Ray energy measurement method and apparatus, and ray energy and dose synchronous measurement method

Abstract

The present invention provides a ray energy measurement method and apparatus. The method comprises: acquiring reference radiation energies used by an X-ray source for emitting X-rays, and first received doses and second received doses at the reference radiation energies; constructing energy correlation factors on the basis of the first received doses and the second received doses; constructing an energy calibration curve on the basis of the energy correlation factors and the reference radiation energies; acquiring a current first received dose and a current second received dose; on the basis of the current first received dose and the current second received dose, obtaining a current energy correlation factor; and on the basis of the current energy correlation factor and according to the energy calibration curve, obtaining a reference radiation energy corresponding to the current energy correlation factor as a current radiation energy. In the ray energy measurement method of the present invention, a ray imaging device can acquire in real time radiation energies used by an X-ray source for emitting, so that an X-ray imaging system can generate a high-quality CT image on the basis of a current radiation energy.

Description

A method and apparatus for measuring radiation energy and a method for simultaneously measuring radiation energy and dose. Technical Field

[0001] This 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 Technology

[0002] X-ray energy is an important parameter for measuring the ability of X-rays to penetrate matter. In CT scans, the energy of X-rays determines the depth to which they penetrate the patient's body, thus affecting the clarity and contrast of the images formed by the X-ray imaging equipment.

[0003] Enabling X-ray imaging equipment to acquire X-ray energy in real time helps it automatically adjust exposure parameters and / or perform energy correction based on the acquired X-ray energy, thereby optimizing the exposure dose and improving the image quality. However, for safety and isolation requirements, the high-voltage power supply (i.e., X-ray energy) of the X-ray tube in an X-ray imaging system is electrically isolated from the imaging equipment to prevent the high voltage from posing a danger to the patient or operator. Furthermore, because the high-voltage power supply and the X-ray tube generate a strong electromagnetic field, severely interfering with the signal of the imaging equipment, existing X-ray imaging systems cannot communicate with the high-voltage section of the X-ray tube in real time to acquire X-ray energy. This makes it difficult for existing X-ray imaging systems to generate high-quality CT images.

[0004] Therefore, how to enable X-ray imaging equipment to acquire X-ray energy in real time in order to improve the imaging quality of X-ray imaging systems is an important problem that urgently needs to be solved. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a method for measuring X-ray energy to solve the problems of existing X-ray imaging systems, such as the inability of X-ray imaging equipment to acquire X-ray energy in real time and the difficulty in generating high-quality CT images.

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

[0007] Obtain each reference radiation energy of the X-ray emitted by the X-ray source, and the corresponding first and second received doses at the reference radiation energies;

[0008] Based on the first received dose and the 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 as a function of the reference radiation energy is constructed.

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

[0010] Wherein, the first received dose is the radiation dose obtained by the first sensing module receiving the X-rays emitted by the X-ray source; the second received dose is the radiation dose obtained by the second sensing module receiving the X-rays after they have passed through the first sensing 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; the ratio of each second received dose to the corresponding first received dose is calculated as the energy correlation factor under each corresponding reference radiation energy.

[0013] In one embodiment of the present invention, constructing an energy calibration curve of the energy correlation factor as a function of 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, a first distribution of each of the energy correlation factors on the reference radiation energy is obtained according to the correspondence between the energy correlation factors and the reference radiation energy; a fitting process is performed based on the first distribution to obtain a first fitting curve, which is used as the energy calibration curve.

[0015] Correspondingly, the present invention provides a method for simultaneous measurement of radiation energy and dose, comprising: obtaining the current radiation energy using the radiation energy measurement method described above; and,

[0016] Obtain the reference radiation dose 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 of the dose correlation factor as a function of the reference radiation energy is constructed.

[0018] Based on the current radiation energy, according to the dose calibration curve, a 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.

[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 correlation factor; the ratio of each reference radiation dose to the corresponding first received dose is calculated and used as the corresponding dose correlation factor.

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

[0022] 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, a fitting process is performed to obtain a second fitting curve, which is used as the dose calibration curve.

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

[0024] The first sensing module is used to receive X-rays emitted by an X-ray source and obtain a first received dose based on the received X-rays output by the X-ray source.

[0025] The second sensing module is used to receive the X-rays after they pass through the first sensing module, and to obtain a second received dose based on the received X-rays after they pass through the first sensing module.

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

[0027] The first sensing module and the second sensing module are arranged in parallel and spaced apart.

[0028] In one embodiment of the present invention, the first sensing 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 that have passed through the first sensor.

[0030] In one embodiment of the present invention, the second sensing module includes at least: 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.

[0031] In one embodiment of the present invention, the distance between the first sensing module and the second sensing module is less than a preset distance threshold.

[0032] As described above, the radiation energy measurement method and apparatus provided in this application have at least the following beneficial effects:

[0033] By acquiring reference radiation energies, 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; constructing an energy calibration curve based on the energy correlation factor and the reference radiation energy corresponding to the energy correlation factor; and 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 radiation energy measurement method enables real-time acquisition of the radiation energy emitted by the X-ray source at the X-ray imaging device, which helps the X-ray system generate high-quality CT images based on the current radiation energy. Attached Figure Description

[0034] Figure 1 shows a schematic flowchart of an embodiment of a radiation energy measurement method provided in this application.

[0035] Figure 2 shows a flowchart of an embodiment of a method for simultaneous measurement of radiation energy and dose provided in this application.

[0036] Figure 3 shows a schematic diagram of the structure of a radiation energy measuring device provided in this application in the first embodiment.

[0037] Figure 4 shows a schematic diagram of the structure of a radiation energy measuring device provided in this application in the second embodiment.

[0038] Figure 5 shows a schematic diagram of the structure of a radiation energy measuring device provided in the third embodiment of this application.

[0039] Figure 6 shows a schematic diagram of the structure of a radiation energy measuring device provided in the fourth embodiment of this application.

[0040] Figure 7 shows a schematic diagram of the structure of a radiation energy measuring device provided in the fifth embodiment of this application.

[0041] Explanation of reference numerals in the attached drawings: 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 Implementation

[0042] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other.

[0043] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. Therefore, the drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0044] To facilitate understanding of the technical solutions provided in this application, the relevant terms in this application are explained before the specific embodiments, as follows:

[0045] X-ray energy 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 quantity of X-ray photons.

[0046] Normalized energy spectrum distribution: This is a standardized energy spectrum in which the total energy or power of a specific frequency band is adjusted to a unit value in order to compare energy spectrum data under different conditions.

[0047] The embodiments of this application will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementation methods can be combined with each other.

[0048] The following embodiments of this application provide a method for measuring radiation energy. This method involves acquiring reference radiation energies, a first received dose, and a second received dose; constructing an energy correlation factor based on the first and second received doses; constructing an energy calibration curve based on the energy correlation factor and the reference radiation energy corresponding to the energy correlation factor; and acquiring the current first and second received doses, obtaining the current energy correlation factor based on the current first and second received doses, and obtaining the reference radiation energy corresponding to the current energy correlation factor according to the energy calibration curve, which is then used as the current radiation energy. This radiation energy measurement method enables real-time acquisition of the radiation energy emitted by the X-ray source at the X-ray imaging device, which helps the X-ray imaging system generate high-quality CT images based on the current radiation energy.

[0049] Please refer to Figure 1, which shows a schematic flowchart of an embodiment of a radiation energy measurement method provided by the present invention.

[0050] As shown in Figure 1, in this embodiment, the X-ray energy measurement method provided by the present invention is applied to a X-ray imaging device, and the method includes the following steps:

[0051] Step S1: Obtain the reference radiation energies of the X-rays emitted by the X-ray source, and the first and second received doses at the corresponding reference radiation energies;

[0052] The reference radiation energy is the energy of the X-ray before it is attenuated, that is, the radiation energy at which the X-ray source is set to emit X-rays;

[0053] The first received dose is the absorbed dose obtained by the first sensing module receiving the X-rays emitted by the X-ray source; the second received dose is the absorbed dose obtained by the second sensing module receiving the X-rays after they have passed through the first sensing module.

[0054] Optionally, the method for obtaining the reference radiation energy includes: obtaining a set high voltage of the X-ray tube corresponding to the X-ray source, and using the set high voltage as the reference radiation energy.

[0055] For example, if the first sensing module includes a first sensor, then the method for acquiring the first received dose is as follows:

[0056] In the above formula, ε1 represents the first received dose; ω kV =∫N kV (E)dE represents the X-ray energy flux; μ s Indicates the sensor mass attenuation coefficient; ds1 The thickness of the first sensor is represented by E; E represents the energy of the X-ray photon. This indicates the proportion of X-rays absorbed after passing through the first sensor.

[0057] For example, if the first sensing module includes a first sensor and a first filter, and the second sensing module includes a second sensor, then the method for obtaining the second received dose is as follows:

[0058] In the above formula, ε2 represents the second received dose; μ s Indicates the sensor mass attenuation coefficient; d a1 Indicates the thickness of the first filter element; μ a d represents the filter mass attenuation coefficient; s2 The thickness of the second sensor is represented by E; the energy of the X-ray photon is represented by E. This indicates the proportion of X-ray intensity remaining after passing through the first sensor and the first filter. This indicates the proportion of X-rays absorbed after passing through the second sensor.

[0059] Step S2: Based on the first received dose and the second received dose, construct an energy correlation factor; based on the energy correlation factor and the reference radiation energy, construct an energy calibration curve of the energy correlation factor as a function of the reference radiation energy;

[0060] 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 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; based on the first distribution, a fitting process is performed to obtain a first fitting curve, which is used as the energy calibration curve.

[0061] Optionally, the fitting process includes: linear fitting and / or nonlinear fitting; wherein, when the corresponding distribution exhibits a linear trend, the fitting process is linear fitting; when the corresponding distribution exhibits a nonlinear trend, the fitting process is nonlinear fitting.

[0062] For example, if 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:

[0063] In the above formula, g represents the energy correlation factor; ε1 represents the first received dose; ε2 represents the second received dose; reducing the energy correlation factor in the above formula yields:

[0064] As can be seen from the above equation, the energy correlation factor is independent of the X-ray energy spectral flux, and because μ s μ a d s1 d a1 and d s2 (The mass attenuation coefficient of the sensor, the mass attenuation coefficient of the filter, the thickness of the first sensor, the thickness of the first filter, and the thickness of the second sensor are all fixed values, respectively. Therefore, the change of the energy correlation factor is only related to the normalized energy spectrum (i.e., the reference radiation energy).

[0065] Step S3: Obtain the current first received dose and the second received dose; based on the current first received dose and the current second received dose, obtain the current energy correlation factor; based on the current energy correlation factor, according to the energy calibration curve, obtain the reference radiation energy corresponding to the current energy correlation factor, as the current radiation energy;

[0066] Wherein, the current radiation energy is the radiation energy of the X-rays currently emitted by the X-ray source.

[0067] 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; and the reference radiation energy corresponding to the current energy correlation factor is obtained from the energy calibration curve as the current radiation energy.

[0068] The above embodiments provide a radiation energy measurement method that acquires various reference radiation energies, 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; constructs an energy calibration curve based on the energy correlation factor and the reference radiation energy corresponding to the energy correlation factor; and acquires 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, which is used as the current radiation energy. This radiation energy measurement method enables real-time acquisition of the radiation energy emitted by the X-ray source at the X-ray imaging device, which helps the X-ray imaging system generate high-quality CT images based on the current radiation energy.

[0069] Please refer to Figure 2, which shows a flowchart of an embodiment of a method for simultaneous measurement of radiation energy and dose provided by the present invention.

[0070] As shown in Figure 2, in this embodiment, the method for synchronously measuring radiation energy and dose provided by the present invention includes: obtaining the current radiation energy using the radiation energy measurement method; and,

[0071] Step S4: Obtain the reference radiation dose corresponding to each of the reference radiation energies; construct a dose correlation factor based on the reference radiation dose and the first received dose; construct a dose calibration curve of the dose correlation factor as a function of the reference radiation energy based on the dose correlation factor and the reference radiation energy.

[0072] The reference radiation dose is the radiation dose of the X-rays before they are attenuated.

[0073] Specifically, the ratio of the reference radiation dose to the first received dose at 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 as the dose correlation factor at 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, a fitting process is performed to obtain a second fitting curve, which is used as the dose calibration curve.

[0074] Optionally, the method for obtaining the reference radiation dose includes: using a standard dosimeter to measure the radiation dose of the X-rays before they are attenuated; or using the Monte Carlo method to simulate the radiation dose of the X-rays before they are attenuated.

[0075] For example, the reference radiation dose is obtained in the following manner:

[0076] In the above formula, ω kV =∫N kV (E)dE represents the X-ray energy flux; Represents the normalized energy spectrum distribution; ∫n kV (E)EdE represents the reference radiation energy.

[0077] For example, if the first sensing module includes a first sensor, the dose correlation factor is constructed as follows:

[0078] In the above formula, α represents the dose correlation factor; ε0 represents the reference radiation dose; ε1 represents the first received dose; ω kV Indicates X-ray energy flux;

[0079] Simplifying the dose-related factor in the above equation, we obtain:

[0080] As can be seen from the above formula, the dose-related factor is independent of the X-ray energy spectral 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 (i.e., the reference radiation energy).

[0081] Step S5: Based on the current radiation energy, according to the dose calibration curve, obtain the dose correlation factor corresponding to the current radiation energy, and use it as the current dose correlation factor; based on the current dose correlation factor and the current first received dose, obtain the current radiation dose;

[0082] Wherein, the current radiation dose is the radiation dose of the X-rays currently emitted by the X-ray source.

[0083] 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.

[0084] The above embodiments provide a method for synchronously measuring radiation energy and dose. This method uses a radiation energy measurement method to obtain the current radiation energy; constructs a dose correlation factor based on a reference radiation dose and a first received dose; constructs a dose calibration curve showing the dose correlation factor changing 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; and 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. This method enables real-time synchronous acquisition of the radiation energy and radiation dose emitted by the X-ray source at the X-ray imaging device, allowing the X-ray imaging device to automatically adjust exposure parameters based on the real-time acquired current radiation dose, thereby optimizing the exposure dose; and performs energy correction based on the real-time acquired current radiation energy, further improving the image quality of the CT images generated by the X-ray imaging system. Please refer to Figure 3, which shows a schematic diagram of a radiation energy measurement device provided by the present invention in one embodiment.

[0085] As shown in Figure 3, in this embodiment, the radiation energy measuring device provided by the present invention includes:

[0086] The first sensing module 1 is used to receive X-rays output from an X-ray source and obtain a first received dose based on the received X-rays output from the X-ray source.

[0087] The second sensing module 2 is used to receive the X-rays after they have passed through the first sensing module, and to obtain a second received dose based on the received X-rays after they have passed through the first sensing module.

[0088] Processing module 3 is connected to the first sensing module, the second sensing module, and the X-ray imaging device. The processing module is used to acquire each reference radiation energy of the X-ray emitted by the X-ray source, and the corresponding first and second received doses at those reference radiation energies; construct an energy correlation factor based on the first received dose and the corresponding second received dose; construct an energy calibration curve of the energy correlation factor as a function of the reference radiation energy based on the energy correlation factor and the reference radiation energy; acquire the current first and second received doses; obtain the current energy correlation factor based on the current first and current second received doses; and, based on the current energy correlation factor and the energy calibration curve, obtain the reference radiation energy corresponding to the current energy correlation factor, use it as the current radiation energy, and send the current radiation energy to the X-ray imaging device.

[0089] The first sensing module 1 and the second sensing module 2 are arranged parallel to each other and spaced apart; the first sensing module 1 is closer to the X-ray source than the second sensing module 2.

[0090] Optionally, each of the reference radiation energies and the corresponding first and second received doses at the reference radiation energies are pre-stored in the processing module 3.

[0091] Optionally, as shown in FIG4, 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.

[0092] Optionally, as shown in FIG5, the second sensing 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 sensing module 1 to obtain the second received dose.

[0093] Optionally, as shown in Figure 6, the second sensing module 2 further 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 sensing module 2 and the second sensor 21, so as to avoid the X-rays from scattering after passing through the second sensor 21, reduce the interference of scattered photons, improve the accuracy and reliability of the obtained second received dose, and thus improve the accuracy of the X-ray energy measurement emitted by the X-ray source.

[0094] Optionally, as shown in Figure 7, the device further includes a housing 4, in which the first sensing module 1 and the second sensing module 2 are disposed, to protect the first sensing module 1 and the second sensing module 2 from damage caused by external force collision.

[0095] Optionally, the sensing surfaces of the first sensing module 1 and the second sensing module 2 are the radiation receiving surfaces of the first sensor 11 and the second sensor 22, respectively.

[0096] Optionally, both the first sensor 11 and the second sensor 21 are X-ray detectors; the X-ray detector converts the received X-ray radiation into electric charge through the ionization effect, and obtains the received X-ray dose by measuring the amount of electric charge.

[0097] Optionally, the thicknesses of the first sensor, the first filter, and the second sensor are determined in advance based on actual or simulated experiments, so as to obtain the first received dose and the second received dose that meet the preset calibration requirements based on the first sensor, the first filter, and the second sensor at the 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 the preset slope range.

[0098] Optionally, the first sensor 11 and the second sensor 21 have the same model.

[0099] Optionally, the first filter element 12 and the second filter element 22 are made of the same material.

[0100] Optionally, the radiation energy measuring device is placed on the radiation receiving surface of the radiation imaging device and is located at a preset distance from the imaging area of ​​the radiation imaging device to avoid affecting the X-ray reception of the imaging area of ​​the radiation imaging device and reducing the quality of the CT image generated by the radiation imaging device.

[0101] For example, the radiation energy measuring device is positioned at the upper left, lower left, upper right, or lower right corner of the radiation receiving surface of the radiation imaging device.

[0102] Optionally, the X-ray imaging device includes a flat panel detector.

[0103] Optionally, the distance between the first sensing module and the second sensing module is less than or equal to a preset distance threshold.

[0104] This embodiment provides a radiation energy measurement device that acquires the reference radiation energies of X-rays emitted by an X-ray source, and the corresponding first and second received doses at those reference radiation energies, through a processing module. Based on the first and second received doses, an energy correlation factor is constructed. Based on the energy correlation factor and the reference radiation energy corresponding to the energy correlation factor, an energy calibration curve is constructed. Furthermore, by setting a first and a second sensing module, the current first and second received doses are obtained using the first and second sensing modules respectively. Based on the current first and second received doses, the current energy correlation factor is obtained. Based on the energy calibration curve and the current energy correlation factor, the current radiation energy corresponding to the X-ray source is obtained. This radiation energy measurement device can achieve real-time acquisition of the radiation energy emitted by the X-ray source at the X-ray imaging equipment end, which helps X-ray imaging systems such as DR, CBCT, and / or CT to generate high-quality CT images based on the current radiation energy.

[0105] Correspondingly, the present invention also provides a device for simultaneous measurement of radiation energy and dose; the difference between the device for simultaneous measurement of radiation energy and dose and the device for measuring radiation energy is that:

[0106] The processing module 3 is further configured to: acquire the reference radiation dose corresponding to each of the reference radiation energies; construct a dose correlation factor based on the reference radiation dose and the first received dose; construct a dose calibration curve of the dose correlation factor as a function of the reference radiation energy based on the dose correlation factor and the reference radiation energy; obtain the current dose correlation factor based on the current radiation energy and 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.

[0107] Optionally, the method for obtaining the reference radiation dose in the processing module 3 includes: pre-storing the reference radiation dose corresponding to each reference radiation energy in the processing module 3.

[0108] This application also provides a computer-readable storage medium. Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing a processor. The program can be stored in a computer-readable storage medium, which is a non-transitory medium, such as random access memory, read-only memory, flash memory, hard disk, solid-state drive, magnetic tape, floppy disk, optical disk, and any combination thereof. The storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., digital video disc (DVD)), or a semiconductor medium (e.g., solid-state drive (SSD)).

[0109] This application embodiment may also provide a computer program product comprising one or more computer instructions. When the computer instructions are loaded and executed on a computing device, all or part of the processes or functions described in this application embodiment are generated. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means.

[0110] When the computer program product is executed by a computer, the computer performs the method described in the foregoing method embodiments. The computer program product can be a software installation package; when the foregoing method is required, the computer program product can be downloaded and executed on the computer.

[0111] The descriptions of the processes or structures corresponding to the above figures each have their own emphasis. For parts of a process or structure that are not described in detail, please refer to the relevant descriptions of other processes or structures.

[0112] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A method for measuring radiation energy, characterized in that, include: Obtain each reference radiation energy of the X-ray emitted by the X-ray source, and the corresponding first and second received doses at the reference radiation energies; An energy correlation factor is constructed based on the first received dose and the second received dose; Based on the energy correlation factor and the reference radiation energy, an energy calibration curve is constructed to show the change of the energy correlation factor with the reference radiation energy. Obtain the current first received dose and the second received dose; 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, and according to the energy calibration curve, the reference radiation energy corresponding to the current energy correlation factor is obtained as the current radiation energy; Wherein, the first received dose is the radiation dose obtained by the first sensing module receiving the X-rays emitted by the X-ray source; The second received dose is the radiation dose obtained by the second sensing module after receiving the X-rays that have passed through the first sensing module.

2. The method according to claim 1, characterized in that, The construction of 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; the ratio of each second received dose to the corresponding first received dose is calculated 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 for the energy correlation factor as a function of the reference radiation energy, based on the energy correlation factor and the reference radiation energy, includes: Based on each of the energy correlation factors and each of the reference radiation energies, a first distribution of each of the energy correlation factors on the reference radiation energy is obtained according to the correspondence between the energy correlation factors and the reference radiation energy; a fitting process is performed based on the first distribution to obtain a first fitting curve, which is used as the energy calibration curve.

4. A method for synchronously measuring radiation energy and dose, characterized in that, include: The current radiation energy is obtained by using the radiation energy measurement method as described in claims 1 to 3; as well as, Obtain the reference radiation dose corresponding to each reference radiation energy; A dose correlation factor is constructed based on the reference radiation dose and the first received dose; Based on the dose correlation factor and the reference radiation energy, a dose calibration curve is constructed that describes the change of the dose correlation factor with the reference radiation energy. Based on the current radiation energy, according to the dose calibration curve, a dose correlation factor corresponding to the current radiation energy is obtained, which is used as the current dose correlation factor; The current radiation dose is obtained based on the current dose correlation 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 correlation factor; the ratio of each reference radiation dose to the corresponding first received dose is calculated and used as the corresponding dose correlation factor.

6. The method according to claim 4, characterized in that, The step of constructing a dose calibration curve of the dose correlation factor as a function of the reference radiation energy, based on the dose correlation factor and the reference radiation energy, includes: 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, a fitting process is performed to obtain a second fitting curve, which is used as the dose calibration curve.

7. A radiation energy measuring device, characterized in that, include: The first sensing module is used to receive X-rays emitted by an X-ray source and obtain a first received dose based on the received X-rays output by the X-ray source. The second sensing module is used to receive the X-rays after they pass through the first sensing module, and to obtain a second received dose based on the received X-rays after they pass through the first sensing module. A processing module is connected to the first sensing module, the second sensing module, and the X-ray imaging device, respectively; the processing module is used to obtain the current radiation energy using the X-ray energy measurement method as described in claims 1 to 3, and send the current radiation energy to the X-ray imaging device; The first sensing module and the second sensing module are arranged in parallel and spaced apart.

8. The apparatus according to claim 7, characterized in that, The first sensing module includes: 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 that have passed through the first sensor.

9. The apparatus according to claim 7 or 8, characterized in that, The second sensing module includes at least: 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 apparatus according to claim 7, characterized in that, The distance between the first sensing module and the second sensing module is less than a preset distance threshold.

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