CN115774283A - X-ray source dose distribution testing method and system - Google Patents

Abstract

The application provides an X-ray source dose distribution testing method and a system, wherein the method comprises the steps of obtaining a target position of a target ray source, and adjusting a central point of an xOy rotating and lifting platform to be coincident with the target position of the target ray source; adjusting the position of the yOz rotating telescopic arm to enable the distance between the dosimeter and the target point position of the target ray source to be the same as the target measurement distance; then, a first target rotation angle of the xOy rotating lifting platform and a second target rotation angle of the yOz rotating telescopic arm are obtained, and a target space position of a measuring point is obtained according to each rotation angle; and finally, the xOy rotating and lifting platform and the yOz rotating and telescopic arm are adjusted according to the first target rotating angle and the second target rotating angle respectively, so that the X-ray dose value of the measuring point at the target space position is measured through the dose tester, all the test work of the X-ray dose value can be completed only through one dose tester, and the measuring efficiency is high.

Description

A method and system for testing X-ray source dose distribution

technical field

The present application relates to the technical field of X-ray imaging, in particular to a method and system for testing X-ray source dose distribution.

Background technique

X-rays are electromagnetic waves with extremely high frequency, extremely short wavelength, and high energy. In addition to being used in the medical field, X-rays are also commonly used in non-destructive testing in the industrial field, such as high-tech industries such as main electronic semiconductors and lithium battery new energy, as well as branches such as pan-industrial non-destructive testing, public safety, and foreign object detection.

The radiation produced by the X-ray source is usually expressed by the dose value, which is generally symmetrically distributed from the center point to the surrounding in space, and the projection surface at the same distance from the radiation source target point is circular or elliptical, and the dose value at the center of the circle is Maximum, the dose value from the center of the circle gradually decays to the minimum. Therefore, in applications in the field of X-ray imaging, since the overall distribution of X-ray dose values is not uniform, 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 each point in the direction of the radiation is detected by the multiple detection devices in real time. dose measurement.

However, in the above scheme, the method of placing multiple detection devices at equal intervals for real-time measurement takes a long time, and the test devices are complicated and not universal, which is inconvenient to use.

Contents of the invention

The present application provides a method and system for testing X-ray source dose distribution. Only one dose tester is needed to complete all the testing work, and the efficiency is high. The technical solution is as follows.

On the one hand, a kind of X-ray source dose distribution test method is provided, and described method is carried out by the computer equipment in the X-ray source dose distribution test system, and described system also comprises dose tester, xOy rotating lifting platform and yOz rotating telescopic arm ; The dose tester is fixed at the end of the upper arm of the yOz rotating telescopic arm;

The methods include:

Obtain 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 position of the target ray source;

Adjusting the position of the yOz rotating telescopic arm so that the distance between the dosimeter and the target position of the target radiation source is the same as the target measurement distance;

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

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

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 target spatial position can be adjusted by the dose tester Measure the X-ray dose value at the measuring point.

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

The computer equipment is respectively connected with the dose tester, the xOy rotating lifting platform and the yOz rotating telescopic arm;

The yOz rotating telescopic arm includes an adjustable length upper arm and a lower arm, and the dose tester is fixed at the end of the upper arm;

Wherein, the computer equipment is used for:

Obtain 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 position of the target ray source;

Adjusting the position of the yOz rotating telescopic arm so that the distance between the dosimeter and the target position of the target radiation source is the same as the target measurement distance;

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

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

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 target spatial position can be adjusted by the dose tester Measure the X-ray dose value at the measuring point.

In a possible implementation manner, a cross reticle is provided at a central point of the xOy rotating lifting platform, and the cross reticle is used for calibrating the position of the target point of the target radiation source.

In a possible implementation manner, the xOy rotary lifting platform is also provided with an adjustable limit stopper, and the adjustable limit stopper is used to adjust according to the position of the target point of the target radiation source, so as to Make sure that the target position of the target ray source is at the center point of the reticle.

In yet another aspect, an X-ray source dose distribution test device is provided, the device is applied to computer equipment in an X-ray source dose distribution test system, and the system also includes a dose tester, an xOy rotary lifting platform, and a yOz rotary telescopic arm; the dose tester is fixed at the end of the upper arm of the yOz rotating telescopic arm;

The devices include:

A target position acquisition module, configured to acquire the target position of the target ray source;

The first adjustment module is used 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;

The second adjustment module is used to adjust the position of the yOz rotating telescopic arm, so that the distance between the dosimeter 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 the first target rotation angle of the xOy rotary lifting platform and the second target rotation angle of the yOz rotary telescopic arm;

A target spatial position acquisition module, configured to acquire the target spatial position of the measurement point according to the first target rotation angle and the second target rotation angle; the distance between the measurement point and the target point position of the target ray source is the Target measurement distance;

A dose value measurement module, configured to adjust the xOy rotating lifting platform according to the first target rotation angle, and adjust the yOz rotating telescopic arm according to the second target rotation angle, so as to pass the dose test The instrument measures the X-ray dose value at the measurement point at the target spatial position.

In a possible implementation manner, the first target rotation angle includes each first candidate rotation angle; the second target rotation angle includes each second candidate rotation angle;

The rotation angle acquisition module is also used for:

Obtaining the first target rotation angle of the xOy rotary lifting platform and corresponding to the first target rotation angle, each second candidate rotation angle of the yOz rotary telescopic arm;

Obtaining the second target rotation angle of the yOz rotating telescopic arm, and each first candidate rotation angle of the xOy rotating lifting platform corresponding to the second target rotation angle.

In a possible implementation manner, the target spatial position acquisition module includes:

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

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

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

In yet another aspect, a computer device is provided, the computer device includes a processor and a memory, at least one instruction is stored in the memory, and the at least one instruction is loaded and executed by the processor to implement the above-mentioned A test method for X-ray source dose distribution.

In yet another aspect, a computer-readable storage medium is provided, at least one instruction is stored in the storage medium, and the at least one instruction is loaded and executed by a processor to implement the above-mentioned X-ray source dose distribution test method.

The technical solution provided by this application may include the following beneficial effects:

First obtain the target point position of the target ray source, and 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; then rotate the telescopic arm to the yOz Adjust the position of the dosimeter so that the distance between the dosimeter and the target position of the target ray source is the same as the target measurement distance; then obtain the first target rotation angle of the xOy rotating lifting platform and the yOz rotating telescopic arm The second target rotation angle, and according to the first target rotation angle and the second target rotation angle, obtain the target spatial position of the measurement point; finally adjust the xOy rotating lifting platform according to the first target rotation angle, and according to the The second target rotation angle adjusts the yOz rotating telescopic arm to measure the X-ray dose value at the measurement point at the target spatial position through the dose tester. The above scheme only needs one dose tester to complete the X-ray dose All the testing work of the value has high efficiency, which can effectively solve the shortcomings of traditional measurement positioning accuracy, complex system, and time-consuming measurement, and can adapt to radiation sources of different sizes to automatically complete space dose measurement.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the specific embodiments or prior art. Obviously, the accompanying drawings in the following description The drawings are some implementations of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic structural diagram of an X-ray source dose distribution testing system according to an exemplary embodiment.

Fig. 2 is a schematic structural diagram of a rotating platform table according to an exemplary embodiment.

Fig. 3 is a flow chart of a method for testing X-ray source dose distribution according to an exemplary embodiment.

Fig. 4 is a flow chart of a method for testing X-ray source dose distribution according to an exemplary embodiment.

Fig. 5 is a schematic diagram showing the spatial coordinates of any measurement point P on a spherical surface equidistant R from the center of the circle according to an exemplary embodiment.

Fig. 6 is a structural block diagram of an X-ray source dose distribution testing device according to an exemplary embodiment.

Fig. 7 shows a structural block diagram of a computer device shown in an exemplary embodiment of the present application.

Among them, 1-dose tester; 2-xOy rotating lifting platform; 3-xOy platform lifting device; 4-yOz rotating telescopic arm; 5-computer equipment; 21-cross reticle; 22-adjustable limit stop.

Detailed ways

The technical solutions of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

It should be understood that in the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, The relationship between configuration and configuration.

Fig. 1 is a schematic structural diagram of an X-ray source dose distribution testing system according to an exemplary embodiment. The system includes computer equipment 5 , dose tester 1 , xOy rotating elevating platform 2 and yOz rotating telescopic arm 4 .

The computer equipment is respectively connected with the dose tester 1, the xOy rotating lifting platform 2 and the yOz rotating telescopic arm 4;

The yOz rotating telescopic arm 4 includes an adjustable length upper arm and a lower arm, and the dose tester 1 is fixed at the end of the upper arm;

Wherein, the computer device 5 is used for:

Obtain the target point position of the target ray source;

Adjust 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 position of the target ray source;

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

Acquiring the first target rotation angle of the xOy rotating lifting platform 2 and the second target rotation angle of the yOz rotating telescopic arm 4;

According to the first target rotation angle and the second target rotation angle, the target spatial position of the measurement point is obtained; the target measurement distance between the measurement point and the target point position of the target ray source;

Adjust the xOy rotating lifting platform 2 according to the first target rotation angle, and adjust the yOz rotating telescopic arm 4 according to the second target rotation angle, so as to measure the target spatial position through the dose tester 1 Points for X-ray dose measurement.

Optionally, the dose tester 1 may be a photodiode detection board or an ionization chamber, which is used to measure X-ray dose values at measurement points at various target spatial positions.

Optionally, the system also includes an xOy platform lifting device 3, which is arranged below the xOy rotary lifting platform 2, and is used to control the lifting operation of the xOy rotary lifting platform 2.

Optionally, the xOy rotating lifting platform 2 can realize a 360° rotation of the xy plane of the rotating platform. Here, the rotation angle θ of the xOy rotating lifting platform 2 can be set using operating software, that is, the above-mentioned first target rotation angle.

Optionally, the lengths of the upper arm and the lower arm of the yOz rotating telescopic arm 4 can be adjusted, the upper arm and the lower arm are connected together at right angles, and a bracket is fixed at the angle between the upper arm and the lower arm, As shown in FIG. 1 , the structure of the yOz rotating telescopic arm 4 presents an "A" shape to ensure the stability and fixity of the yOz rotating telescopic arm 4 .

即上述第二目标旋转角度。Optionally, operating software can be used to set the rotation angle of the yOz rotating telescopic arm 4

That is, the above-mentioned second target rotation angle.

In a possible implementation, please refer to the structural schematic diagram of the rotating platform table as shown in Figure 2, as shown in Figure 2, the center point of the rotating platform table of the xOy rotating lifting platform 2 is provided with a cross mark 21 , the reticle 21 is used to calibrate the target position of the target radiation source.

In a possible implementation, as shown in FIG. 2 , the xOy rotary lifting platform 2 is also provided with an adjustable limit stopper 22, and the adjustable limit stopper 22 is used according to the target position of the target radiation source. The point position is adjusted to ensure that the target point position of the target ray source is at the center point of the reticle 21 .

Optionally, there are two adjustable limit stops 22 .

Optionally, the dose tester 1, the x0y rotating lifting platform 2, the x0y platform lifting device 3 and the yOz rotating telescopic arm 4 can be connected to the computer device 5 through a transmission network (such as a wireless communication network), and the computer device 5 The xOy rotating lifting platform 2, the xOy platform lifting device 3 and the yOz rotating telescopic arm 4 can be controlled respectively according to the preset first target rotation angle, the second target rotation angle and the target measurement distance, so that the xOy rotation The center point of the lifting platform 2 coincides with the target position of the target radiation source, the distance between the dosimeter 1 and the target position of the target radiation source is the same as the target measurement distance, and the dosimeter 1 is controlled to each The X-ray dose value is measured at the measurement point. In addition, the dosimeter 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.

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, and can also provide cloud services, cloud databases, cloud computing, cloud functions, cloud storage , network services, cloud communications, middleware services, domain name services, security services, CDN, and cloud servers for technical computing services such as big data and artificial intelligence platforms.

Optionally, the system may also include a management device, which is used to manage the system (such as managing the connection status between each device and the server, etc.), and the management device and the server are connected through a communication network. Optionally, the communication network is a wired network or a wireless network.

Optionally, the aforementioned wireless network or wired network uses standard communication technologies and/or protocols. The network is typically the Internet, but can be any other network including, but not limited to, any combination of local area networks, metropolitan area networks, wide area networks, mobile, wired or wireless networks, private networks, or virtual private networks. In some embodiments, data exchanged over a network is represented using techniques and/or formats including Hypertext Markup Language, Extensible Markup Language, and the like. In addition, all or some links may be encrypted using conventional encryption techniques such as Secure Sockets Layer, Transport Layer Security, Virtual Private Network, Internet Protocol Security, etc. In some other embodiments, customized and/or dedicated data communication technologies may also be used to replace or supplement the above data communication technologies.

Fig. 3 is a flow chart of a method for testing X-ray source dose distribution according to an exemplary embodiment. This method is carried out by the computer equipment 1 in the X-ray source dose distribution test system as shown in Figure 1, and this system also comprises dose tester, xOy rotating elevating platform and yOz rotating telescopic arm; This dose tester is fixed on this yOz rotating The end of the upper arm of the telescopic arm, as shown in Figure 3, the method may include the following steps:

S301. Obtain a target point position of a target ray source.

In a possible implementation, when measuring the dose value of the target radiation source, the target point position of the target radiation source is first determined according to the computer equipment, so that the xOy can be rotated up and down according to the target point position of the target radiation source Adjust the position of the platform. When the center point of the xOy rotary lifting platform coincides with the target point position of the target ray source, put the emission device of the target ray source on the center point of the xOy rotary lifting platform, and turn on the target ray source. , to perform a measurement operation.

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 of the target ray source.

In a possible implementation, after acquiring the target point position of the target ray source, it is necessary to first align the center point of the xOy rotating lifting platform with the target point position of the target ray source, that is, according to the target point position of the target ray source Target position, the position of the xOy rotating lifting platform is adjusted up and down 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 at the center of the xOy rotating lifting platform Point).

S303. Adjust the position of the yOz rotating telescopic arm so that the distance between the dosimeter and the target position of the target radiation source is the same as the target measurement distance.

In a possible implementation, after the center point of the xOy rotary lifting platform coincides 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 ellipse, and the dose value of the target position (center of the circle) of the target ray source is the largest, and the dose value from the center of the circle gradually decays to the minimum. The target measurement distance from the center of the circle is adjusted by the xOy rotating lifting platform to the target point height of the dose tester from the target radiation source, so that the target point height of the dose tester from the target radiation source is the same as the target measurement distance The same, so that the dose tester can realize the measurement of the dose value of each measurement point on the target measurement distance from the center of the circle.

Further, the target measurement distance may be preset.

S304. Obtain the first target rotation angle of the xOy rotating lifting platform and the second target rotation angle of the yOz rotating telescopic arm.

In a possible implementation, since the target point of the target ray source is at the same distance, its projection surface is circular or elliptical. , its projection surface is circular or elliptical, that is, what needs to be measured is the target point position of the target ray source as the center, and each measurement point on the surface of the sphere with the target measurement distance as the radius. When measuring the dose value of the target measurement point in any direction, determine the first target rotation angle of the xOy rotating lifting platform and the second target rotation angle of the yOz rotating telescopic arm, and obtain the position of the target measurement point in space , to adjust the angle of the xOy rotating lifting platform and the yOz rotating telescopic arm.

S305. According to the first target rotation angle and the second target rotation angle, acquire the target spatial position of the measurement point; the target measurement distance between the measurement point and the target point position of the target ray source.

In a possible implementation manner, since the spatial coordinates of the target measurement point are three-dimensional, the first target rotation angle is the rotation angle of the xOy rotating lifting platform on the xy plane, and the second target rotation angle is The rotation angle of the yOz rotating telescopic arm on the yz plane, therefore, the target spatial position of the target measurement point can be determined according to the rotation angle on the xy plane and the rotation angle on the yz plane.

S306. Adjust the xOy rotating lifting platform according to the first target rotation angle, and adjust the yOz rotating telescopic arm according to the second target rotation angle, so as to pass the dose tester to the measurement point at the target spatial position Carry out X-ray dose measurement.

In a possible implementation manner, after acquiring the target spatial position of the target measurement point, the xOy rotating lifting platform is rotated by a first target rotation angle, and the yOz rotating telescopic arm is rotated by a second target rotation angle, so that The dose tester on the upper arm of the yOz rotatable telescopic arm is adjusted to the same position as the target measurement point at the target spatial position, thereby realizing the measurement of the X-ray dose value of the target measurement point at the target spatial position by the dose tester.

Similarly, obtaining the target spatial position of each measurement point on the surface of a sphere with the target point position of the target ray source as the center and the target measurement distance as the radius can realize the measurement of the X-ray dose value of each measurement point , when it is necessary to measure the X-ray dose value of the measurement point at another distance from the target point position of the target ray source, it can be realized only by adjusting the target measurement distance.

To sum up, first obtain the target point position of the target ray source, and 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; The position of the yOz rotating telescopic arm is adjusted so that the distance between the dosimeter and the target position of the target radiation source is the same as the target measurement distance; then the first target rotation angle of the xOy rotating lifting platform and the yOz rotates the second target rotation angle of the telescopic arm, and according to the first target rotation angle and the second target rotation angle, obtains the target spatial position of the measuring point; finally performs the xOy rotation lifting platform according to the first target rotation angle Adjust, and adjust the yOz rotating telescopic arm according to the second target rotation angle, so as to measure the X-ray dose value at the measurement point at the target spatial position through the dose tester. The above scheme only needs a dose tester that is It can complete all the testing work of X-ray dose value, with high efficiency, and can effectively solve the shortcomings of traditional measurement positioning accuracy, complex system, and time-consuming measurement, and can adapt to different sizes of radiation sources to automatically complete space dose measurement.

Fig. 4 is a flow chart of a method for testing X-ray source dose distribution according to an exemplary embodiment. This method is carried out by the computer equipment 1 in the X-ray source dose distribution test system as shown in Figure 1, and this system also comprises dose tester, xOy rotating elevating platform and yOz rotating telescopic arm; This dose tester is fixed on this yOz rotating The end of the upper arm of the telescopic arm, as shown in Figure 4, the method may include the following steps:

S401. Obtain a target point position of a target ray source.

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 of the target ray source.

In a possible implementation, the lifting of the xOy rotary lifting platform is controlled by the xOy platform lifting device 3 in FIG. After the coincidence is achieved, the emission 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.

S403. Adjust the position of the yOz rotating telescopic arm so that the distance between the dosimeter and the target position of the target radiation source is the same as the target measurement distance.

In a possible implementation, since the dose tester is set at the end of the upper arm of the yOz rotating telescopic arm, if the measurement point is to be measured by the dose tester, it is necessary to measure the distance between the measurement point and the target point of the target radiation source. Adjust the position of the yOz rotating telescopic arm so that the dosimeter is adjusted to a position at a target measurement distance from the target position of the target ray source.

S404. Obtain the first target rotation angle of the xOy rotating lifting platform, and each second candidate rotation angle of the yOz rotating telescopic arm corresponding to the first target rotation angle.

S405. Obtain the second target rotation angle of the yOz rotating telescopic arm, and each first candidate rotation angle of the xOy rotating lifting platform corresponding to the second target rotation angle.

Further, from the above steps, the measured points on the surface of a sphere with the target point position of the target ray source as the center and the target measurement distance as the radius have been obtained. Since each measurement point is on the spatial coordinates, therefore, It is necessary to set the rotation angle of the xOy rotating lifting platform and the yOz rotating telescopic arm, so as to obtain the target space position or target space coordinate of the measured measurement point through the rotation angle of the xOy rotating lifting platform and the yOz rotating telescopic arm.

In a possible implementation manner, the first target rotation angle includes each first candidate rotation angle, and the second target rotation angle includes each second candidate rotation angle.

For example, if the rotation angle of the xOy rotary lifting platform is the first target rotation angle, if the rotation angle of the yOz rotary telescopic arm is the second target rotation angle, if the rotation angle of the xOy rotary lifting platform is fixed, that is, the first A target rotation angle remains unchanged, and each second candidate rotation angle is obtained, and the second candidate rotation angle is each changed second target rotation angle, so that according to the first target rotation angle, each second candidate rotation angle, and the The target measurement distance is to obtain the target spatial position of each measurement point when the rotation angle of the xOy rotary lifting platform is fixed.

In the case that 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 first target rotation angle of each change, according to The second target rotation angle, the respective first candidate rotation angles and the target measurement distance obtain the target spatial positions of each measurement point under the fixed rotation angle of the yOz rotating telescopic arm.

To sum up, by obtaining the target spatial position of each measurement point under the fixed rotation angle of the xOy rotating lifting platform, and obtaining the target spatial position of each measurement point under the fixed rotation angle of the yOz rotating telescopic arm, the following can be obtained The position of the target point of the target ray source is the center of the circle, and the target spatial position of each measurement point on the surface of the sphere with the target measurement distance as the radius.

S406. According to the first target rotation angle, each of the second candidate rotation angles and the target measurement distance, obtain the target spatial position of each measurement point when the rotation angle of the xOy rotary lifting platform is fixed; The target position of the target ray source is a distance away from the target measurement distance.

Further, the dose value at the measurement point is inversely proportional to the square of the distance from the measurement point to the target point position of the target ray source, so the measurement distance from the center of the circle (that is, the above-mentioned target point position) is equidistant R (that is, the above-mentioned target measurement distance The dose distribution of each measuring point on the spherical surface has representative significance. Please refer to the schematic diagram of the spatial coordinates at any measuring point P on the spherical surface at the equidistant R from the center of the circle shown in Figure 5. As shown in Figure 5, the target The target point position of the ray source is the center of the circle O, and any measurement point P(x, y, z) in space at a distance R from the target point position (that is, the above-mentioned target measurement distance) has x ² +y ² +z ² =R ² , the corresponding parameter equations of each measurement point P can be obtained as follows:

表示上述第二目标旋转角度，θ表示上述第一目标旋转角度；基于操作软件对R，

θ进行设置，开启射线源对射线源空间上任一测量点P对应的剂量值J进行测量，测量结束后根据各个测量点P的剂量值可得到空间上半径为R的圆球面上各点射线剂量值。Among them, R represents the above target measurement distance,

Represents the above-mentioned second target rotation angle, θ represents the above-mentioned first target rotation angle; based on the operating software for R,

θ is set, and the radiation source is turned on to measure the dose value J corresponding to any measurement point P in the radiation source space. After the measurement is completed, according to the dose value of each measurement point P, the radiation dose of each point on a spherical surface with a radius of R in space can be obtained value.

S407. According to the second target rotation angle, each of the first candidate rotation angles and the target measurement distance, acquire the target spatial position of each measurement point when the rotation angle of the yOz rotating telescopic arm is fixed.

Optionally, in another implementation manner, the first above-mentioned first candidate rotation angle may also be determined first, and the first above-mentioned first candidate rotation angle is combined with each second candidate rotation angle to obtain Under the condition that the first above-mentioned first candidate rotation angle is fixed and the second candidate rotation angle changes, the target spatial positions of the corresponding measurement points;

Next, acquire the second above-mentioned first candidate rotation angle, combine the second above-mentioned first candidate rotation angle with each of the second candidate rotation angles, obtain the fixed second above-mentioned first candidate rotation angle, Under the condition that the second candidate rotation angle changes, the corresponding target spatial positions of each measurement point;

By analogy, under the condition that each first candidate rotation angle is fixed and the second candidate rotation angle changes, the target spatial positions of the corresponding measurement points are obtained; The target spatial positions of all measurement points on the spherical surface with radius R.

(即第一个上述的第二候选旋转角度)，可测量得到J11剂量值，其对应空间位置P(x11，y11，z11)如下：For example, set the initial target ray source initial angle 1 value θ1 (that is, the first above-mentioned first candidate rotation angle), and control the yOz rotation telescopic arm angle 2 value

(that is, the first above-mentioned second candidate rotation angle), the dose value of J11 can be measured, and its corresponding spatial position P(x11, y11, z11) is as follows:

(即第二个上述的第二候选旋转角度)，可测量得到J12剂量值，其对应空间位置为P(x12，y12，z12)如下：Continue to keep the target ray source initial angle 1 value θ1 (that is, the first above-mentioned first candidate rotation angle), and control yOz to rotate the telescopic arm angle 2 value

(that is, the second above-mentioned second candidate rotation angle), the J12 dose value can be measured, and its corresponding spatial position is P(x12, y12, z12) as follows:

By analogy, the J1n dose value is measured, and its corresponding spatial position P(x1n, y1n, z1n) is as follows:

(即第一个上述的第二候选旋转角度)，可测量得到J11剂量值，对应空间位置P(x21，y21，z21)如下：Similarly, set the target ray source initial angle 1 value θ2 (that is, the second above-mentioned first candidate rotation angle), and control the yOz rotation telescopic arm angle 2 value

(that is, the first above-mentioned second candidate rotation angle), the dose value of J11 can be measured, and the corresponding spatial position P(x21, y21, z21) is as follows:

(即第二个上述的第二候选旋转角度)，测量得到J11剂量值，对应空间位置P(x22，y22，z22)如下：；Set the target ray source initial angle 1 value θ2 (that is, the second above-mentioned first candidate rotation angle), and control the yOz rotation telescopic arm angle 2 value

(that is, the second above-mentioned second candidate rotation angle), the J11 dose value is measured, and the corresponding spatial position P (x22, y22, z22) is as follows:;

By analogy, the J2n dose value is measured, and the corresponding spatial position P(x2n, y2n, z2n) is as follows:

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

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

S408. Adjust the xOy rotating elevating platform according to the first target rotation angle, and adjust the yOz rotating telescopic arm according to the second target rotation angle, so as to measure each target space position through the dose tester Points for X-ray dose measurement.

To sum up, first obtain the target point position of the target ray source, and 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; The position of the yOz rotating telescopic arm is adjusted so that the distance between the dosimeter and the target position of the target radiation source is the same as the target measurement distance; then the first target rotation angle of the xOy rotating lifting platform and the yOz rotates the second target rotation angle of the telescopic arm, and according to the first target rotation angle and the second target rotation angle, obtains the target spatial position of the measuring point; finally performs the xOy rotation lifting platform according to the first target rotation angle Adjust, and adjust the yOz rotating telescopic arm according to the second target rotation angle, so as to measure the X-ray dose value at the measurement point at the target spatial position through the dose tester. The above scheme only needs a dose tester that is It can complete all the testing work of X-ray dose value, with high efficiency, and can effectively solve the shortcomings of traditional measurement positioning accuracy, complex system, and time-consuming measurement, and can adapt to different sizes of radiation sources to automatically complete space dose measurement.

Fig. 6 is a structural block diagram of an X-ray source dose distribution testing device according to an exemplary embodiment. The device is applied to the computer equipment in the X-ray source dose distribution testing system, and the system also includes a dose tester, an xOy rotary lifting platform and a yOz rotary telescopic arm; the dose tester is fixed at the end of the upper arm of the yOz rotary telescopic arm;

The unit includes:

Target position acquisition module 601, configured to acquire the target position of the target ray source;

The 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 position of the target ray source;

The second adjustment module 603 is configured to adjust the position of the yOz rotating telescopic arm, so that the distance between the dosimeter and the target position of the target radiation source is the same as the target measurement distance;

A rotation angle obtaining module 604, configured to obtain a first target rotation angle of the xOy rotating lifting platform and a second target rotation angle of the yOz rotating telescopic arm;

A target spatial position acquisition module 605, configured to acquire the target spatial position of the measurement point according to the first target rotation angle and the second target rotation angle; the target measurement distance between the measurement point and the target point position of the target ray source;

The dose measurement module 606 is configured to adjust the xOy rotating lifting platform according to the first target rotation angle, and adjust the yOz rotating telescopic arm according to the second target rotation angle, so as to pass the dose tester to the target Measurement points at spatial positions are used to measure X-ray dose values.

In a possible implementation manner, the first target rotation angle includes each first candidate rotation angle; the second target rotation angle includes each second candidate rotation angle;

The rotation angle acquisition module 604 is also used for:

Obtaining the first target rotation angle of the xOy rotating lifting platform and corresponding to the first target rotation angle, each second candidate rotation angle of the yOz rotating telescopic arm;

The second target rotation angle of the yOz rotating telescopic arm and each first candidate rotation angle of the xOy rotating lifting platform corresponding to the second target rotation angle are acquired.

In a possible implementation manner, the target spatial position acquisition module 605 includes:

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

In a possible implementation manner, the target spatial position acquisition module 605 is also configured to:

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

To sum up, first obtain the target point position of the target ray source, and 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; The position of the yOz rotating telescopic arm is adjusted so that the distance between the dosimeter and the target position of the target radiation source is the same as the target measurement distance; then the first target rotation angle of the xOy rotating lifting platform and the yOz rotates the second target rotation angle of the telescopic arm, and according to the first target rotation angle and the second target rotation angle, obtains the target spatial position of the measuring point; finally performs the xOy rotation lifting platform according to the first target rotation angle Adjust, and adjust the yOz rotating telescopic arm according to the second target rotation angle, so as to measure the X-ray dose value at the measurement point at the target spatial position through the dose tester. The above scheme only needs a dose tester. It can complete all the testing work of X-ray dose value, with high efficiency, and can effectively solve the shortcomings of traditional measurement positioning accuracy, complex system, and time-consuming measurement, and can adapt to different sizes of radiation sources to automatically complete space dose measurement.

Please refer to FIG. 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 the computer program is programmed When the above-mentioned processor is executed, the above-mentioned X-ray source dose distribution testing method is realized.

Wherein, the processor may be a central processing unit (Central Processing Unit, CPU). The processor can also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits (Application Specific Integrated Circuit, ASIC), field-programmable gate array (Field-Programmable Gate Array, FPGA) or other Chips such as programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or combinations of the above-mentioned types of chips.

As a non-transitory computer-readable storage medium, the memory can be used to store non-transitory software programs, non-transitory computer-executable programs and modules, such as program instructions/modules corresponding to the methods in the embodiments of the present application. The processor executes various functional applications and data processing of the processor by running non-transitory software programs, instructions, and modules stored in the memory, that is, implements the methods in the above method implementation manners.

The memory may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created by the processor, and the like. In addition, the memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid-state storage devices. In some embodiments, the memory may optionally include memory located remotely from the processor, and such remote memory may be connected to the processor via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

In an exemplary embodiment, there is also provided a computer-readable storage medium for storing at least one computer program, and the at least one computer program is loaded and executed by a processor to implement all or part of the steps in the above method . For example, the computer-readable storage medium may be a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a read-only optical disc (Compact Disc Read-Only Memory, CD-ROM), Magnetic tapes, floppy disks, and optical data storage devices, etc.

Other embodiments of the present application will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the application, these modifications, uses or adaptations follow the general principles of the application and include common knowledge or conventional technical means in the technical field not disclosed in the application . The specification and examples are to be considered exemplary only, with a true scope and spirit of the application indicated by the following claims.

It should be understood that the present application is not limited to the precise constructions which have been described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (10)

1. A method for testing X-ray source dose distribution, characterized in that, the method is carried out by computer equipment in the X-ray source dose distribution testing system, and the system also includes a dose tester, xOy rotary lifting platform and yOz rotary telescopic arm; the dose tester is fixed at the end of the upper arm of the yOz rotating telescopic arm; The methods include: Obtain the target 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 position of the target ray source; Adjusting the position of the yOz rotating telescopic arm so that the distance between the dosimeter and the target position of the target radiation source is the same as the target measurement distance; Obtaining the first target rotation angle of the xOy rotary lifting platform and the second target rotation angle of the yOz rotary telescopic arm; Obtaining a target spatial position of a measurement point according to the first target rotation angle and the second target rotation angle; the target measurement distance between the measurement point and the target point position of the target ray source; 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 target spatial position can be adjusted by the dose tester Measure the X-ray dose value at the measuring point. 2. The method according to claim 1, wherein the first target rotation angle includes each first candidate rotation angle; the second target rotation angle includes each second candidate rotation angle; The acquisition 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 the first target rotation angle of the xOy rotary lifting platform and corresponding to the first target rotation angle, each second candidate rotation angle of the yOz rotary telescopic arm; Obtaining the second target rotation angle of the yOz rotating telescopic arm, and each first candidate rotation angle of the xOy rotating lifting platform corresponding to the second target rotation angle. 3. The method according to claim 2, wherein said obtaining the target spatial position of the measurement point according to the first target rotation angle and the second target rotation angle comprises: According to the first target rotation angle, each of the second candidate rotation angles and the target measurement distance, the target spatial position of each measurement point under the fixed rotation angle of the xOy rotary lifting platform is obtained. 4. The method according to claim 2 or 3, wherein the acquiring the target spatial position of the measurement point according to the first target rotation angle and the second target rotation angle comprises: According to the second target rotation angle, each of the first candidate rotation angles and the target measurement distance, the target spatial position of each measurement point under the fixed rotation angle of the yOz rotating telescopic arm is obtained. 5. An X-ray source dose distribution testing system, characterized in that the system comprises: computer equipment, a dose tester, x0y rotating lifting platform and yOz rotating telescopic arm; The computer equipment is respectively connected with the dose tester, the xOy rotating lifting platform and the yOz rotating telescopic arm; The yOz rotating telescopic arm includes an adjustable length upper arm and a lower arm, and the dose tester is fixed at the end of the upper arm; Wherein, the computer equipment is used for: Obtain the target 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 position of the target ray source; Adjusting the position of the yOz rotating telescopic arm so that the distance between the dosimeter and the target position of the target radiation source is the same as the target measurement distance; Obtaining the first target rotation angle of the xOy rotary lifting platform and the second target rotation angle of the yOz rotary telescopic arm; Obtaining a target spatial position of a measurement point according to the first target rotation angle and the second target rotation angle; the target measurement distance between the measurement point and the target point position of the target ray source; 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 target spatial position can be adjusted by the dose tester Measure the X-ray dose value at the measuring point. 6. The system according to claim 5, wherein a reticle is provided at the central point of the xOy rotary lifting platform, and the reticle is used for calibrating the position of the target point of the target ray source . 7. The system according to claim 5 or 6, wherein the xOy rotary lifting platform is also provided with an adjustable limit stopper, and the adjustable limit stopper is used for according to the target ray source The position of the target point is adjusted to ensure that the position of the target point of the target ray source is at the center point of the reticle. 8. An X-ray source dose distribution testing device, characterized in that the device is applied to the computer equipment in the X-ray source dose distribution testing system, and the system also includes a dose tester, xOy rotating lifting platform and yOz rotating telescopic arm; the dose tester is fixed at the end of the upper arm of the yOz rotating telescopic arm; The devices include: A target position acquisition module, configured to acquire the target position of the target ray source; The first adjustment module is used 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; The second adjustment module is used to adjust the position of the yOz rotating telescopic arm, so that the distance between the dosimeter 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 the first target rotation angle of the xOy rotary lifting platform and the second target rotation angle of the yOz rotary telescopic arm; A target spatial position acquisition module, configured to acquire the target spatial position of the measurement point according to the first target rotation angle and the second target rotation angle; the distance between the measurement point and the target point position of the target ray source is the Target measurement distance; A dose value measurement module, configured to adjust the xOy rotating lifting platform according to the first target rotation angle, and adjust the yOz rotating telescopic arm according to the second target rotation angle, so as to pass the dose test The instrument measures the X-ray dose value at the measurement point at the target spatial position. 9. A computer device, characterized in that the computer device comprises a processor and a memory, at least one instruction is stored in the memory, and the at least one instruction is loaded and executed by the processor to realize the invention as claimed in claim 1 A test method for X-ray source dose distribution described in any one of 4 to 4. 10. A computer-readable storage medium, characterized in that at least one instruction is stored in the storage medium, and the at least one instruction is loaded and executed by a processor so as to implement the one described in any one of claims 1 to 4. A test method for X-ray source dose distribution.

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