps; 1. first sensing module; 11. first sensor; 12. first filter; 2. second sensing module; 21. second sensor; 22. second filter; 3. processing module; 4. housing. DETAILED DESCRIPTION

[0043] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0044] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application, and thus the drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0045] To facilitate the understanding of the technical solutions provided by the present application, the relevant terms in the present application are explained before the specific embodiments, as follows:

[0046] X-ray energy spectrum flux: refers to the distribution of the number of X-ray photons passing through a unit area per unit time, describing the relationship between the energy and number of X-ray photons.

[0047] Normalized energy spectrum distribution: It is a standardized energy spectrum whose total energy or power in a specific frequency band is adjusted to unit value to facilitate comparison of energy spectrum data under different conditions.

[0048] The embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0049] The following embodiments of the present application provide a method for measuring radiation energy, by acquiring each reference radiation energy, a first received dose, and a second received dose; constructing an energy correlation factor based on the first received dose and the second received dose, and constructing an energy calibration curve based on the energy correlation factor and the reference radiation energy corresponding to the energy correlation factor; and by acquiring a current first received dose and a current second received dose, obtaining a current energy correlation factor based on the current first received dose and the current second received dose, and obtaining the reference radiation energy corresponding to the current energy correlation factor according to the energy calibration curve based on the current energy correlation factor as the current radiation energy. The radiation energy measurement method realizes real-time acquisition of the radiation energy emitted by the X-ray source at the radiation imaging device end, which helps the X-ray imaging system to generate high-quality CT images based on the current radiation energy.

[0050] See also Figure 1 , showing a schematic flow chart of a ray energy measurement method provided by the present invention in one embodiment.

[0051] like Figure 1 As shown, in this embodiment, the ray energy measurement method provided by the present invention is applied to a ray imaging device, and the method includes the following steps:

[0052] Step S1, obtaining each reference radiation energy of X-rays emitted by an X-ray source, and a first received dose and a second received dose corresponding to the reference radiation energy;

[0053] The reference radiation energy is the energy of the X-ray before it is attenuated, that is, the radiation energy of the X-ray emitted by the X-ray source;

[0054] The first received dose is an absorbed dose obtained when the first sensor module receives the X-ray emitted by the X-ray source; the second received dose is an absorbed dose obtained when the second sensor module receives the X-ray after passing through the first sensor module.

[0055] Optionally, the method for acquiring the reference radiation energy includes: acquiring a set high voltage of an X-ray tube corresponding to the X-ray source, and using the set high voltage as the reference radiation energy.

[0056] Exemplarily, the first sensing module includes a first sensor, and the first received dose is obtained as follows:

[0057]

[0058] In the above formula, ε 1 represents the first received dose; ω kV =∫NkV (E)dE represents the X-ray energy spectrum flux; μ s Represents the sensor mass attenuation coefficient; d s1 represents the thickness of the first sensor; E represents the energy of the X-ray photon; It represents the ratio of the X-ray absorbed after passing through the first sensor.

[0059] Exemplarily, the first sensing module includes: a first sensor and a first filter, and the second sensing module includes: a second sensor. Then, the second received dose is obtained as follows:

[0060]

[0061] In the above formula, ε 2 represents the second received dose; μ s Represents the sensor mass attenuation coefficient; d a1 Indicates the thickness of the first filter; μ a Represents the filter mass attenuation coefficient; d s2 represents the thickness of the second sensor; E represents the energy of the X-ray photon; represents the remaining intensity ratio of the X-ray after passing through the first sensor and the first filter; Indicates the proportion of the X-ray absorbed after passing through the second sensor.

[0062] Step S2: constructing an energy correlation factor based on the first received dose and the second received dose; and constructing an energy calibration curve of the energy correlation factor varying with the reference radiation energy based on the energy correlation factor and the reference radiation energy;

[0063] Specifically, the ratio of the second received dose to the corresponding first received dose is used as the energy correlation factor; the ratio of each second received dose to the corresponding first received dose is calculated respectively as the energy correlation factor under each corresponding reference radiation energy; based on each energy correlation factor and each reference radiation energy, according to the correspondence between the energy correlation factor and the reference radiation energy, a first distribution of each energy correlation factor on the reference radiation energy is obtained, and a fitting process is performed based on the first distribution to obtain a first fitting curve as the energy calibration curve.

[0064] Optionally, the fitting process includes: linear fitting and / or nonlinear fitting; wherein, when the corresponding distribution shows a linear change trend, the fitting process is linear fitting; when the corresponding distribution shows a nonlinear change trend, the fitting process is nonlinear fitting.

[0065] Exemplarily, the first sensing module includes a first sensor and a first filter, and the second sensing module includes a second sensor. Then, the energy correlation factor is constructed as follows:

[0066]

[0067] In the above formula, g represents the energy correlation factor; ε 1 represents the first received dose; ε 2 represents the second received dose;

[0068] The energy correlation factor of the above formula is reduced to obtain:

[0069]

[0070] It can be seen from the above formula that the energy correlation factor is independent of the X-ray energy spectrum flux, and because μ s , μ a d s1 d a1 and d s2 (representing the sensor mass attenuation coefficient, the filter mass attenuation coefficient, the thickness of the first sensor, the thickness of the first filter and the thickness of the second sensor respectively) are all fixed values, so the change of the energy correlation factor is only related to the normalized energy spectrum (i.e., the reference radiation energy).

[0071] Step S3, obtaining the current first received dose and the current second received dose; obtaining a current energy correlation factor based on the current first received dose and the current second received dose; based on the current energy correlation factor and according to the energy calibration curve, obtaining the reference radiation energy corresponding to the current energy correlation factor as the current radiation energy;

[0072] The current radiation energy is the radiation energy of the X-rays currently emitted by the X-ray source.

[0073] Specifically, the current first received dose and the current second received dose are obtained; the ratio of the current second received dose to the current first received dose is calculated as the current energy correlation factor; in the energy calibration curve, the reference radiation energy corresponding to the current energy correlation factor is obtained as the current radiation energy.

[0074] A radiation energy measurement method provided in the above embodiment obtains each reference radiation energy, a first received dose and a second received dose; constructs an energy correlation factor based on the first received dose and the second received dose, and constructs an energy calibration curve based on the energy correlation factor and the reference radiation energy corresponding to the energy correlation factor; and obtains the current first received dose and the current second received dose, obtains the current energy correlation factor based on the current first received dose and the current second received dose, and obtains the reference radiation energy corresponding to the current energy correlation factor according to the energy calibration curve as the current radiation energy. The radiation energy measurement method realizes real-time acquisition of the radiation energy emitted by the X-ray source at the radiation imaging device end, which helps the X-ray imaging system to generate high-quality CT images based on the current radiation energy.

[0075] See also Figure 2 , showing a flow chart of a method for synchronously measuring radiation energy and dose provided by the present invention in one embodiment.

[0076] like Figure 2 As shown, in this embodiment, the method for synchronously measuring radiation energy and dose provided by the present invention includes: using the radiation energy measurement method to obtain the current radiation energy; and,

[0077] Step S4, obtaining a reference radiation dose corresponding to each reference radiation energy; constructing a dose correlation factor based on the reference radiation dose and the first received dose; and constructing a dose calibration curve in which the dose correlation factor varies with the reference radiation energy based on the dose correlation factor and the reference radiation energy;

[0078] The reference radiation dose is the radiation dose before the X-ray is attenuated.

[0079] Specifically, the ratio of the reference radiation dose to the first received dose under the reference radiation energy is used as the dose correlation factor; the ratio of each reference radiation dose to the corresponding first received dose is calculated respectively as the dose correlation factor under each corresponding reference radiation dose; based on each dose correlation factor and each reference radiation energy, according to the correspondence between the dose correlation factor and the reference radiation energy, a second distribution of each dose correlation factor on the reference radiation energy is obtained; based on the second distribution, fitting processing is performed to obtain a second fitting curve as the dose calibration curve.

[0080] Optionally, the reference radiation dose is obtained by: using a standard dosimeter to measure the radiation dose of the X-ray before it is attenuated; or using a Monte Carlo method to simulate the radiation dose of the X-ray before it is attenuated.

[0081] Exemplarily, the reference radiation dose is obtained as follows:

[0082] ε 0 =ω kV ∫n kV (E)EdE

[0083] In the above formula, ω kV =∫N kV (E)dE represents the X-ray energy spectrum flux; represents the normalized energy spectrum distribution; ∫n kV (E) EdE represents the reference radiation energy.

[0084] Exemplarily, the first sensing module includes a first sensor, and the dosage correlation factor is constructed as follows:

[0085]

[0086] In the above formula, α represents the dose-related factor; ε 0 represents the reference radiation dose; ε 1 represents the first received dose; ω kV represents the X-ray energy spectrum flux;

[0087] The dose-related factor of the above formula is reduced to obtain:

[0088]

[0089] It can be seen from the above formula that the dose correlation factor is independent of the X-ray energy spectrum flux, and because μ s and d s1 (representing the sensor mass attenuation coefficient and the thickness of the first sensor respectively) are both fixed values. Therefore, the change of the dose correlation factor is only related to the normalized energy spectrum (ie, the reference radiation energy).

[0090] Step S5, based on the current radiation energy and according to the dose calibration curve, obtaining a dose correlation factor corresponding to the current radiation energy as a current dose correlation factor; and obtaining a current radiation dose based on the current dose correlation factor and the current first received dose;

[0091] The current radiation dose is the radiation dose of the X-rays currently emitted by the X-ray source.

[0092] Specifically, in the dose calibration curve, the dose correlation factor corresponding to the current radiation energy is obtained as the current dose correlation factor; based on the current dose correlation factor and the current first received dose, the current radiation dose is obtained, which is the product of the current dose correlation factor and the current first received dose.

[0093] The above-mentioned embodiment provides a method for synchronously measuring radiation energy and dose, which adopts a radiation energy measurement method to obtain the current radiation energy; and constructs a dose correlation factor based on a reference radiation dose and a first received dose; constructs a dose calibration curve of the dose correlation factor as it changes with the reference radiation energy based on the dose correlation factor and the reference radiation energy corresponding to the dose correlation factor; obtains the current dose correlation factor based on the current radiation energy and the dose calibration curve; obtains the current radiation dose of the X-rays emitted by the X-ray source based on the current dose correlation factor and the current first received dose. The method for synchronously measuring radiation energy and dose realizes the real-time synchronous acquisition of the radiation energy and radiation dose emitted by the X-ray source at the radiation imaging device end, so that the radiation imaging device end automatically adjusts the exposure parameters based on the current radiation dose acquired in real time, thereby optimizing the exposure dose; and performs energy correction based on the current radiation energy acquired in real time, thereby further improving the image quality of the CT images generated by the X-ray imaging system. Please refer to Figure 3 , showing a schematic structural diagram of a radiation energy measuring device provided by the present invention in one embodiment.

[0094] like Figure 3 As shown, in this embodiment, the radiation energy measuring device provided by the present invention includes:

[0095] A first sensor module 1 is used to receive X-rays outputted by an X-ray source, and obtain a first received dose according to the received X-rays outputted by the X-ray source;

[0096] A second sensor module 2 is used to receive the X-rays after passing through the first sensor module, and obtain a second received dose according to the received X-rays after passing through the first sensor module;

[0097] A processing module 3 is connected to the first sensing module, the second sensing module and the radiation imaging device respectively; the processing module is used to obtain each reference radiation energy of the X-ray emitted by the X-ray source, and the first received dose and the second received dose corresponding to the reference radiation energy; based on the first received dose and the corresponding second received dose, an energy correlation factor is constructed; based on the energy correlation factor and the reference radiation energy, an energy calibration curve of the energy correlation factor changing with the reference radiation energy is constructed; the current first received dose and the second received dose are obtained; based on the current first received dose and the current second received dose, the current energy correlation factor is obtained; based on the current energy correlation factor, according to the energy calibration curve, the reference radiation energy corresponding to the current energy correlation factor is obtained as the current radiation energy, and the current radiation energy is sent to the radiation imaging device;

[0098] The first sensor module 1 and the second sensor module 2 are parallel to each other and arranged at intervals; the first sensor module 1 is closer to the X-ray source than the second sensor module 2 .

[0099] Optionally, each reference radiation energy and a first received dose and a second received dose corresponding to the reference radiation energy are stored in advance in the processing module 3 .

[0100] Optional, such as Figure 4 As shown, the first sensing module 1 includes: a first sensor 11 and a first filter 12; the radiation receiving surface of the first sensor 11 faces the X-ray source, and is used to receive the X-rays output by the X-ray source to obtain the first received dose; the first filter 12 is attached to the surface of the first sensor 11 away from the X-ray source, and is used to filter out low-energy photons in the X-rays after passing through the first sensor 11.

[0101] Optional, such as Figure 5 As shown, the second sensor module 2 includes: a second sensor 21; the radiation receiving surface of the second sensor 21 faces the X-ray source, and is used to receive the X-rays after passing through the first sensor module 1 to obtain the second received dose.

[0102] Optional, such as Figure 6As shown, the second sensor module 2 also includes: a second filter 22; the second filter 22 is attached to the surface of the second sensor 21 away from the X-ray source, and is used to filter out low-energy photons in the X-rays after passing through the first sensor module 2 and the second sensor 21, avoid scattering of the X-rays after passing through the second sensor 21, reduce interference from scattered photons, improve the accuracy and reliability of the obtained second received dose, and further improve the accuracy of measuring the energy of X-rays emitted by the X-ray source.

[0103] Optional, such as Figure 7 As shown, the device further includes: a housing 4, in which the first sensor module 1 and the second sensor module 2 are arranged to protect the first sensor module 1 and the second sensor module 2 and prevent the first sensor module 1 and the second sensor module 2 from being damaged by external force collision.

[0104] Optionally, the sensing surfaces of the first sensor module 1 and the second sensor module 2 are respectively the radiation receiving surfaces of the first sensor 11 and the second sensor 22 .

[0105] Optionally, both the first sensor 11 and the second sensor 21 are X-ray detectors; the X-ray detectors convert received X-ray radiation into electric charges through an ionization effect, and obtain received X-ray doses by measuring the amount of charges.

[0106] Optionally, the thicknesses of the first sensor, the first filter and the second sensor are determined in advance based on actual experiments or simulation experiments, so as to obtain the first received dose and the second received dose that meet preset calibration requirements based on the first sensor, the first filter and the second sensor at corresponding thicknesses; the preset calibration requirements include: the slopes of the energy calibration curve and the dose calibration curve constructed based on the first received dose and the second received dose are both within a preset slope range.

[0107] Optionally, the first sensor 11 and the second sensor 21 are of the same model.

[0108] Optionally, the first filter plate 12 and the second filter plate 22 are made of the same material.

[0109] Optionally, the radiation energy measuring device is arranged on the radiation receiving surface of the radiation imaging device and at a preset distance from the imaging area of ​​the radiation imaging device to avoid affecting the imaging area of ​​the radiation imaging device in receiving the X-rays and reducing the quality of the CT image generated by the radiation imaging device.

[0110] Optionally, the preset distance ranges from 0 to 3 cm; preferably, the preset distance is 0 to ensure consistency between the measured radiation energy and the radiation energy received by the imaging area.

[0111] Exemplarily, the radiation energy measuring device is arranged at the upper left corner, lower left corner, upper right corner or lower right corner of the radiation receiving surface of the radiation imaging device.

[0112] Optionally, the radiation imaging device includes: a flat-panel detector.

[0113] Optionally, a distance between the first sensor module and the second sensor module is less than or equal to a preset distance threshold.

[0114] A radiation energy measurement device provided in this embodiment obtains each reference radiation energy of X-rays emitted by an X-ray source, and a first received dose and a second received dose corresponding to the reference radiation energy through a processing module; constructs an energy correlation factor based on the first received dose and the second received dose; constructs an energy calibration curve based on the energy correlation factor and the reference radiation energy corresponding to the energy correlation factor; and, by setting a first sensing module and a second sensing module, obtains the current first received dose and the second received dose using the first sensing module and the second sensing module respectively; obtains the current energy correlation factor based on the current first received dose and the current second received dose; obtains the current radiation energy corresponding to the X-ray source based on the energy calibration curve and the current energy correlation factor. The radiation energy measurement device can realize real-time acquisition of the radiation energy emitted by the X-ray source at the radiation imaging device end, which helps X-ray imaging systems such as DR systems, CBCT systems and / or CT to generate high-quality CT images based on the current radiation energy.

[0115] Correspondingly, the present invention further provides a device for synchronously measuring radiation energy and dose; the difference between the device for synchronously measuring radiation energy and dose and the radiation energy measuring device is that:

[0116] The processing module 3 is also used to obtain the reference radiation dose corresponding to each reference radiation energy; construct a dose correlation factor based on the reference radiation dose and the first received dose; construct a dose calibration curve in which the dose correlation factor changes with the reference radiation energy based on the dose correlation factor and the reference radiation energy; based on the current radiation energy, obtain the current dose correlation factor according to the dose calibration curve; obtain the current radiation dose based on the current dose correlation factor and the current first received dose; and send the current radiation energy and the current radiation dose to the X-ray imaging device.

[0117] Optionally, the method for acquiring the reference radiation dose in the processing module 3 includes: storing the reference radiation dose corresponding to each reference radiation energy in the processing module 3 in advance.

[0118] The present application embodiment also provides a computer-readable storage medium. A person of ordinary skill in the art can understand that all or part of the steps in the method for implementing the above embodiment can be completed by a program to instruct the processor, and the program can be stored in a computer-readable storage medium, and the storage medium is a non-transitory medium, such as a random access memory, a read-only memory, a flash memory, a hard disk, a solid-state hard disk, a magnetic tape, a floppy disk, an optical disc, and any combination thereof. The above storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a digital video disc (DVD)), or a semiconductor medium (e.g., a solid-state hard disk (SSD)), etc.

[0119] The present application embodiment may also provide a computer program product, the computer program product including one or more computer instructions. When the computer instructions are loaded and executed on a computing device, the process or function described in the embodiment of the present application is generated in whole or in part. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer or data center.

[0120] When the computer program product is executed by a computer, the computer executes the method described in the above method embodiment. The computer program product may be a software installation package, and when the above method is required, the computer program product may be downloaded and executed on a computer.

[0121] The descriptions of the processes or structures corresponding to the above-mentioned figures have different emphases. For parts that are not described in detail in a certain process or structure, please refer to the relevant descriptions of other processes or structures.

[0122] The above embodiments are merely illustrative of the principles and effects of the present application and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present application shall still be covered by the claims of the present application.

Claims

1. A method for measuring radiation energy, characterized in that: include: Acquire each reference radiation energy of X-rays emitted by the X-ray source, and a first received dose and a second received dose corresponding to the reference radiation energy; constructing an energy correlation factor based on the first received dose and the second received dose; Based on the energy correlation factor and the reference radiation energy, constructing an energy calibration curve of the energy correlation factor varying with the reference radiation energy; Acquire the current first received dose and the second received dose; Obtaining a current energy correlation factor based on the current first received dose and the current second received dose; Based on the current energy correlation factor and according to the energy calibration curve, obtaining the reference radiation energy corresponding to the current energy correlation factor as the current radiation energy; The first received dose is the absorbed dose obtained when the first sensor module receives the X-ray emitted by the X-ray source; the second received dose is the absorbed dose obtained when the second sensor module receives the X-ray after passing through the first sensor module.

2. The method according to claim 1, characterized in that The constructing an energy correlation factor based on the first received dose and the second received dose includes: The ratio of the second received dose to the corresponding first received dose is used as the energy correlation factor; and the ratio of each second received dose to the corresponding first received dose is calculated respectively as the energy correlation factor under each corresponding reference radiation energy.

3. The method according to claim 1, characterized in that The step of constructing an energy calibration curve of the energy correlation factor varying with the reference radiation energy based on the energy correlation factor and the reference radiation energy comprises: Based on each of the energy correlation factors and each of the reference radiation energies, and according to the corresponding relationship between the energy correlation factor and the reference radiation energy, a first distribution of each of the energy correlation factors on the reference radiation energy is obtained; and a fitting process is performed based on the first distribution to obtain a first fitting curve as the energy calibration curve.

4. A method for synchronously measuring radiation energy and dose, characterized in that: include: Using the ray energy measurement method as described in claims 1 to 3 to obtain the current radiation energy; as well as, Obtaining reference radiation doses corresponding to each reference radiation energy; constructing a dose correlation factor based on the reference radiation dose and the first received dose; Based on the dose correlation factor and the reference radiation energy, constructing a dose calibration curve in which the dose correlation factor varies with the reference radiation energy; Based on the current radiation energy and according to the dose calibration curve, obtaining a dose correlation factor corresponding to the current radiation energy as a current dose correlation factor; A current radiation dose is obtained based on the current dose-related factor and the current first received dose.

5. The method according to claim 4, characterized in that The step of constructing a dose correlation factor based on the reference radiation dose and the first received dose includes: The ratio of the reference radiation dose to the first received dose under the radiation dose is used as the dose association factor; and the ratio of each reference radiation dose to the corresponding first received dose is calculated respectively as each corresponding dose association factor.

6. The method according to claim 4, characterized in that The step of constructing a dose calibration curve in which the dose correlation factor varies with the reference radiation energy based on the dose correlation factor and the reference radiation energy includes: Based on each of the dose-related factors and each of the reference radiation energies, and in accordance with the corresponding relationship between the dose-related factors and the reference radiation energies, a second distribution of each of the dose-related factors on the reference radiation energy is obtained; and fitting processing is performed based on the second distribution to obtain a second fitting curve as the dose calibration curve.

7. A radiation energy measuring device, characterized in that: include: A first sensor module is used to receive X-rays emitted by an X-ray source, and obtain a first received dose according to the received X-rays output by the X-ray source; a second sensing module, configured to receive the X-rays after passing through the first sensing module, and obtain a second received dose according to the received X-rays after passing through the first sensing module; a processing module, connected to the first sensing module, the second sensing module and the radiation imaging device respectively; the processing module is used to obtain current radiation energy by using the radiation energy measurement method according to claims 1 to 3, and send the current radiation energy to the radiation imaging device; Wherein, the first sensor module and the second sensor module are parallel to each other and arranged at intervals.

8. The device according to claim 7, characterized in that The first sensing module comprises: A first sensor and a first filter; the radiation receiving surface of the first sensor faces the X-ray source, and is used to receive the X-rays output by the X-ray source to obtain the first received dose; the first filter is attached to the surface of the first sensor away from the X-ray source, and is used to filter out low-energy photons in the X-rays after passing through the first sensor.

9. The device according to claim 7 or 8, characterized in that The second sensing module at least includes: a second sensor; the radiation receiving surface of the second sensor faces the X-ray source, and is used to receive the X-rays after passing through the first sensing module to obtain a second received dose.

10. The device according to claim 7, characterized in that The distance between the first sensor module and the second sensor module is smaller than a preset distance threshold.

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