X-ray source dose distribution testing method and system

Abstract

The present application provides an X-ray source dose distribution testing method and system, which includes obtaining the target position of the target ray source, adjusting the center point of the xOy rotating lifting platform to coincide with the target position of the target ray source; adjusting the position of the yOz rotating telescopic arm so that the distance between the dose tester and the target position of the target ray source is the same as the target measurement distance; then obtaining the first target rotation angle of the xOy rotating lifting platform and the second target rotation angle of the yOz rotating telescopic arm, and obtaining the target spatial position of the measurement point according to each rotation angle; finally, adjusting the xOy rotating lifting platform and the yOz rotating telescopic arm according to the first and second target rotation angles respectively, so as to measure the X-ray dose value of the measurement point at the target spatial position through the dose tester. Only one dose tester is needed to complete all X-ray dose value testing work, and the measurement efficiency is high.

Description

Technical Field

[0001] The present application relates to the field of X-ray imaging technology, and in particular to an X-ray source dose distribution testing method and system. Background Art

[0002] X-rays are electromagnetic waves with extremely high frequencies, short wavelengths, and high energy. Besides their medical applications, X-rays are also commonly used for non-destructive testing in the industrial sector, such as in high-tech industries like electronics and semiconductors, lithium-ion batteries, and new energy, as well as in other areas such as pan-industrial non-destructive testing, public safety, and foreign body detection.

[0003] The radiation generated by an X-ray source is usually expressed in terms of dose values, which are generally symmetrically normally distributed in space from the center point to the surrounding areas. The projection surface at the same distance from the radiation source target is circular or elliptical, with the dose value at the center of the circle being the largest and gradually decreasing from the center to the surrounding areas until it is the smallest. Therefore, in applications in the field of X-ray imaging, due to the overall uneven distribution of X-ray dose values, the final imaging requires dose value calibration to ensure image quality. In applications with high image requirements, such as medical CT or industrial CT, multiple detection devices are generally placed at equal intervals in the direction of the radiation generated by the radiation source, and the multiple detection devices are used to measure the dose value of each point in the direction of the radiation in real time.

[0004] However, in the above scheme, the method of placing multiple detection devices at equal intervals for real-time measurement is time-consuming, and the test equipment is complex and not universal, making it inconvenient to use. Summary of the Invention

[0005] The present application provides an X-ray source dose distribution testing method and system, which only requires one dose tester to complete all testing work with high efficiency. The technical solution is as follows.

[0006] In one aspect, a method for testing X-ray source dose distribution is provided. The method is performed by a computer device in an X-ray source dose distribution testing system. The system also includes a dose tester, an xOy rotary lifting platform, and a yOz rotary telescopic arm; the dose tester is fixed to the end of the upper arm of the yOz rotary telescopic arm;

[0007] The method comprises:

[0008] Obtaining the target point position of the target ray source;

[0009] Adjusting the position of the xOy rotating lifting platform so that the center point of the xOy rotating lifting platform coincides with the target point position of the target ray source;

[0010] Adjusting the position of the yOz rotating telescopic arm so that the distance between the dose meter and the target position of the target radiation source is the same as the target measurement distance;

[0011] Obtaining a first target rotation angle of the xOy rotary lifting platform and a second target rotation angle of the yOz rotary telescopic arm;

[0012] Acquiring a target spatial position of a measurement point according to the first target rotation angle and the second target rotation angle; the distance between the measurement point and the target position of the target ray source is the target measurement distance;

[0013] The xOy rotary lifting platform is adjusted according to the first target rotation angle, and the yOz rotary telescopic arm is adjusted according to the second target rotation angle, so that the dose tester can measure the X-ray dose value of the measurement point at the target spatial position.

[0014] In yet another aspect, an X-ray source dose distribution testing system is provided, the system comprising: a computer device, a dose tester, an xOy rotary lifting platform, and a yOz rotary telescopic arm;

[0015] The computer device is respectively connected to the dose tester, the xOy rotary lifting platform and the yOz rotary telescopic arm;

[0016] The yOz rotating telescopic arm includes an upper arm and a lower arm with adjustable lengths, and the dose tester is fixed to the end of the upper arm;

[0017] Wherein, the computer device is used to:

[0018] Obtaining the target point position of the target ray source;

[0019] Adjusting the position of the xOy rotating lifting platform so that the center point of the xOy rotating lifting platform coincides with the target point position of the target ray source;

[0020] Adjusting the position of the yOz rotating telescopic arm so that the distance between the dose meter and the target position of the target radiation source is the same as the target measurement distance;

[0021] Obtaining a first target rotation angle of the xOy rotary lifting platform and a second target rotation angle of the yOz rotary telescopic arm;

[0022] Acquiring a target spatial position of a measurement point according to the first target rotation angle and the second target rotation angle; the distance between the measurement point and the target position of the target ray source is the target measurement distance;

[0023] The xOy rotary lifting platform is adjusted according to the first target rotation angle, and the yOz rotary telescopic arm is adjusted according to the second target rotation angle, so that the dose tester can measure the X-ray dose value of the measurement point at the target spatial position.

[0024] In a possible implementation, a cross mark is provided at the center point of the xOy rotary lifting platform, and the cross mark is used to calibrate the target point position of the target ray source.

[0025] In a possible embodiment, an adjustable limit block is further provided on the xOy rotary lifting platform, and the adjustable limit block is used to adjust according to the target position of the target ray source to ensure that the target position of the target ray source is at the center point of the cross mark.

[0026] In another aspect, an X-ray source dose distribution test device is provided, the device being applied to a computer device in an X-ray source dose distribution test system, the system further comprising a dose tester, an xOy rotary lifting platform, and a yOz rotary telescopic arm; the dose tester being fixed to the end of the upper arm of the yOz rotary telescopic arm;

[0027] The device comprises:

[0028] A target position acquisition module is used to obtain the target position of the target ray source;

[0029] a first adjustment module, configured to adjust the position of the xOy rotating lifting platform so that the center point of the xOy rotating lifting platform coincides with the target point position of the target ray source;

[0030] A second adjustment module is used to adjust the position of the yOz rotating telescopic arm so that the distance between the dose tester and the target position of the target radiation source is the same as the target measurement distance;

[0031] A rotation angle acquisition module, configured to acquire a first target rotation angle of the xOy rotary lifting platform and a second target rotation angle of the yOz rotary telescopic arm;

[0032] a target spatial position acquisition module, configured to acquire a target spatial position of a measurement point according to the first target rotation angle and the second target rotation angle; the measurement point and the target position of the target ray source are separated by the target measurement distance;

[0033] The dose value measurement module is used to adjust the xOy rotary lifting platform according to the first target rotation angle, and to adjust the yOz rotary telescopic arm according to the second target rotation angle, so as to measure the X-ray dose value of the measurement point at the target spatial position through the dose tester.

[0034] In a possible implementation, the first target rotation angle includes various first candidate rotation angles; the second target rotation angle includes various second candidate rotation angles;

[0035] The rotation angle acquisition module is further used to:

[0036] Obtaining a first target rotation angle of the xOy rotary lifting platform and respective second candidate rotation angles of the yOz rotary telescopic arm corresponding to the first target rotation angle;

[0037] A second target rotation angle of the yOz rotary telescopic arm and first candidate rotation angles of the xOy rotary lifting platform corresponding to the second target rotation angle are obtained.

[0038] In a possible implementation, the target spatial position acquisition module includes:

[0039] According to the first target rotation angle, the respective second candidate rotation angles, and the target measurement distance, the target spatial position of each measurement point when the rotation angle of the xOy rotary lifting platform is fixed is acquired.

[0040] In a possible implementation, the target spatial position acquisition module is further configured to:

[0041] According to the second target rotation angle, the first candidate rotation angles, and the target measurement distance, the target spatial position of each measurement point when the rotation angle of the yOz rotating telescopic arm is fixed is obtained.

[0042] On the other hand, a computer device is provided, which includes a processor and a memory, wherein the memory stores at least one instruction, and the at least one instruction is loaded and executed by the processor to implement the X-ray source dose distribution testing method as described above.

[0043] On the other hand, a computer-readable storage medium is provided, wherein the storage medium stores at least one instruction, and the at least one instruction is loaded and executed by a processor to implement the X-ray source dose distribution testing method as described above.

[0044] The technical solution provided by this application may have the following beneficial effects:

[0045] First, the target position of the target ray source is obtained, and the position of the xOy rotating lifting platform is adjusted so that the center point of the xOy rotating lifting platform coincides with the target position of the target ray source; then the position of the yOz rotating telescopic arm is adjusted so that the distance between the dose tester and the target position of the target ray source is the same as the target measurement distance; then the first target rotation angle of the xOy rotating lifting platform and the second target rotation angle of the yOz rotating telescopic arm are obtained, and the target spatial position of the measuring point is obtained according to the first target rotation angle and the second target rotation angle; finally, the xOy rotating lifting platform is adjusted according to the first target rotation angle, and the yOz rotating telescopic arm is adjusted according to the second target rotation angle, so that the X-ray dose value of the measuring point at the target spatial position is measured by the dose tester. The above scheme only requires one dose tester to complete all the testing work of the X-ray dose value, which is efficient and can effectively solve the shortcomings of poor positioning accuracy, complex system, and long measurement time of traditional measurement, and can adapt to ray sources of different sizes to automatically complete spatial dose measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0047] Figure 1 It is a structural schematic diagram of an X-ray source dose distribution testing system according to an exemplary embodiment.

[0048] Figure 2 It is a schematic structural diagram of a rotating platform table according to an exemplary embodiment.

[0049] Figure 3 The figure is a flow chart of a method for testing an X-ray source dose distribution according to an exemplary embodiment.

[0050] Figure 4 The figure is a flow chart of a method for testing an X-ray source dose distribution according to an exemplary embodiment.

[0051] Figure 5 3 is a schematic diagram of the spatial coordinates of any measuring point P on a spherical surface at an equal distance R from the center of the circle according to an exemplary embodiment.

[0052] Figure 6 The figure is a structural block diagram of an X-ray source dose distribution testing device according to an exemplary embodiment.

[0053] Figure 7 A structural block diagram of a computer device shown in an exemplary embodiment of the present application is shown.

[0054] Among them, 1-dose tester; 2-xOy rotary lifting platform; 3-xOy platform lifting device; 4-yOz rotary telescopic arm; 5-computer equipment; 21-cross mark; 22-adjustable limit block. DETAILED DESCRIPTION

[0055] The following will clearly and completely describe the technical solution of this application in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0056] It should be understood that in the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0057] Figure 1 FIG1 is a schematic diagram of a structure of an X-ray source dose distribution test system according to an exemplary embodiment. The system includes a computer device 5, a dose tester 1, an xOy rotary lifting platform 2, and a yOz rotary telescopic arm 4.

[0058] The computer device is respectively connected to the dosage tester 1, the xOy rotary lifting platform 2 and the yOz rotary telescopic arm 4;

[0059] The yOz rotating telescopic arm 4 includes an upper arm and a lower arm with adjustable lengths, and the dosage tester 1 is fixed to the end of the upper arm;

[0060] The computer device 5 is used for:

[0061] Obtaining the target point position of the target ray source;

[0062] Adjusting the position of the xOy rotating lifting platform 2 so that the center point of the xOy rotating lifting platform 2 coincides with the target point position of the target ray source;

[0063] The position of the yOz rotating telescopic arm 4 is adjusted so that the distance between the dose tester 1 and the target position of the target radiation source is the same as the target measurement distance;

[0064] Obtaining a first target rotation angle of the xOy rotary lifting platform 2 and a second target rotation angle of the yOz rotary telescopic arm 4;

[0065] Obtaining a target spatial position of a measurement point according to the first target rotation angle and the second target rotation angle; the distance between the measurement point and the target position of the target ray source is the target measurement distance;

[0066] The xOy rotary lifting platform 2 is adjusted according to the first target rotation angle, and the yOz rotary telescopic arm 4 is adjusted according to the second target rotation angle, so that the dose tester 1 measures the X-ray dose value of the measuring point at the target spatial position.

[0067] Optionally, the dose tester 1 may be a photodiode detection plate or an ionization chamber, which is used to measure the X-ray dose value at each measuring point at each target spatial position.

[0068] Optionally, the system further includes an xOy platform lifting device 3 , which is disposed below the xOy rotary lifting platform 2 and is used to control the lifting operation of the xOy rotary lifting platform 2 .

[0069] Optionally, the xOy rotary lifting platform 2 can realize 360° rotation of the rotary platform xy plane. Here, the rotation angle θ of the xOy rotary lifting platform 2, ie, the above-mentioned first target rotation angle, can be set using operating software.

[0070] Optionally, the lengths of the upper arm and the lower arm of the yOz rotating telescopic arm 4 are adjustable, the upper arm and the lower arm are connected together at a right angle, and a bracket is fixed at the angle between the upper arm and the lower arm, such as Figure 1 As shown, the structure of the yOz rotating telescopic arm 4 is in an "A" shape to ensure the stability and fixity of the yOz rotating telescopic arm 4.

[0071] Optionally, the rotation angle of the yOz rotating telescopic arm 4 can be set using the operating software That is the second target rotation angle mentioned above.

[0072] In a possible implementation, please refer to Figure 2 The structural diagram of the rotating platform table is shown in FIG. Figure 2 As shown, a cross mark 21 is provided at the center point of the rotating platform table of the xOy rotating lifting platform 2, and the cross mark 21 is used to calibrate the target point position of the target ray source.

[0073] In one possible implementation, Figure 2 As shown, the xOy rotary lifting platform 2 is further provided with an adjustable limit block 22 , which is used to adjust according to the target position of the target ray source to ensure that the target position of the target ray source is at the center point of the cross mark 21 .

[0074] Optionally, two adjustable limit blocks 22 are provided.

[0075] Optionally, the dose tester 1, the xOy rotary lifting platform 2, the xOy platform lifting device 3 and the yOz rotary telescopic arm 4 can be communicated with the computer device 5 through a transmission network (such as a wireless communication network). The computer device 5 can control the xOy rotary lifting platform 2, the xOy platform lifting device 3 and the yOz rotary telescopic arm 4 according to the preset first target rotation angle, the second target rotation angle and the target measurement distance, so that the center point of the xOy rotary lifting platform 2 coincides with the target position of the target ray source, the distance between the dose tester 1 and the target position of the target ray source is the same as the target measurement distance, and the dose tester 1 is controlled to measure the X-ray dose value of each measurement point. In addition, the dose tester 1 can also upload the measurement data to the computer device 5 through the wireless communication network, so that the computer device 5 can process and analyze the collected measurement data.

[0076] Optionally, the above-mentioned computer device 5 can also be a server, which can be a server cluster or a distributed system composed of multiple physical servers, or a cloud server that provides cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN, as well as big data and artificial intelligence platforms and other technical operations and computing services.

[0077] Optionally, the system may further include a management device for managing the system (such as managing the connection status between each device and the server, etc.), and the management device and the server are connected via a communication network. Optionally, the communication network is a wired network or a wireless network.

[0078] Optionally, the above-mentioned wireless network or wired network uses standard communication technology and / or protocol. The network is typically the Internet, but may also be any other network, including but not limited to any combination of a local area network, a metropolitan area network, a wide area network, a mobile, a limited or wireless network, a private network, or a virtual private network. In some embodiments, the data exchanged over the network is represented using technologies and / or formats including hypertext markup language, extensible markup language, etc. In addition, conventional encryption technologies such as secure socket layer, transport layer security, virtual private network, internet protocol security, etc. may be used to encrypt all or some links. In other embodiments, customized and / or dedicated data communication technologies may also be used to replace or supplement the above-mentioned data communication technologies.

[0079] Figure 3 This is a flow chart of a method for testing X-ray source dose distribution according to an exemplary embodiment. Figure 1 The computer device 1 in the X-ray source dose distribution test system shown in the figure is executed. The system also includes a dose tester, an xOy rotary lifting platform and a yOz rotary telescopic arm; the dose tester is fixed to the end of the upper arm of the yOz rotary telescopic arm, as shown in FIG. Figure 3 As shown, the method may include the following steps:

[0080] S301: Acquire the target point position of the target ray source.

[0081] In one possible embodiment, when measuring the dose value of the target ray source, the target position of the target ray source is first determined according to the computer equipment, so as to adjust the position of the xOy rotating lifting platform according to the target position of the target ray source. When the center point of the xOy rotating lifting platform coincides with the target position of the target ray source, the emitting device of the target ray source is placed on the center point of the xOy rotating lifting platform, and the target ray source is turned on to perform the measurement operation.

[0082] S302: Adjust the position of the xOy rotating lifting platform so that the center point of the xOy rotating lifting platform coincides with the target point position of the target ray source.

[0083] In one possible embodiment, after obtaining the target position of the target ray source, it is necessary to first align the center point of the xOy rotating lifting platform with the target position of the target ray source, that is, according to the target position of the target ray source, the position of the xOy rotating lifting platform is raised and lowered so that the center point of the xOy rotating lifting platform coincides with the target point of the target ray source (the target point of the target ray source is located on the center point of the xOy rotating lifting platform).

[0084] S303: Adjust the position of the yOz rotating telescopic arm so that the distance between the dose tester and the target position of the target ray source is the same as the target measurement distance.

[0085] In one possible embodiment, after the center point of the xOy rotating lifting platform is aligned with the target point of the target ray source, since the target point of the target ray source is at the same distance, its projection surface is circular or elliptical, and the dose value at the target point position (center of the circle) of the target ray source is the largest, and the dose value from the center of the circle to the surrounding areas gradually decays until it is minimum. To measure the dose value in the direction of emitting rays from the center of the circle to the surrounding areas, it is necessary to first determine the target measurement distance from the center of the circle, and adjust the height of the dose tester from the target point of the target ray source through the xOy rotating lifting platform so that the height of the dose tester from the target point of the target ray source is the same as the target measurement distance, thereby enabling the dose tester to measure the dose value of each measurement point at the target measurement distance from the center of the circle.

[0086] Furthermore, the target measurement distance may be preset.

[0087] S304: Obtain a first target rotation angle of the xOy rotary lifting platform and a second target rotation angle of the yOz rotary telescopic arm.

[0088] In a possible embodiment, since the projection surface of the target point of the target ray source is circular or elliptical under the condition of the same distance, the projection surface of the target point of the target ray source is circular or elliptical under the condition of the target measurement distance from the center of the circle, that is, what needs to be measured are the various measurement points on the surface of the sphere with the target position of the target ray source as the center of the circle and the target measurement distance as the radius. When the dose value of the target measurement point in any direction on the surface of the sphere is to be measured, the first target rotation angle of the xOy rotating lifting platform and the second target rotation angle of the yOz rotating telescopic arm are determined, and the position of the target measurement point in space is obtained to adjust the angle of the xOy rotating lifting platform and the yOz rotating telescopic arm.

[0089] S305 : Acquire a target spatial position of a measurement point according to the first target rotation angle and the second target rotation angle; the measurement point and the target position of the target ray source are separated by the target measurement distance.

[0090] In a possible embodiment, since the coordinates of the target measurement point in space are three-dimensional, the first target rotation angle is the rotation angle of the xOy rotary lifting platform on the xy plane, and the second target rotation angle is the rotation angle of the yOz rotary telescopic arm on the yz plane. Therefore, the target spatial position of the target measurement point can be determined based on the rotation angle on the xy plane and the rotation angle on the yz plane.

[0091] S306. Adjust the xOy rotary lifting platform according to the first target rotation angle, and adjust the yOz rotary telescopic arm according to the second target rotation angle, so as to measure the X-ray dose value at the measuring point at the target spatial position through the dose tester.

[0092] In one possible embodiment, after obtaining the target spatial position of the target measurement point, the xOy rotary lifting platform is rotated by a first target rotation angle, and the yOz rotary telescopic arm is rotated by a second target rotation angle, so that the dose tester on the upper arm of the yOz rotary telescopic arm and the target measurement point at the target spatial position are adjusted to the same position, thereby enabling the dose tester to measure the X-ray dose value of the target measurement point at the target spatial position.

[0093] Similarly, by obtaining the target spatial position of each measurement point on the surface of a sphere with the target position of the target ray source as the center and the target measurement distance as the radius, the X-ray dose value of each measurement point can be measured. When it is necessary to measure the X-ray dose value of the measurement point at other distances from the target position of the target ray source, it is only necessary to adjust the target measurement distance.

[0094] To sum up, the target position of the target ray source is first obtained, and the position of the xOy rotating lifting platform is adjusted so that the center point of the xOy rotating lifting platform coincides with the target position of the target ray source; the position of the yOz rotating telescopic arm is then adjusted so that the distance between the dose tester and the target position of the target ray source is the same as the target measurement distance; then the first target rotation angle of the xOy rotating lifting platform and the second target rotation angle of the yOz rotating telescopic arm are obtained, and the target spatial position of the measuring point is obtained according to the first target rotation angle and the second target rotation angle; finally, the xOy rotating lifting platform is adjusted according to the first target rotation angle, and the yOz rotating telescopic arm is adjusted according to the second target rotation angle, so that the X-ray dose value of the measuring point at the target spatial position is measured by the dose tester. The above scheme only requires one dose tester to complete all the testing work of the X-ray dose value, which is efficient and can effectively solve the shortcomings of poor traditional measurement positioning accuracy, complex system, and long measurement time, and can adapt to ray sources of different sizes to automatically complete spatial dose measurement.

[0095] Figure 4 This is a flow chart of a method for testing X-ray source dose distribution according to an exemplary embodiment. Figure 1 The computer device 1 in the X-ray source dose distribution test system shown in the figure is executed. The system also includes a dose tester, an xOy rotary lifting platform and a yOz rotary telescopic arm; the dose tester is fixed to the end of the upper arm of the yOz rotary telescopic arm, as shown in FIG. Figure 4 As shown, the method may include the following steps:

[0096] S401: Acquire the target point position of the target ray source.

[0097] S402: Adjust the position of the xOy rotating lifting platform so that the center point of the xOy rotating lifting platform coincides with the target point position of the target ray source.

[0098] In one possible implementation, by Figure 1The xOy platform lifting device 3 controls the lifting and lowering of the xOy rotary lifting platform, so that the center point of the xOy rotary lifting platform coincides with the target position of the target ray source. After the coincidence is achieved, the emitting device of the target ray source is placed on the center point of the xOy rotary lifting platform, the target ray source is turned on, and subsequent measurement operations are performed.

[0099] S403: Adjust the position of the yOz rotating telescopic arm so that the distance between the dose tester and the target position of the target ray source is the same as the target measurement distance.

[0100] In one possible embodiment, since the dose meter is arranged at the end of the upper arm of the yOz rotating telescopic arm, in order to measure the measuring point by the dose meter, it is necessary to adjust the position of the yOz rotating telescopic arm according to the distance between the measuring point and the target position of the target ray source, so as to adjust the dose meter to a position at a target measurement distance from the target position of the target ray source.

[0101] S404: Acquire a first target rotation angle of the xOy rotary lifting platform and each second candidate rotation angle of the yOz rotary telescopic arm corresponding to the first target rotation angle.

[0102] S405: Acquire a second target rotation angle of the yOz rotary telescopic arm and first candidate rotation angles of the xOy rotary lifting platform corresponding to the second target rotation angle.

[0103] Furthermore, the above steps have obtained that the measured points are various measurement points on the surface of a sphere with the target position of the target ray source as the center and the target measurement distance as the radius. Since each measurement point is on the spatial coordinate, it is necessary to set the rotation angle of the xOy rotating lifting platform and the yOz rotating telescopic arm to obtain the target spatial position or target spatial coordinates of the measured measurement point through the rotation angle of the xOy rotating lifting platform and the yOz rotating telescopic arm.

[0104] In a possible implementation, the first target rotation angle includes various first candidate rotation angles, and the second target rotation angle includes various second candidate rotation angles.

[0105] For example, if the rotation angle of the xOy rotating lifting platform is the first target rotation angle, and if the rotation angle of the yOz rotating telescopic arm is the second target rotation angle, when the rotation angle of the xOy rotating lifting platform is fixed, that is, the first target rotation angle remains unchanged, each second candidate rotation angle is obtained, and the second candidate rotation angle is the each changing second target rotation angle, so as to obtain the target spatial position of each measurement point when the rotation angle of the xOy rotating lifting platform is fixed based on the first target rotation angle, the each second candidate rotation angle and the target measurement distance.

[0106] When the rotation angle of the yOz rotating telescopic arm is fixed, that is, the second target rotation angle remains unchanged, each first candidate rotation angle is obtained, and the first candidate rotation angle is the each changing first target rotation angle, so as to obtain the target spatial position of each measurement point when the rotation angle of the yOz rotating telescopic arm is fixed based on the second target rotation angle, the each first candidate rotation angle and the target measurement distance.

[0107] In summary, by obtaining the target spatial position of each measurement point when the rotation angle of the xOy rotating lifting platform is fixed, and by obtaining the target spatial position of each measurement point when the rotation angle of the yOz rotating telescopic arm is fixed, the target spatial position of each measurement point on the surface of the sphere with the target position of the target ray source as the center and the target measurement distance as the radius can be obtained.

[0108] S406. According to the first target rotation angle, the second candidate rotation angles, and the target measurement distance, the target spatial position of each measurement point when the rotation angle of the xOy rotating lifting platform is fixed is obtained; each measurement point is at the target measurement distance from the target position of the target ray source.

[0109] Furthermore, the dose value at the measurement point is inversely proportional to the square of the distance from the measurement point to the target position of the target radiation source. Therefore, the dose distribution of each measurement point on the sphere at the same distance R (i.e., the target measurement distance) from the center of the circle (i.e., the target position) is representative. Please refer to Figure 5 The diagram shows the spatial coordinates of any measuring point P on the spherical surface at an equal distance R from the center of the circle, as shown in Figure 5 As shown, with the target position of the target ray source as the center O, any measuring point P (x, y, z) in space at a distance R from the target position (i.e., the target measurement distance mentioned above) has x 2 +y 2 +z 2 =R 2 , then the corresponding parameter equations of each measurement point P are as follows:

[0110]

[0111] Where R represents the target measurement distance mentioned above, represents the second target rotation angle, θ represents the first target rotation angle; based on the operating software, R, θ is set, the radiation source is turned on to measure the dose value J corresponding to any measuring point P in the radiation source space. After the measurement is completed, the radiation dose value of each point on the spherical surface with a radius of R in space can be obtained based on the dose value of each measuring point P.

[0112] S407 : Acquire target spatial positions of respective measurement points when the rotation angle of the yOz rotating telescopic arm is fixed according to the second target rotation angle, the respective first candidate rotation angles, and the target measurement distance.

[0113] Optionally, in another embodiment, a first candidate rotation angle may be determined first, and then the first candidate rotation angle may be combined with each second candidate rotation angle to obtain the target spatial position of each measurement point under the condition that the first candidate rotation angle is fixed and the second candidate rotation angle is changed.

[0114] Next, a second first candidate rotation angle is obtained, and the second first candidate rotation angle is combined with each second candidate rotation angle to obtain the target spatial position of each measurement point corresponding to the condition that the second first candidate rotation angle is fixed and the second candidate rotation angle is varied;

[0115] Similarly, the target spatial positions of the corresponding measurement points are obtained under the condition that the first candidate rotation angles are fixed and the second candidate rotation angles are changed; thereby obtaining the target spatial positions of all measurement points on the spherical surface with the target position of the target ray source as the center and the spatial radius R.

[0116] For example, set the initial target ray source initial angle 1 value θ1 (ie, the first candidate rotation angle mentioned above), control the yOz rotation telescopic arm angle 2 value (i.e., the first second candidate rotation angle mentioned above), the dose value J11 can be measured, and its corresponding spatial position P (x11, y11, z11) is as follows:

[0117]

[0118] Continue to maintain the target ray source initial angle 1 value θ1 (that is, the first candidate rotation angle mentioned above), and control the yOz rotation telescopic arm angle 2 value (i.e., the second candidate rotation angle mentioned above), the dose value J12 can be measured, and its corresponding spatial position is P(x12, y12, z12) as follows:

[0119]

[0120] The dose value J1n is measured in this way, and its corresponding spatial position P(x1n, y1n, z1n) is as follows:

[0121]

[0122] Similarly, set the target ray source initial angle 1 value θ2 (i.e. the second first candidate rotation angle mentioned above) to control the yOz rotation telescopic arm angle 2 value (i.e., the first second candidate rotation angle mentioned above), the dose value J11 can be measured, and the corresponding spatial position P (x21, y21, z21) is as follows:

[0123]

[0124] Set the target ray source initial angle 1 value θ2 (i.e. the second first candidate rotation angle mentioned above), and control the yOz rotation telescopic arm angle 2 value (i.e., the second candidate rotation angle mentioned above), the dose value J11 is measured, and the corresponding spatial position P (x22, y22, z22) is as follows:

[0125]

[0126] The dose value J2n is measured in this way, and the corresponding spatial position P(x2n, y2n, z2n) is as follows:

[0127]

[0128] In summary, the Jnn dose value can be obtained, and the corresponding spatial position P (xnn, ynn, znn) is as follows:

[0129]

[0130] Thus, the target spatial positions of all measurement points on the spherical surface with a radius R and a target point position of the target ray source as the center of the circle can be obtained.

[0131] S408. Adjust the xOy rotary lifting platform according to the first target rotation angle, and adjust the yOz rotary telescopic arm according to the second target rotation angle, so as to measure the X-ray dose value of each measurement point at the target spatial position through the dose tester.

[0132] To sum up, the target position of the target ray source is first obtained, and the position of the xOy rotating lifting platform is adjusted so that the center point of the xOy rotating lifting platform coincides with the target position of the target ray source; the position of the yOz rotating telescopic arm is then adjusted so that the distance between the dose tester and the target position of the target ray source is the same as the target measurement distance; then the first target rotation angle of the xOy rotating lifting platform and the second target rotation angle of the yOz rotating telescopic arm are obtained, and the target spatial position of the measuring point is obtained according to the first target rotation angle and the second target rotation angle; finally, the xOy rotating lifting platform is adjusted according to the first target rotation angle, and the yOz rotating telescopic arm is adjusted according to the second target rotation angle, so that the X-ray dose value of the measuring point at the target spatial position is measured by the dose tester. The above scheme only requires one dose tester to complete all the testing work of the X-ray dose value, which is efficient and can effectively solve the shortcomings of poor traditional measurement positioning accuracy, complex system, and long measurement time, and can adapt to ray sources of different sizes to automatically complete spatial dose measurement.

[0133] Figure 6 This is a block diagram of an X-ray source dose distribution test device according to an exemplary embodiment. The device is used as a computer device in an X-ray source dose distribution test system. The system also includes a dose meter, an xOy rotary lifting platform, and a yOz rotary telescopic arm. The dose meter is fixed to the end of the upper arm of the yOz rotary telescopic arm.

[0134] The device includes:

[0135] The target position acquisition module 601 is used to acquire the target position of the target ray source;

[0136] A first adjustment module 602 is configured to adjust the position of the xOy rotating lifting platform so that the center point of the xOy rotating lifting platform coincides with the target point of the target ray source;

[0137] A second adjustment module 603 is used to adjust the position of the yOz rotating telescopic arm so that the distance between the dose tester and the target position of the target radiation source is the same as the target measurement distance;

[0138] A rotation angle acquisition module 604 is used to acquire a first target rotation angle of the xOy rotary lifting platform and a second target rotation angle of the yOz rotary telescopic arm;

[0139] The target spatial position acquisition module 605 is configured to acquire the target spatial position of a measurement point according to the first target rotation angle and the second target rotation angle; the measurement point is the target measurement distance from the target position of the target ray source;

[0140] The dose value measurement module 606 is used to adjust the xOy rotary lifting platform according to the first target rotation angle, and adjust the yOz rotary telescopic arm according to the second target rotation angle, so as to measure the X-ray dose value of the measurement point at the target spatial position through the dose tester.

[0141] In a possible implementation, the first target rotation angle includes various first candidate rotation angles; the second target rotation angle includes various second candidate rotation angles;

[0142] The rotation angle acquisition module 604 is further configured to:

[0143] Obtaining a first target rotation angle of the xOy rotary lifting platform and respective second candidate rotation angles of the yOz rotary telescopic arm corresponding to the first target rotation angle;

[0144] A second target rotation angle of the yOz rotary telescopic arm and first candidate rotation angles of the xOy rotary lifting platform corresponding to the second target rotation angle are obtained.

[0145] In a possible implementation, the target spatial position acquisition module 605 includes:

[0146] According to the first target rotation angle, the second candidate rotation angles, and the target measurement distance, the target spatial position of each measurement point when the rotation angle of the xOy rotary lifting platform is fixed is obtained.

[0147] In a possible implementation, the target spatial position acquisition module 605 is further configured to:

[0148] According to the second target rotation angle, the first candidate rotation angles, and the target measurement distance, the target spatial position of each measurement point when the rotation angle of the yOz rotating telescopic arm is fixed is obtained.

[0149] To sum up, the target position of the target ray source is first obtained, and the position of the xOy rotating lifting platform is adjusted so that the center point of the xOy rotating lifting platform coincides with the target position of the target ray source; the position of the yOz rotating telescopic arm is then adjusted so that the distance between the dose tester and the target position of the target ray source is the same as the target measurement distance; then the first target rotation angle of the xOy rotating lifting platform and the second target rotation angle of the yOz rotating telescopic arm are obtained, and the target spatial position of the measuring point is obtained according to the first target rotation angle and the second target rotation angle; finally, the xOy rotating lifting platform is adjusted according to the first target rotation angle, and the yOz rotating telescopic arm is adjusted according to the second target rotation angle, so that the X-ray dose value of the measuring point at the target spatial position is measured by the dose tester. The above scheme only requires one dose tester to complete all the testing work of the X-ray dose value, which is efficient and can effectively solve the shortcomings of poor traditional measurement positioning accuracy, complex system, and long measurement time, and can adapt to ray sources of different sizes to automatically complete spatial dose measurement.

[0150] See also Figure 7 , which is a structural block diagram of a computer device provided according to an exemplary embodiment of the present application, the computer device includes a memory and a processor, the memory is used to store a computer program, and when the computer program is executed by the processor, the above-mentioned X-ray source dose distribution test method is implemented.

[0151] The processor may be a central processing unit (CPU). The processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or a combination of the above chips.

[0152] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs, non-transitory computer executable programs, and modules, such as the program instructions / modules corresponding to the methods in the embodiments of this application. The processor executes the non-transitory software programs, instructions, and modules stored in the memory to perform various functional applications and data processing of the processor, thereby implementing the methods in the above-mentioned method embodiments.

[0153] The memory may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created by the processor, etc. In addition, the memory may include a high-speed random access memory, and may also include a non-transitory memory, such as at least one disk storage device, a flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory may optionally include a memory remotely located relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0154] In an exemplary embodiment, a computer-readable storage medium is further provided, storing at least one computer program, which is loaded and executed by a processor to implement all or part of the steps of the above method. For example, the computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a compact disc (CD-ROM), a magnetic tape, a floppy disk, or an optical data storage device.

[0155] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0156] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A method for testing X-ray source dose distribution, characterized in that: The method is performed by a computer device in an X-ray source dose distribution test system, which also includes a dose tester, an xOy rotary lifting platform, and a yOz rotary telescopic arm; the dose tester is fixed to the end of the upper arm of the yOz rotary telescopic arm; The method comprises: Obtaining the target point position of the target ray source; Adjusting the position of the xOy rotating lifting platform so that the center point of the xOy rotating lifting platform coincides with the target point position of the target ray source; Adjusting the position of the yOz rotating telescopic arm so that the distance between the dose meter and the target position of the target radiation source is the same as the target measurement distance; Obtaining a first target rotation angle of the xOy rotary lifting platform and a second target rotation angle of the yOz rotary telescopic arm; Acquiring a target spatial position of a measurement point according to the first target rotation angle and the second target rotation angle; the distance between the measurement point and the target position of the target ray source is the target measurement distance; The xOy rotary lifting platform is adjusted according to the first target rotation angle, and the yOz rotary telescopic arm is adjusted according to the second target rotation angle, so that the dose tester can measure the X-ray dose value of the measurement point at the target spatial position.

2. The method according to claim 1, characterized in that The first target rotation angle includes various first candidate rotation angles; the second target rotation angle includes various second candidate rotation angles; The obtaining of the first target rotation angle of the xOy rotary lifting platform and the second target rotation angle of the yOz rotary telescopic arm includes: Obtaining a first target rotation angle of the xOy rotary lifting platform and respective second candidate rotation angles of the yOz rotary telescopic arm corresponding to the first target rotation angle; A second target rotation angle of the yOz rotary telescopic arm and first candidate rotation angles of the xOy rotary lifting platform corresponding to the second target rotation angle are obtained.

3. The method according to claim 2, characterized in that The acquiring the target spatial position of the measurement point according to the first target rotation angle and the second target rotation angle includes: According to the first target rotation angle, the respective second candidate rotation angles, and the target measurement distance, the target spatial position of each measurement point when the rotation angle of the xOy rotary lifting platform is fixed is acquired.

4. The method according to claim 2 or 3, characterized in that The acquiring the target spatial position of the measurement point according to the first target rotation angle and the second target rotation angle includes: According to the second target rotation angle, the first candidate rotation angles, and the target measurement distance, the target spatial position of each measurement point when the rotation angle of the yOz rotating telescopic arm is fixed is obtained.

5. An X-ray source dose distribution test system, characterized in that: The system includes: computer equipment, a dose tester, an xOy rotary lifting platform, and a yOz rotary telescopic arm; The computer device is respectively connected to the dose tester, the xOy rotary lifting platform and the yOz rotary telescopic arm; The yOz rotating telescopic arm includes an upper arm and a lower arm with adjustable lengths, and the dose tester is fixed to the end of the upper arm; Wherein, the computer device is used to: Obtaining the target point position of the target ray source; Adjusting the position of the xOy rotating lifting platform so that the center point of the xOy rotating lifting platform coincides with the target point position of the target ray source; Adjusting the position of the yOz rotating telescopic arm so that the distance between the dose meter and the target position of the target radiation source is the same as the target measurement distance; Obtaining a first target rotation angle of the xOy rotary lifting platform and a second target rotation angle of the yOz rotary telescopic arm; Acquiring a target spatial position of a measurement point according to the first target rotation angle and the second target rotation angle; the distance between the measurement point and the target position of the target ray source is the target measurement distance; The xOy rotary lifting platform is adjusted according to the first target rotation angle, and the yOz rotary telescopic arm is adjusted according to the second target rotation angle, so that the dose tester can measure the X-ray dose value of the measurement point at the target spatial position.

6. The system according to claim 5, characterized in that A cross mark is provided at the center point of the xOy rotary lifting platform, and the cross mark is used to calibrate the target point position of the target ray source.

7. The system according to claim 6, characterized in that The xOy rotary lifting platform is further provided with an adjustable limit block, which is used to adjust according to the target position of the target ray source to ensure that the target position of the target ray source is at the center point of the cross mark.

8. An X-ray source dose distribution testing device, characterized in that: The device is applied to computer equipment in an X-ray source dose distribution test system, the system also comprising a dose tester, an xOy rotary lifting platform, and a yOz rotary telescopic arm; the dose tester is fixed to the end of the upper arm of the yOz rotary telescopic arm; The device comprises: A target position acquisition module is used to obtain the target position of the target ray source; a first adjustment module, configured to adjust the position of the xOy rotating lifting platform so that the center point of the xOy rotating lifting platform coincides with the target point position of the target ray source; A second adjustment module is used to adjust the position of the yOz rotating telescopic arm so that the distance between the dose tester and the target position of the target radiation source is the same as the target measurement distance; A rotation angle acquisition module, configured to acquire a first target rotation angle of the xOy rotary lifting platform and a second target rotation angle of the yOz rotary telescopic arm; a target spatial position acquisition module, configured to acquire a target spatial position of a measurement point according to the first target rotation angle and the second target rotation angle; the measurement point and the target position of the target ray source are separated by the target measurement distance; The dose value measurement module is used to adjust the xOy rotary lifting platform according to the first target rotation angle, and to adjust the yOz rotary telescopic arm according to the second target rotation angle, so as to measure the X-ray dose value of the measurement point at the target spatial position through the dose tester.

9. A computer device, characterized in that: The computer device includes a processor and a memory, wherein the memory stores at least one instruction, and the at least one instruction is loaded and executed by the processor to implement an X-ray source dose distribution testing method according to any one of claims 1 to 4.

10. A computer-readable storage medium, characterized in that The storage medium stores at least one instruction, and the at least one instruction is loaded and executed by the processor to implement the X-ray source dose distribution testing method according to any one of claims 1 to 4.

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