Radiographic imaging apparatus, imaging correction method, and storage medium

Abstract

The application discloses a kind of ray imaging equipment, imaging correction method and storage medium.The equipment includes ray source, for output imaging ray;Support device, is set in the imaging area corresponding to ray source, for supporting object to be detected;Correction device, is set in the side of support device, including for driving correction object to enter imaging area movement mechanism;Detector, for receiving the imaging ray passing through correction object, and generate projection data;Processor, for controlling movement mechanism drives correction object to enter imaging area;Control ray source and output imaging ray to imaging area;Control detector receives the imaging ray passing through correction object, and generate corresponding projection data;Based on projection data and the standard density corresponding to correction object to the imaging equipment corresponding density imaging correction.The technical scheme of the present application achieves the technical effect of improving imaging correction efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ray imaging equipment, and in particular to a ray imaging equipment, an imaging correction method and a storage medium. BACKGROUND

[0002] CT is to judge the information such as material density and atomic number by detecting the X-ray after the X-ray passing through the object to be detected, by using the different absorption degrees of different materials to X-ray.

[0003] With the increase of use time, the ray source is aging, and the ray intensity and spectrum emitted by the ray source will change slightly with the aging of the ray source. After the detector is irradiated by X-ray for a long time, the electronic components of the detector will also age, and the data acquisition performance will also change slightly with the increase of use time. Whether the ray source is aging or the detector is aging, it will cause the deviation of the calculation result of the X-ray absorption amount of the object to be detected, and further affect the CT image quality.

[0004] At present, the equipment maintenance personnel regularly corrects the imaging of the ray imaging equipment. During the imaging correction, the equipment maintenance personnel needs to manually place the phantom on the detection table, and then controls the CT system to image the phantom placed on the detection table to obtain a target image, and completes the imaging correction based on the target image. This imaging correction method at least has the problem of low correction efficiency. SUMMARY

[0005] The present application provides a ray imaging equipment, an imaging correction method and a storage medium to solve the problem of low correction efficiency of the existing imaging correction method.

[0006] According to an aspect of the present application, a ray imaging equipment is provided, comprising:

[0007] a ray source for outputting imaging rays;

[0008] a support device arranged in an imaging area corresponding to the ray source, for supporting an object to be detected;

[0009] a correction device arranged on one side of the support device, comprising a movement mechanism for driving the correction object into the imaging area, the difference between the standard density of the correction object and the material density of the object to be detected being within a set density range;

[0010] a detector for receiving imaging rays passing through the correction object and generating projection data;

[0011] The processor controls the motion mechanism to drive the correction object into an imaging area; controls a radiation source to output imaging radiation to the imaging area; controls a detector to receive the imaging radiation passing through the correction object and generate corresponding projection data; and performs imaging correction of the imaging device based on the projection data and a standard density corresponding to the correction object.

[0012] According to another aspect of the present application, there is provided an imaging correction method applied to the radiation imaging device of any of the preceding embodiments, comprising:

[0013] controlling the motion mechanism to drive the correction object into an imaging area;

[0014] controlling a radiation source to output imaging radiation to the imaging area;

[0015] controlling a detector to receive the imaging radiation passing through the correction object and generate corresponding projection data;

[0016] performing imaging correction of the imaging device based on the projection data and a standard density corresponding to the correction object.

[0017] According to another aspect of the present application, there is provided a computer readable storage medium storing computer instructions for causing a processor to implement the imaging correction method of any of the preceding embodiments when executed.

[0018] Compared with the prior art, the technical solution of the radiation imaging device provided by the embodiments of the present application sets the correction device on one side of the support device, drives the correction object into the imaging area by the motion mechanism of the correction device, controls the radiation source to output imaging radiation to the imaging area, controls the detector to receive the imaging radiation passing through the correction object and generate corresponding projection data, and performs imaging correction of the imaging device based on the projection data and a standard pixel value corresponding to the correction object. The setting of the correction device realizes the automation of the imaging correction of the imaging device and simplifies the imaging correction process.

[0019] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present application, nor to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0021] Figure 1 This is a front view of a X-ray imaging device provided according to an embodiment of the present invention;

[0022] Figure 2 This is a longitudinal cross-sectional view of the X-ray imaging device provided according to an embodiment of the present invention;

[0023] Figure 3 This is a top cross-sectional view of the X-ray imaging device along the KK direction provided in an embodiment of the present invention;

[0024] Figure 4 This is a top-view cross-sectional view along the KK direction of another X-ray imaging device provided according to an embodiment of the present invention;

[0025] Figure 5 This is a front view of a X-ray imaging device capable of real-time imaging correction detection according to an embodiment of the present invention;

[0026] Figure 6 This is a flowchart of an imaging correction method provided according to an embodiment of the present invention. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] Figure 1 This is a schematic diagram of the structure of a X-ray imaging device provided in an embodiment of the present invention. Figure 1 , Figure 2 and Figure 3As shown, the device includes a radiation source 11, a support device 12, a correction device, a detector 14, and a processor 15. The radiation source 11 is used to output imaging radiation. The support device 12 is disposed in the imaging area corresponding to the radiation source and is used to support the object to be detected. The correction device is disposed on one side of the support device and includes a motion mechanism 131 for driving the correction object 31 into the imaging area. The difference between the standard density of the correction object 31 and the material density of the object to be detected is within a set density range. The detector 14 is used to receive the imaging radiation passing through the correction object and generate projection data. The processor 15 is used to control the motion mechanism 131 to drive the correction object 31 into the imaging area 16; control the radiation source 11 to output imaging radiation to the imaging area 16; control the detector 14 to receive the imaging radiation passing through the correction object 31 and generate corresponding projection data; and perform corresponding density imaging correction on the imaging device based on the projection data and the standard density corresponding to the correction object.

[0030] Processor 15 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processors include, but are not limited to, central processing unit (CPU), graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc.

[0031] Among them, imaging rays are X-rays, gamma rays, and other rays used for non-destructive imaging and detection.

[0032] The X-ray source 11 and the detector 14 are positioned facing each other. Of all the imaging rays output by the X-ray source, those that pass through the imaging area can be detected by the detector, and corresponding projection data can be generated.

[0033] The object to be detected is the object that needs to be imaged and detected, which can be an industrial product, raw material, or a living animal.

[0034] The support device 12 can be configured as either fixed or movable. In one embodiment, the movable support device includes a conveyor mechanism, such as a conveyor belt. This conveyor mechanism can move the object to be detected from its initial position to the imaging area, or from the imaging area back to its initial position. The X-ray source outputs imaging rays during the movement of the object to be detected, and the detector receives the imaging rays passing through the moving object to be detected and generates corresponding projection data.

[0035] In one embodiment, the support device 12 includes a conveyor belt, such as Figure 2 and Figure 3As shown, the conveyor belt includes an upper section and a lower section, with a correction device disposed between the upper and lower sections. A control mechanism controls at least one motion mechanism to move the corresponding correction object 31 to below the support device.

[0036] The correction device can be set on one side of the support device, such as above, below, left or right of the support device, or even upper left, lower left, upper right or lower right.

[0037] The correction device itself can be disposed in the imaging area 16 or in a non-imaging area. In one embodiment, the correction device is disposed in a non-imaging area and includes a control mechanism and a motion mechanism. One end of the motion mechanism 131 is connected to the control mechanism, and the other end is loaded with the correction object 31. The control mechanism can control the motion mechanism 131 to move the correction object 31 from the non-imaging area into the imaging area 16, or from the imaging area 16 back to the non-imaging area.

[0038] The correction object is a phantom of known density, and the difference between its density and the density of the material to be tested is within a set error range. Theoretically, the shape of the correction object can be set to any shape. In one embodiment, the correction object is set to a shape such as a sphere, cylinder, or cube.

[0039] The motion mechanism is detachably connected to the object being corrected. This design allows the correction device to be adapted to different detection scenarios, making it suitable for X-ray imaging equipment used for imaging detection of different types of objects.

[0040] In one embodiment, the motion mechanism is configured as an electric actuator.

[0041] In one embodiment, the X-ray imaging apparatus further includes a frame 18, on which the X-ray source 11 and the detector 14 are fixed. Figure 1 As shown, the imaging area 16 includes an imaging channel 17, and the object to be detected is placed within the imaging channel.

[0042] In one embodiment, imaging correction is not performed simultaneously with imaging of the object to be detected. Image reconstruction is performed on the projection data to obtain a target image; it is determined whether the difference between the material density of the image region corresponding to the corrected object in the target image and the standard density is within a set error range; if not, imaging correction is performed on the imaging device based on the material density and the standard density to obtain correction parameters; an imaging source is controlled to output imaging rays to the imaging region; based on the correction parameters, a detector is controlled to receive the imaging rays passing through the corrected object and generate corresponding projection data; the process returns to the step of image reconstruction of the projection data to obtain the target image, until it is determined whether the difference between the material density and the standard density is within a set error range; if yes, a prompt message indicating successful imaging correction is output; if no, a prompt message indicating a device malfunction is output.

[0043] For example, in response to an imaging correction request, the processor controls a motion mechanism to move the correction object into the imaging area, controls a radiation source to output imaging rays into the imaging area, controls a detector to detect the imaging rays passing through the correction object, and generates corresponding first projection data. Image reconstruction is performed on the first projection data to obtain a first reconstructed image. It is determined whether the material density corresponding to the pixel values ​​in the first reconstructed image is within a set error range compared to the pre-selected, stored standard density of the correction object. If so, imaging correction of the radiation imaging device is unnecessary; otherwise, imaging correction is performed on the imaging device based on the material density and the standard density to obtain correction parameters. The radiation source is controlled to be in output mode, and based on the correction parameters, the detector is controlled to re-detect the imaging rays passing through the correction object to generate second projection data. It is understood that if the imaging correction of the radiation imaging device is successful, the material density corresponding to the pixel values ​​of the image region corresponding to the correction object in the second reconstructed image is the same as the standard density of the correction object, wherein the second reconstructed image is reconstructed based on the second projection data; if the imaging correction fails, it is determined that the radiation imaging device is faulty, and therefore a prompt message indicating an abnormality in the radiation imaging device is output.

[0044] In one embodiment, the processor automatically generates an imaging correction request when it detects that the time interval between the current moment and the last imaging correction moment has reached a set correction duration.

[0045] In one embodiment, the processor automatically generates an imaging correction request upon detecting an imaging correction option manually triggered by the user.

[0046] In one embodiment, the processor automatically generates an imaging correction request upon detecting a power-on signal.

[0047] Compared to existing technologies, the technical solution of the X-ray imaging device provided in this invention includes a correction device on one side of the support device. The correction device's motion mechanism drives the correction object into the imaging area; the X-ray source is controlled to output imaging rays into the imaging area; the detector is controlled to receive the imaging rays passing through the correction object and generate corresponding projection data; and imaging correction of the corresponding density is performed on the imaging device based on the projection data and the standard pixel values ​​corresponding to the correction object. The correction device automates the imaging correction process and simplifies the imaging correction procedure.

[0048] Figure 3 This is a top cross-sectional view along the KK direction of the X-ray imaging device provided in this embodiment of the invention. This embodiment further refines the correction device described in the previous embodiments. The correction device of this X-ray imaging device includes a control mechanism ( Figure 3 (Not shown) and at least two motion mechanisms 131 connected to the control mechanism, each motion mechanism 131 having a correction object 31 at its end, and the projections of the correction object 31 corresponding to any motion mechanism and the correction objects 31 corresponding to other motion mechanisms on the upper surface of the support device do not overlap; the control mechanism is configured to control at least one of the at least two motion mechanisms 131 to drive the corresponding correction object 31 into the imaging area; the processor is configured to, in response to an imaging correction request, determine at least one target correction object identifier, and, according to a pre-created correspondence between correction object identifiers and motion mechanism identifiers, determine the motion mechanism identifiers corresponding to at least one target correction object identifier; and control the motion mechanism corresponding to each of the motion mechanism identifiers to drive the corresponding correction object into the imaging area through the control mechanism.

[0049] The motion mechanism 131 is detachably connected to the correction object 31. This allows for the loading of various correction objects onto different motion mechanisms as needed. Then, the configuration file is used to configure the correction object identifiers corresponding to the motion mechanism identifiers, establishing a mapping between the motion mechanism identifiers and the correction object identifiers.

[0050] The control mechanism can control any one of the at least two motion mechanisms to enter or exit the imaging region. For example, such as... Figure 4 As shown, the control mechanism controls four motion mechanisms to move their corresponding correction objects above the detector. Combined with... Figure 1 As can be seen, the correction object is located below the X-ray source, specifically below the support device below the X-ray source. This design allows the control mechanism to control one or more of the at least two motion mechanisms at a time to move the correction object into or out of the imaging area.

[0051] It is understandable that if the projections of the corrected object corresponding to any motion mechanism onto the upper surface of the support device do not overlap with those of the corrected objects corresponding to other motion mechanisms, then in the target image obtained by image reconstruction of the corresponding projection data, there will be no overlapping parts between the images of each corrected object. In this case, the corrected object identifier corresponding to each corrected object image in the target image can be directly determined based on the pre-determined spatial positional relationship between each corrected object.

[0052] It is understandable that different motion mechanisms can be equipped with different correction objects. For example... Figure 3 As shown, four motion mechanisms are equipped with different correction objects. In one embodiment, the different motion mechanisms can be configured to have different extension ranges, that is, to move the correction objects over different distances.

[0053] When a user triggers a correction option in the visual interface, the processor generates a corresponding imaging correction request upon detecting the triggering of this option. This request is parsed to determine the corresponding correction object identifier, i.e., the target correction object identifier. Based on a pre-established correspondence between correction object identifiers and motion mechanism identifiers, the motion mechanism identifier corresponding to the target correction object identifier is determined. The control mechanism controls the motion mechanism corresponding to the motion mechanism identifier to move the corresponding correction object into the imaging area. It can be understood that the correction object corresponding to this motion mechanism identifier is the same as the correction object corresponding to the target correction object identifier. This embodiment achieves accurate control of the motion mechanism and accurate selection of the correction object by pre-establishing a correspondence between correction object identifiers and motion mechanism identifiers.

[0054] In one embodiment, a user triggers a first correction option in a visual interface, which corresponds to correction object A and correction object B. Upon detecting the triggering of the first correction option, the processor generates a corresponding imaging correction request. This imaging correction request is parsed to determine the first correction object identifier corresponding to correction object A and the second correction object identifier corresponding to correction object B. Based on a pre-created correspondence between correction object identifiers and motion mechanism identifiers, the motion mechanism identifiers corresponding to the first and second correction object identifiers are determined; the motion mechanism identifier corresponding to the first correction object identifier is used as the first motion mechanism identifier, and the motion mechanism identifier corresponding to the second correction object identifier is used as the second motion mechanism identifier. A control mechanism controls the motion mechanisms corresponding to the first and second motion mechanism identifiers to respectively drive correction object A and correction object B into the imaging area. This embodiment enables simultaneous imaging correction of two densities for the imaging device.

[0055] It is understandable that when the imaging device simultaneously performs imaging correction for two densities, the target image corresponding to the projected data includes images of two corrected objects. Taking corrected object A and corrected object B as an example, the first material density corresponding to the pixel values ​​of the image region corresponding to corrected object A in the target image, and the second material density corresponding to the pixel values ​​of the image region corresponding to corrected object B in the target image, are determined. The square of the difference between the first material density and the standard density of corrected object A, and the square of the difference between the second material density and the standard density of corrected object B are determined; the reconstruction function is optimized based on the principle of minimizing the sum of squares to obtain the correction parameters of the imaging device for the corresponding densities. The reconstruction function can be obtained using existing formulas.

[0056] In one embodiment, a user inputs at least one density range or at least one substance identifier in a visual interface, and then sends an imaging correction command to the processor by triggering the corresponding correction option. Upon detecting the imaging correction command, the processor determines at least one target object identifier based on the at least one density range or substance identifier; and generates a corresponding imaging correction request based on the at least one target object identifier. This embodiment achieves the technical effect of automatically generating a corresponding imaging correction request based on a density range or substance identifier.

[0057] The embodiments of the present invention realize imaging correction of objects of at least one density on the imaging device, which simplifies the imaging correction process and improves the efficiency of imaging correction.

[0058] Figure 5 This is another X-ray imaging device provided by an embodiment of the present invention. This embodiment further refines the correction device in the previous embodiments and is adapted to a non-rotating X-ray imaging device. The projections of the correction object 31 and the object to be detected 21 on the upper surface of the support device 12 do not coincide. The processor is used to: receive imaging rays passing through the object to be detected 21 and the correction object 31 through the detector 14, and generate corresponding projection data; perform image reconstruction on the projection data to obtain a target image; determine whether the pixel values ​​of the image region corresponding to the correction object in the target image meet the imaging correction conditions; if yes, then perform imaging correction on the X-ray imaging device according to the material density corresponding to the pixel values ​​of the image region corresponding to the correction object in the target image and the standard density corresponding to the correction object; if no, then there is no need to start the imaging correction process.

[0059] In this context, non-rotating X-ray imaging equipment refers to equipment where the spatial relationship between the X-ray source and the supporting device remains unchanged during the process of the X-ray source outputting imaging rays. Similarly, the spatial relationship between the detector and the supporting device also remains unchanged.

[0060] In one embodiment, when the object to be inspected is placed on the support device, at least one motion mechanism is controlled by a control mechanism to move the corresponding correction object to below the support device. An imaging beam is output from a control X-ray source. An imaging beam passing through the object to be inspected and the imaging beam passing through the correction object are received by a detector.

[0061] In one embodiment, the support device 12 includes a conveyor belt, such as Figure 5 and Figure 3 As shown, the conveyor belt includes an upper section and a lower section, with a correction device positioned between them. A control mechanism controls at least one motion mechanism to move the corresponding correction object 31 to below the support device. The object to be inspected is then placed on the conveyor belt, which moves it towards the imaging area. When the object is detected to have reached the imaging area, the X-ray source is controlled to output imaging rays. A detector receives the imaging rays passing through the object and the correction object to generate corresponding projection data.

[0062] After the target image is determined, it is checked whether the pixel values ​​of the image region corresponding to the object to be corrected in the target image are within the set pixel value range. If so, the X-ray imaging device is determined not to meet the imaging correction conditions; otherwise, it is determined to meet the imaging correction conditions. If the imaging correction conditions are met, the X-ray imaging device is subjected to imaging correction based on the material density corresponding to the pixel values ​​of the image region corresponding to the object to be corrected in the target image and the standard density of the object to be corrected. Specifically, the difference between the material density corresponding to the pixel values ​​within the set pixel value range and the standard density of the object to be corrected must be within the set error range.

[0063] This invention achieves the technical effect of real-time detection of imaging correction and timely imaging correction of the imaging device by detecting in real time whether the pixel values ​​of the image region corresponding to the object to be corrected in the target image meet the imaging correction conditions, and when the imaging correction conditions are met, performing imaging correction of the corresponding density on the imaging device.

[0064] Figure 6 This is a flowchart illustrating an imaging correction control method for a X-ray imaging device provided in an embodiment of the present invention. This embodiment is applicable to situations where automatic imaging correction of corresponding densities is performed by the imaging device. This embodiment belongs to the same inventive concept as the aforementioned embodiments. Figure 6 As shown, the method includes:

[0065] S110. Control the motion mechanism to drive the correction object into the imaging area.

[0066] The motion mechanism is the motion device of the correction device in the aforementioned embodiments, such as an electric actuator, used to move the object to be detected from its initial position to the imaging area, or from the imaging area back to its initial position. The X-ray source outputs imaging rays during the movement of the object to be detected, and the detector receives the imaging rays passing through the moving object to be detected and generates corresponding projection data.

[0067] In one embodiment, the support device 12 includes a conveyor belt, such as Figure 5 and Figure 3 As shown, the conveyor belt includes an upper section and a lower section, with a correction device disposed between the upper and lower sections. A control mechanism controls at least one motion mechanism to move the corresponding correction object 31 to below the support device.

[0068] The correction object is a phantom of known density, and the difference between its density and the density of the material to be tested is within a set error range. Theoretically, the shape of the correction object can be set to any shape. In one embodiment, the correction object is set to a shape such as a sphere, cylinder, or cube.

[0069] The motion mechanism is detachably connected to the object being corrected. This design allows the correction device to be adapted to different detection scenarios and X-ray imaging equipment for different objects.

[0070] S120, Control the X-ray source to output imaging rays to the imaging area.

[0071] Among them, imaging rays are X-rays, gamma rays, and other rays used for non-destructive imaging and detection.

[0072] Regarding the imaging region, among all the imaging rays output by the X-ray source, those that pass through the imaging region can be detected by the detector, and corresponding projection data can be generated.

[0073] S130, Control the detector to receive the imaging rays passing through the corrected object and generate corresponding projection data.

[0074] In this setup, the X-ray source and detector are positioned facing each other. Of all the imaging rays output by the X-ray source, those that pass through the imaging area can be detected by the detector, generating corresponding projection data.

[0075] S140. Based on the projection data and the standard density corresponding to the object to be corrected, the imaging device performs imaging correction for the corresponding density.

[0076] In one embodiment, image reconstruction is performed on the projection data to obtain a target image; it is determined whether the difference between the material density and the standard density of the image region corresponding to the corrected object in the target image is within a set error range; if not, imaging correction is performed on the imaging device based on the material density and the standard density to obtain correction parameters; an imaging source is controlled to output imaging rays to the imaging region; based on the correction parameters, a detector is controlled to receive the imaging rays passing through the corrected object and generate corresponding projection data; the process returns to the step of image reconstruction of the projection data to obtain the target image until it is determined whether the difference between the material density and the standard density is within a set error range; if so, a prompt message indicating successful imaging correction is output; if not, a prompt message indicating device malfunction is output.

[0077] For example, in response to an imaging correction request, the processor controls a motion mechanism to move the correction object into the imaging area, controls a radiation source to output imaging rays into the imaging area, controls a detector to detect the imaging rays passing through the correction object, and generates corresponding first projection data. Image reconstruction is performed on the first projection data to obtain a first reconstructed image. It is determined whether the material density corresponding to the pixel values ​​in the first reconstructed image is within a set error range compared to the pre-selected, stored standard density of the correction object. If so, imaging correction of the radiation imaging device is unnecessary; otherwise, imaging correction is performed on the imaging device based on the material density and the standard density to obtain correction parameters. The radiation source is controlled to be in an output state. Based on the correction parameters, the detector is controlled to re-detect the imaging rays passing through the correction object to generate second projection data. It is understood that if the imaging correction of the radiation imaging device is successful, the material density corresponding to the pixel values ​​of the image region corresponding to the correction object in the second reconstructed image is the same as the standard density of the correction object, wherein the second reconstructed image is reconstructed based on the second projection data. If the imaging correction fails, it is determined that the radiation imaging device is faulty, and therefore a prompt message indicating an abnormality in the radiation imaging device is output.

[0078] For example, in response to an imaging correction request, the processor controls a motion mechanism to move the correction object into the imaging area, controls a radiation source to output imaging rays into the imaging area, controls a detector to detect the imaging rays passing through the correction object, and generates corresponding first projection data. Image reconstruction is performed on the first projection data to obtain a first reconstructed image. It is determined whether the material density corresponding to the pixel values ​​in the first reconstructed image is within a set error range compared to the pre-selected, stored standard density of the correction object. If so, imaging correction of the radiation imaging device is unnecessary; otherwise, imaging correction is performed on the imaging device based on the material density and the standard density to obtain correction parameters. The radiation source is controlled to be in an output state. Based on the correction parameters, the detector is controlled to re-detect the imaging rays passing through the correction object to generate second projection data. It is understood that if the imaging correction of the radiation imaging device is successful, the material density corresponding to the pixel values ​​of the image region corresponding to the correction object in the second reconstructed image is the same as the standard density of the correction object, wherein the second reconstructed image is reconstructed based on the second projection data. If the imaging correction fails, it is determined that the radiation imaging device is faulty, and therefore a prompt message indicating an abnormality in the radiation imaging device is output.

[0079] In one embodiment, the processor automatically generates an imaging correction request when it detects that the time interval between the current moment and the last imaging correction moment has reached a set correction duration.

[0080] In one embodiment, the processor automatically generates an imaging correction request upon detecting an imaging correction option manually triggered by the user.

[0081] In one embodiment, the processor automatically generates an imaging correction request upon detecting a power-on signal.

[0082] Compared to existing technologies, the technical solution of the X-ray imaging device control method provided in this invention involves using a motion mechanism to drive a correction object into the imaging area; controlling the X-ray source to output imaging rays into the imaging area; controlling the detector to receive the imaging rays passing through the correction object and generating corresponding projection data; and performing corresponding density imaging correction on the imaging device based on the projection data and the standard pixel value corresponding to the correction object. By using a motion mechanism to drive the correction object into the imaging area, the imaging correction of the imaging device is automated, simplifying the imaging correction process.

[0083] In one embodiment, the correction device is disposed below the support device.

[0084] In one embodiment, the correction device includes a control mechanism and at least two motion mechanisms connected to the control mechanism. Each motion mechanism has a correction object at its end, and the projections of the correction object corresponding to any motion mechanism onto the upper surface of the support device do not overlap with the projections of the correction objects corresponding to other motion mechanisms.

[0085] The control mechanism is configured to control at least one of the at least two motion mechanisms to drive the corresponding correction object into the imaging area.

[0086] The processor is configured to, in response to an imaging correction request, determine at least one target correction object identifier, and, based on a pre-created correspondence between correction object identifiers and motion mechanism identifiers, determine motion mechanism identifiers corresponding to at least one target correction object identifier; and, through a control mechanism, control the motion mechanism corresponding to each of the motion mechanism identifiers to drive the corresponding correction object into the imaging area.

[0087] In one embodiment, determining the target object identifier in response to an imaging correction request includes:

[0088] In response to an imaging correction command and at least one density range or at least one material identifier corresponding to the imaging correction command, at least one target correction object identifier corresponding to the at least one density range or at least one material identifier is determined;

[0089] A corresponding imaging correction request is generated based on the at least one target correction object identifier.

[0090] In one embodiment, the motion mechanism is configured to be detachably connected to the correction object.

[0091] In one embodiment, the imaging device performs corresponding density imaging correction based on the projection data and the standard density corresponding to the corrected object, wherein the standard information is standard pixel information or standard density information, including:

[0092] The projection data is used to reconstruct the target image.

[0093] Determine whether the difference between the material density of the image region corresponding to the corrected object in the target image and the standard density is within a set error range;

[0094] If not, then the imaging device is subjected to corresponding density imaging correction based on the material density and the standard density to obtain correction parameters;

[0095] The X-ray source is controlled to output imaging rays to the imaging area; based on the correction parameters, the detector is controlled to receive the imaging rays passing through the corrected object and generate corresponding projection data.

[0096] The process returns to the step of reconstructing the image from the projected data to obtain the target image, until it is determined whether the difference between the material density and the standard density is within a set error range.

[0097] If so, output a message indicating successful image correction;

[0098] If not, output a message indicating a device malfunction.

[0099] In one embodiment, the projections of the corrected object and the object to be detected on the upper surface of the support device do not coincide. The control detector receives imaging rays passing through the corrected object and generates corresponding projection data, including:

[0100] The detector receives imaging rays passing through the object to be detected and imaging rays passing through the corrected object, and generates corresponding projection data.

[0101] The step of performing corresponding density imaging correction on the imaging device based on the projection data and the standard density corresponding to the corrected object includes:

[0102] The projection data is used to reconstruct the target image.

[0103] Determine whether the pixel values ​​of the image region in the target image corresponding to the object to be corrected meet the imaging correction conditions;

[0104] If so, the X-ray imaging device performs imaging correction for the object of that density based on the material density corresponding to the pixel value of the image region corresponding to the corrected object in the target image and the standard density corresponding to the corrected object.

[0105] In one embodiment, the processor is further configured to:

[0106] Upon detecting a prompt indicating successful image correction, the motion mechanism is controlled to move the correction object out of the imaging area.

[0107] It should be noted that for any aspects of the imaging correction control method for X-ray imaging equipment that are not described in detail, please refer to the foregoing embodiments.

[0108] In some embodiments, the imaging correction method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as a storage unit. In some embodiments, part or all of the computer program may be loaded and / or installed into the X-ray imaging device via a ROM and / or communication unit. When the computer program is loaded into RAM 13 and executed by the processor, one or more steps of the imaging correction method described above may be performed. Alternatively, in other embodiments, the processor may be configured to perform the imaging correction method by any other suitable means (e.g., by means of firmware).

[0109] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0110] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0111] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0112] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0113] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0114] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0115] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A X-ray imaging device, characterized in that, include: A radiation source used to output imaging radiation; A support device is disposed in the imaging area corresponding to the X-ray source to support the object to be detected; A correction device is disposed on one side of the support device, including a control mechanism and at least two motion mechanisms connected to the control mechanism. The control mechanism is configured to control at least one of the at least two motion mechanisms to drive a corresponding correction object into the imaging area. Each motion mechanism has a correction object at its end, and the projections of the correction object corresponding to any motion mechanism onto the upper surface of the support device do not overlap with the projections of the correction objects corresponding to other motion mechanisms. The difference between the standard density of the correction object and the material density of the object to be detected is within a set density range. A detector is used to receive imaging rays passing through the corrected object and generate projection data; The processor is configured to, in response to an imaging correction request, determine at least one target correction object identifier, and, based on a pre-created correspondence between correction object identifiers and motion mechanism identifiers, determine motion mechanism identifiers corresponding to each of the at least one target correction object identifiers; control the motion mechanism corresponding to each of the motion mechanism identifiers to drive the corresponding correction object into the imaging area via a control mechanism; control the X-ray source to output imaging rays into the imaging area; control the detector to receive the imaging rays passing through the correction object and generate corresponding projection data; and perform corresponding density imaging correction on the imaging device based on the projection data and the standard density corresponding to the correction object.

2. The device according to claim 1, characterized in that, The correction device is located below the support device.

3. The device according to claim 1, characterized in that, The step of determining the target object identifier in response to an imaging correction request includes: In response to an imaging correction command and at least one density range or at least one material identifier corresponding to the imaging correction command, at least one target correction object identifier corresponding to the at least one density range or at least one material identifier is determined; A corresponding imaging correction request is generated based on the at least one target correction object identifier.

4. The device according to claim 1, characterized in that, The motion mechanism is configured to be detachably connected to the correction object.

5. The device according to claim 1, characterized in that, The step of performing corresponding density imaging correction on the imaging device based on the projection data and the standard density corresponding to the corrected object includes: The projection data is used to reconstruct the target image. Determine whether the difference between the material density of the image region corresponding to the corrected object in the target image and the standard density is within a set error range; If not, then the imaging device is subjected to corresponding density imaging correction based on the material density and the standard density to obtain correction parameters; The X-ray source is controlled to output imaging rays to the imaging area; based on the correction parameters, the detector is controlled to receive the imaging rays passing through the corrected object and generate corresponding projection data. The process returns to the step of reconstructing the image from the projected data to obtain the target image, until it is determined whether the difference between the material density and the standard density is within a set error range. If so, output a message indicating successful image correction; If not, output a message indicating a device malfunction.

6. The device according to claim 1, characterized in that, The projections of the corrected object and the object to be detected on the upper surface of the support device do not coincide. The control detector receives the imaging rays passing through the corrected object and generates corresponding projection data, including: The detector receives imaging rays passing through the object to be detected and imaging rays passing through the corrected object, and generates corresponding projection data. The step of performing corresponding density imaging correction on the imaging device based on the projection data and the standard density corresponding to the corrected object includes: The projection data is used to reconstruct the target image. Determine whether the pixel values ​​of the image region in the target image corresponding to the object to be corrected meet the imaging correction conditions; If so, the X-ray imaging device is subjected to corresponding density imaging correction based on the material density corresponding to the pixel value of the image region corresponding to the corrected object in the target image and the standard density corresponding to the corrected object.

7. The device according to claim 5, characterized in that, The processor is also used for: Upon detecting a prompt indicating successful image correction, the motion mechanism is controlled to move the correction object out of the imaging area.

8. An imaging correction method, characterized in that, The X-ray imaging device applied to any one of claims 1-7 comprises: Controlling the motion mechanism to drive the correction object into the imaging area includes: in response to an imaging correction request, determining at least one target correction object identifier, and based on a pre-created correspondence between correction object identifiers and motion mechanism identifiers, determining motion mechanism identifiers corresponding to each of the at least one target correction object identifiers; and controlling the motion mechanism corresponding to each of the motion mechanism identifiers to drive the corresponding correction object into the imaging area via a control mechanism. Control the X-ray source to output imaging rays to the imaging area; The detector is controlled to receive imaging rays passing through the corrected object and generate corresponding projection data; Based on the projection data and the standard density corresponding to the object to be corrected, the imaging device performs imaging correction for the corresponding density.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that cause a processor to execute the imaging correction method of claim 8.

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