Calibration method and system for flexible X-ray imaging sensors, imaging method and system

Abstract

This invention provides a calibration method and system for flexible X-ray imaging sensors, as well as an imaging method and system, relating to the field of X-ray imaging technology. The calibration method includes: acquiring the output current of flexible X-ray imaging sensors with different bending radii under irradiation from an X-ray generator at different output intensities; and obtaining the functional relationship between bending radius, output intensity, and output current in each bending radius interval based on the output current of the flexible X-ray imaging sensors with different bending radii within each bending radius interval and the corresponding output intensity of the X-ray generator. This calibration method and system, as well as the imaging method and system, can calibrate flexible X-ray imaging sensors for different bending radius intervals according to different parts of the human body, and can select appropriate characteristic curves according to different detection sites, which can greatly reduce detection errors, improve detection accuracy, and enhance treatment effects.

Description

Technical Field

[0001] This invention relates to the field of X-ray imaging technology, and in particular to a calibration method and system for a flexible X-ray imaging sensor, as well as an imaging method and system. Background Technology

[0002] X-rays are electromagnetic waves with extremely short wavelengths (0.01–10 nm) and extremely high energies (100 eV–10 MeV). They possess strong penetrating power and are widely used in medical, industrial non-destructive testing, and security fields. X-ray imaging equipment mainly consists of an X-ray generator, X-ray imaging sensors, an image processing system, and a display device. The X-ray imaging sensor array converts the intensity of X-rays after passing through the object into electrical signals. The image processing and display device then converts the magnitude of the electrical signals at different locations into brightness levels, thereby creating an image. Currently, the application of X-ray imaging in the medical field is mainly flat-panel imaging, where the X-ray imaging sensor array is mounted on a flat substrate. However, in many situations, such as earthquakes or car accidents, injured individuals cannot be moved, necessitating portable X-ray imaging devices. For X-ray imaging sensors, a certain degree of flexibility is required to fit well against the injured area, reducing the requirements for imaging space (such as the specific space and angle requirements of the X-ray imaging sensor) and minimizing secondary injuries caused by moving the injured person.

[0003] However, the characteristic curves used in current flexible X-ray imaging sensors are relatively simple, and because they do not differentiate between the objects being detected, the detection results are inaccurate, affecting the treatment effect. For example, when a flexible X-ray imaging sensor is applied to a finger and the chest, the bending radii of the sensors for the finger and the chest are quite different. If the same characteristic curve is used to calculate the relationship between X-ray intensity and the output current of the flexible X-ray imaging sensor, errors will inevitably occur, resulting in a decrease in testing accuracy. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a calibration method and system for flexible X-ray imaging sensors, as well as an imaging method and system, to solve the problem that the characteristic curves used in the current flexible X-ray imaging sensors are relatively simple, and that the detection results are inaccurate due to the lack of differentiation of the detection objects, which affects the treatment effect.

[0005] To achieve the above and other related objectives, the present invention provides a calibration method for a flexible X-ray imaging sensor, comprising: acquiring the output current of a flexible X-ray imaging sensor with different bending radii under irradiation by an X-ray generator at different output intensities; obtaining the functional relationship between bending radius, output intensity, and output current in each bending radius interval based on the output current of the flexible X-ray imaging sensor with different bending radii in each bending radius interval and the corresponding output intensity of the X-ray generator, wherein the bending radius interval is divided according to the characteristic parts of the human body; and calibrating the characteristic curves of the flexible X-ray imaging sensor in different bending radius intervals based on the functional relationship between bending radius, output intensity, and output current in each bending radius interval.

[0006] In one embodiment of the present invention, obtaining the output current of a flexible X-ray imaging sensor with different bending radii under irradiation by different output intensities of an X-ray generator includes: folding the flexible X-ray imaging sensor into a shape corresponding to the target bending radius; and using an X-ray generator to output X-rays of different intensities to obtain the output current of the flexible X-ray imaging sensor corresponding to the target bending radius under irradiation by different output intensities of the X-ray generator.

[0007] In one embodiment of the present invention, the target bending radius is any one of a plurality of independent bending radii obtained by dividing each bending radius interval into equal intervals based on the upper limit value and lower limit value of the bending radius corresponding to each bending radius interval.

[0008] In one embodiment of the present invention, the output intensity of the X-ray generator is any one of a plurality of independent bending radii obtained by dividing the output intensity range of the X-ray generator into equal intervals based on the upper limit value and lower limit value of the output intensity corresponding to the X-ray generator.

[0009] In one embodiment of the present invention, the functional relationship between bending radius, output intensity, and output current in each bending radius interval is obtained based on the output current of flexible X-ray imaging sensors with different bending radii in each bending radius interval and the output intensity of the corresponding X-ray generator. This includes: in the target bending radius interval, obtaining the average bending radius, average output intensity, and average output current based on the output current of flexible X-ray imaging sensors with different bending radii in the target bending radius interval and the output intensity of the corresponding X-ray generator; and obtaining the functional relationship between bending radius, output intensity, and output current in the target bending radius interval based on the average bending radius, average output intensity, and average output current.

[0010] In one embodiment of the present invention, obtaining the functional relationship between bending radius, output intensity, and output current within a target bending radius range based on the average bending radius, average output intensity, and average output current includes: obtaining the mean square error of bending radius, the mean square error of output intensity, a first covariance between bending radius and output intensity, a second covariance between bending radius and output current, and a third covariance between output intensity and output current based on the mean square error of bending radius, the mean square error of output intensity, the first covariance, the second covariance, and the third covariance; and obtaining the functional relationship between bending radius, output intensity, and output current within a target bending radius range based on the mean square error of bending radius, the mean square error of output intensity, the first covariance, the second covariance, and the third covariance.

[0011] In one embodiment of the present invention, the formula for calculating the functional relationship between the bending radius, output intensity, and output current in each bending radius range is as follows: The formula for calculating the characteristic curve of a flexible X-ray imaging sensor is: ;in, Represented as the bending radius, This is expressed as output intensity. Represented as output current, This is represented as the first regression coefficient. This is represented as the second regression coefficient. It is represented as the third regression coefficient.

[0012] To achieve the above and other related objectives, the present invention also provides a flexible X-ray imaging sensor calibration system, comprising: a first acquisition unit for acquiring the output current of a flexible X-ray imaging sensor with different bending radii under irradiation by an X-ray generator with different output intensities; a function establishment unit for obtaining a functional relationship between bending radius, output intensity, and output current in each bending radius interval based on the output current of the flexible X-ray imaging sensor with different bending radii in each bending radius interval and the corresponding output intensity of the X-ray generator, wherein the bending radius interval is divided according to the characteristic parts of the human body; and a calibration unit for calibrating the characteristic curves of the flexible X-ray imaging sensor in different bending radius intervals based on the functional relationship between bending radius, output intensity, and output current in each bending radius interval.

[0013] To achieve the above and other related objectives, the present invention provides an X-ray imaging method, comprising: acquiring the target injury site of a casualty; obtaining a bending radius range corresponding to a flexible X-ray imaging sensor based on the target injury site; selecting a corresponding target characteristic curve from a constructed characteristic curve library based on the bending radius range; obtaining the X-ray intensity of the flexible X-ray imaging sensor based on the target characteristic curve, the bending radius of the flexible X-ray imaging sensor, and the output current received by the flexible X-ray imaging sensor; and performing X-ray imaging display based on the X-ray intensity.

[0014] To achieve the above and other related objectives, the present invention further provides an X-ray imaging system, comprising: a second acquisition unit for acquiring the target injury site of a patient; an interval determination unit for obtaining a bending radius interval corresponding to a flexible X-ray imaging sensor based on the target injury site; a curve selection unit for selecting a corresponding target characteristic curve from a constructed characteristic curve library based on the bending radius interval; an intensity conversion unit for obtaining the X-ray intensity of the flexible X-ray imaging sensor based on the target characteristic curve, the bending radius of the flexible X-ray imaging sensor, and the output current received by the flexible X-ray imaging sensor; and an imaging display unit for displaying X-ray images based on the X-ray intensity.

[0015] As described above, the flexible X-ray imaging sensor calibration method and system, and imaging method and system of the present invention have the following beneficial effects: by calibrating the characteristic curves of the flexible X-ray imaging sensor under different bending radius ranges according to different human body feature parts, it is possible to select appropriate characteristic curves according to different injury sites during actual use, thereby greatly reducing detection errors and effectively improving the detection accuracy of the flexible X-ray imaging sensor for targeted and precise treatment. Attached Figure Description

[0016] Figure 1 The diagram shows a flowchart of the flexible X-ray imaging sensor calibration method provided in an embodiment of the present invention.

[0017] Figure 2 The diagram shows the folding process of the flexible X-ray imaging sensor provided in an embodiment of the present invention.

[0018] Figure 3 The diagram shown is a structural block diagram of a flexible X-ray imaging sensor calibration system provided in an embodiment of the present invention.

[0019] Figure 4 The diagram shown is a structural schematic of an electronic device according to an embodiment of the present invention.

[0020] Figure 5The diagram shows a flowchart of the flexible X-ray imaging method provided in an embodiment of the present invention.

[0021] Figure 6 The diagram shown is a structural block diagram of a flexible X-ray imaging system provided in an embodiment of the present invention.

[0022] Component designation explanation

[0023] Electronic device 1; calibration system 11; memory 12; processor 13; imaging system 14; first acquisition unit 111; function establishment unit 112; calibration unit 113; second acquisition unit 141; interval determination unit 142; curve selection unit 143; intensity conversion unit 144; imaging display unit 145. Detailed Implementation

[0024] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0025] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0026] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the invention.

[0027] Please see Figure 1 This invention provides a calibration method for a flexible X-ray imaging sensor, comprising:

[0028] Step S10: Obtain the output current of flexible X-ray imaging sensors with different bending radii under different output intensities of X-ray generator irradiation;

[0029] Step S20: Based on the output current of the flexible X-ray imaging sensor with different bending radii in each bending radius interval and the output intensity of the corresponding X-ray generator, obtain the functional relationship between bending radius, output intensity and output current in each bending radius interval. The bending radius interval is divided according to the characteristic parts of the human body.

[0030] Step S30: Based on the functional relationship between bending radius, output intensity and output current in each bending radius range, the characteristic curves of the flexible X-ray imaging sensor in different bending radius ranges are calibrated.

[0031] It is clear from the above steps that when calibrating the working characteristics of a flexible X-ray imaging sensor, the output intensity, bending radius, and output current of the flexible X-ray imaging sensor under different output intensities and bending radii are obtained when the X-ray generator irradiates the flexible X-ray imaging sensor. Furthermore, based on the division of bending radius intervals, the functional relationship between bending radius, output intensity, and output current can be obtained within each bending radius interval by considering the output current of the flexible X-ray imaging sensor at different bending radii and the corresponding output intensity of the X-ray generator. Subsequently, based on the functional relationship between bending radius, output intensity, and output current within each bending radius interval, the characteristic curves of the flexible X-ray imaging sensor in different bending radius intervals are calibrated. Thus, X-ray imaging can be performed by combining the characteristic curves of different bending radius intervals with different characteristic parts of the human body.

[0032] Specifically, the bending radius range can be divided according to the characteristic parts of the human body. For example, the features of the fingers and toes are similar, so they can be divided into the same bending radius range; the features of the upper limbs and lower legs are similar, so they can be divided into the same bending radius range; the features of the thighs and the head are similar, so they can be divided into the same bending radius range; the human torso can be divided into a separate bending radius range.

[0033] Figure 1 A flowchart of a flexible X-ray imaging method according to an exemplary embodiment of this application is shown, including steps S10-S30. The following will be combined with… Figure 1 The technical solution of this application will be described in detail below.

[0034] First, step S10 is executed to obtain the output current of flexible X-ray imaging sensors with different bending radii under different output intensities of X-ray generator irradiation.

[0035] By adjusting the flexible X-ray imaging sensor according to different bending radii, the sensor is shaped to correspond to each bending radius. Then, the output intensity of the X-ray generator when irradiating the flexible X-ray imaging sensor is adjusted, so that when the flexible X-ray imaging sensor receives the emitted X-rays, they are converted into a corresponding output current.

[0036] In step S10, the output current of the flexible X-ray imaging sensor with different bending radii under different output intensities of the X-ray generator is obtained, including:

[0037] Step S101: Fold the flexible X-ray imaging sensor into a shape corresponding to the target's bending radius;

[0038] Step S102: Using an X-ray generator to output X-rays of different intensities, obtain the output current of the flexible X-ray imaging sensor corresponding to the bending radius of the target under different output intensities of the X-ray generator.

[0039] In this embodiment, when obtaining the output current of a flexible X-ray imaging sensor with different bending radii under irradiation by different output intensities of an X-ray generator, the flexible X-ray imaging sensor is folded into a shape corresponding to the target bending radius according to the target bending radius in each bending radius range. Then, with the flexible X-ray imaging sensor in the shape corresponding to the target bending radius, it is irradiated with X-rays of different intensities output by the X-ray generator, thereby enabling the flexible X-ray imaging sensor to obtain the output current corresponding to the target bending radius.

[0040] Specifically, a folding device can be used to fold a flexible X-ray imaging sensor into a shape corresponding to the target bending radius. This folding device can be a folding screen dome test bending machine. This equipment enables automatic bending radius compensation, comprehensively simulating the bending conditions of flexible products, including opening and closing folds, rolling, and twisting at different bending radii.

[0041] In step S101, the target bending radius is any one of multiple independent bending radii obtained by dividing each bending radius interval into equal intervals based on the upper limit and lower limit values ​​of the bending radius corresponding to each bending radius interval.

[0042] In this embodiment, since different bending radius ranges correspond to different characteristic parts of the human body, each bending radius range corresponds to an upper limit value and a lower limit value. The target bending radius within each bending radius range is a value between the upper and lower limits of that range, and this value is any one of multiple independent bending radii obtained by equally dividing the upper and lower limits. For example, the bending radius range for fingers and toes can be set to 1~10mm, and this range can be divided into 10 equal parts to obtain multiple independent bending radii of 1mm, 2mm, ..., 10mm. The target bending radius can be arbitrarily obtained from these multiple independent bending radii of 1mm, 2mm, ..., 10mm. Specifically, when the target bending radius is 1mm, the flexible X-ray imaging sensor is folded into the shape corresponding to the target bending radius of 1mm. Then, by using an X-ray generator to output X-rays of different intensities, the output current of the flexible X-ray imaging sensor corresponding to the target bending radius is obtained under different output intensities of the X-ray generator.

[0043] In step S102, the output intensity of the X-ray generator is any one of multiple independent bending radii obtained by dividing the output intensity range of the X-ray generator into equal intervals based on the upper limit and lower limit of the output intensity corresponding to the X-ray generator.

[0044] In this embodiment, after folding the flexible X-ray imaging sensor into a shape corresponding to the target bending radius, the flexible X-ray imaging sensor obtains a corresponding output current by using an X-ray generator to output X-rays of different intensities. The output intensity of the X-ray generator can be selected based on its upper and lower limits. That is, the output intensity of the X-ray generator is a value between the upper and lower limits, and this value is any one of several independent bending radii obtained by equally spaced divisions based on the upper and lower limits. For example, if the maximum output intensity of the X-ray generator is set to 100%, the output intensity can be divided into 10 equal parts, represented as 0%, 10%, ..., 100%, and the output intensity can be arbitrarily selected from 0%, 10%, ..., 100%. Specifically, when the target bending radius is 1 mm, the flexible X-ray imaging sensor is folded into the shape corresponding to this 1 mm bending radius. Then, by using an X-ray generator to output X-rays at 0% intensity, the output current of the flexible X-ray imaging sensor corresponding to the target bending radius under 0% X-ray generator output intensity irradiation is obtained. Similarly, by using an X-ray generator to output X-rays at 10% intensity, the output current of the flexible X-ray imaging sensor corresponding to the target bending radius under 10% X-ray generator output intensity irradiation is obtained. This process is repeated, using X-ray generators to output X-rays of different intensities, to obtain the output current of the flexible X-ray imaging sensor corresponding to the target bending radius under different X-ray generator output intensities.

[0045] Next, step S20 is executed, and the functional relationship between bending radius, output intensity and output current in each bending radius interval is obtained based on the output current of the flexible X-ray imaging sensor with different bending radii in each bending radius interval and the output intensity of the corresponding X-ray generator. The bending radius interval is divided according to the characteristic parts of the human body.

[0046] Within each bending radius range, the functional relationship between bending radius, output intensity, and output current can be established based on the output current of the flexible X-ray imaging sensor with different bending radii and the corresponding output intensity of the X-ray generator, in order to describe the correlation between bending radius, output intensity, and output current in different bending radius ranges.

[0047] In a preferred embodiment of the present invention, when calibrating different bending radius ranges, the bending radius range of the flexible X-ray imaging sensor can be divided into four segments: the first segment has a bending radius range of 1-10 mm, targeting fingers and toes; the second segment has a bending radius range of 11-100 mm, targeting the upper limbs and lower legs; the third segment has a bending radius range of 101-300 mm, targeting the thighs and head; and the fourth segment has a bending radius range of over 300 mm, targeting the human torso. Specifically, the first segment's bending radius range is divided into N equal parts based on its upper limit of 1 mm and lower limit of 10 mm, denoted as N. Where i = 1 ~ N; =1mm,…, =10mm. The maximum output intensity of the X-ray generator is set to 100%. The output intensity range of the X-ray generator is divided into M equal parts according to the upper limit of output intensity (100%) and the lower limit of output intensity (0%), denoted as M. j=1~M; =0%,..., =100%. The flexible X-ray imaging sensor is placed on the folding device, and the folding radius of the folding device is set to... Change the output intensity of the X-ray generator Record different The output current of the flexible X-ray imaging sensor is denoted as... Then, the folding radius of the folding device is successively increased from... Increase to Record different The output current of the flexible X-ray imaging sensor is denoted as... to Similarly, using the same method, the output current of the flexible X-ray imaging sensor and the corresponding output intensity of the X-ray generator were recorded for different bending radii in the second to fourth bending radius ranges.

[0048] In step S20, based on the output current of the flexible X-ray imaging sensor with different bending radii in each bending radius interval and the corresponding output intensity of the X-ray generator, the functional relationship between the bending radius, output intensity, and output current in each bending radius interval is obtained, including:

[0049] Step S201: Within the target bending radius range, based on the output current of the flexible X-ray imaging sensor with different bending radii and the corresponding output intensity of the X-ray generator within the target bending radius range, obtain the average bending radius, average output intensity, and average output current.

[0050] Step S202: Based on the average bending radius, average output intensity, and average output current, obtain the functional relationship between bending radius, output intensity, and output current within the target bending radius range.

[0051] In step S202, the functional relationship between the bending radius, output intensity, and output current within the target bending radius range is obtained based on the average bending radius, average output intensity, and average output current, including:

[0052] Step S2021: Based on the average bending radius, average output intensity, and average output current, obtain the root mean square error of bending radius, the root mean square error of output intensity, the first covariance between bending radius and output intensity, the second covariance between bending radius and output current, and the third covariance between output intensity and output current;

[0053] Step S2022: Based on the mean square error of the bending radius, the mean square error of the output intensity, the first covariance, the second covariance, and the third covariance, obtain the functional relationship between the bending radius, output intensity, and output current in the target bending radius range.

[0054] Specifically, the formula for calculating the functional relationship between bending radius, output intensity, and output current in each bending radius range is as follows: The formula for calculating the characteristic curve of a flexible X-ray imaging sensor is: ;in, Represented as the bending radius, This is expressed as output intensity. Represented as output current, This is represented as the first regression coefficient. This is represented as the second regression coefficient. It is represented as the third regression coefficient.

[0055] In a preferred embodiment of the present invention, within the target bending radius range, based on the output current of the flexible X-ray imaging sensor with different bending radii within the target bending radius range and the corresponding output intensity of the X-ray generator, the bending radius in each bending radius range is determined. Output intensity and output current When calculating the functional relationship between them, the specific steps include the following:

[0056] First, calculate the bending radius of the flexible X-ray imaging sensor. average bending radius Output intensity of X-ray generator Average output intensity and the output current of flexible X-ray imaging sensors Average output current This can be expressed as a formula: , , .

[0057] Then calculate the root mean square error of the bending radius. , Output intensity mean square deviation The first covariance between bending radius and output intensity The second covariance between bending radius and output current and the third covariance between output strength and output current. .

[0058] Then, based on the mean square deviation of the bending radius , Output intensity mean square deviation First covariance Second covariance and the third covariance The bending radius in each bending radius interval is obtained. Output intensity and output current Functional relationship between ,in, , , Furthermore, the bending radius within each bending radius interval is... Output intensity and output current Functional relationship between Characteristic curves of flexible X-ray imaging sensors in different bending radius ranges .

[0059] Please see Figure 2 , Figure 2 In one embodiment, the folding device forms a curved folding radius R when folding the flexible X-ray imaging sensor.

[0060] Please refer to 3. The present invention also provides a flexible X-ray imaging sensor calibration system 11, comprising: a first acquisition unit 111, used to acquire the output current of a flexible X-ray imaging sensor with different bending radii under irradiation with different output intensities of an X-ray generator; a function establishment unit 112, used to obtain the functional relationship between bending radius, output intensity and output current in each bending radius interval based on the output current of the flexible X-ray imaging sensor with different bending radii in each bending radius interval and the corresponding output intensity of the X-ray generator, wherein the bending radius interval is divided according to the characteristic parts of the human body; and a calibration unit 113, used to calibrate the characteristic curve of the flexible X-ray imaging sensor in different bending radius intervals based on the functional relationship between bending radius, output intensity and output current in each bending radius interval.

[0061] It should be noted that the flexible X-ray imaging sensor calibration system 11 provided in the above embodiments and the flexible X-ray imaging sensor calibration method provided in the above embodiments belong to the same concept. The specific operation methods of each module and unit have been described in detail in the method embodiments and will not be repeated here. In practical applications, the flexible X-ray imaging sensor calibration system 11 provided in the above embodiments can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. This is not a limitation here.

[0062] Please see Figure 4 The electronic device 1 may include a memory 12, a processor 13 and a bus, and may also include a computer program stored in the memory 12 and capable of running on the processor 13, such as a flexible X-ray imaging sensor calibration program.

[0063] The memory 12 includes at least one type of readable storage medium, including flash memory, portable hard drive, multimedia card, card-type memory (e.g., SD or DX memory), magnetic memory, magnetic disk, optical disk, etc. In some embodiments, the memory 12 can be an internal storage unit of the electronic device 1, such as a portable hard drive. In other embodiments, the memory 12 can be an external storage device of the electronic device 1, such as a plug-in portable hard drive, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the electronic device 1. Furthermore, the memory 12 can include both internal and external storage units of the electronic device 1. The memory 12 can be used not only to store application software and various types of data installed on the electronic device 1, such as calibration codes for flexible X-ray imaging sensors, but also to temporarily store data that has been output or will be output.

[0064] In some embodiments, the processor 13 may be composed of integrated circuits, such as a single packaged integrated circuit or multiple integrated circuits packaged with the same or different functions, including combinations of one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and various control chips. The processor 13 is the control unit of the electronic device 1, connecting various components of the electronic device 1 through various interfaces and lines. It executes programs or modules stored in the memory 12 (such as a calibration program for a flexible X-ray imaging sensor) and calls data stored in the memory 12 to perform various functions and process data in the electronic device 1.

[0065] The processor 13 executes the operating system of the electronic device 1 and various installed applications. The processor 13 executes the applications to implement the steps in the above-described flexible X-ray imaging sensor calibration method.

[0066] For example, a computer program may be divided into one or more modules, one or more of which are stored in memory 12 and executed by processor 13 to complete this application. The one or more modules may be a series of computer program instruction segments capable of performing specific functions, which describe the execution process of the computer program in electronic device 1. For example, the computer program may be divided into a first acquisition unit 111, a function establishment unit 112, and a calibration unit 113.

[0067] The integrated unit implemented as a software functional module described above can be stored in a computer-readable storage medium, which can be non-volatile or volatile. The software functional module stored in the storage medium includes several instructions to cause a computer device (which may be a personal computer, computer equipment, or network device, etc.) or processor to perform some functions of the flexible X-ray imaging methods of the various embodiments of this application.

[0068] Please see Figure 5 The present invention also provides an X-ray imaging method, comprising:

[0069] Step S100: Obtain the target injured area of ​​the wounded person;

[0070] Step S200: Based on the target injury site, obtain the bending radius range corresponding to the flexible X-ray imaging sensor;

[0071] Step S300: Select the corresponding target characteristic curve from the constructed characteristic curve library according to the bending radius range;

[0072] Step S400: Based on the target characteristic curve, the bending radius of the flexible X-ray imaging sensor, and the output current received by the flexible X-ray imaging sensor, obtain the X-ray intensity of the flexible X-ray imaging sensor.

[0073] Step S500: Image display of X-rays based on X-ray intensity.

[0074] As can be seen from the above steps, after obtaining the characteristic curve using the flexible X-ray imaging sensor calibration method of this invention, a characteristic curve library can be constructed using the characteristic curves corresponding to all bending radius intervals. During X-ray imaging, the flexible X-ray imaging sensor is first wrapped around one side of the injured area. Then, the target injured area is recorded to obtain the patient's target injured area. Based on this, the bending radius interval corresponding to the flexible X-ray imaging sensor can be determined. Then, based on the bending radius interval, the corresponding target characteristic curve is selected from the characteristic curve library. Then, based on the target characteristic curve, the bending radius of the flexible X-ray imaging sensor, and the output current of the flexible X-ray imaging sensor, the X-ray intensity received by the flexible X-ray imaging sensor is calculated. The output intensity of the X-ray generator attenuates as it passes through the injured area, thus obtaining the X-ray intensity received by the flexible X-ray imaging sensor. After obtaining the X-ray intensity, X-ray imaging is performed based on the X-ray intensity. Specifically, in the process of obtaining the X-ray intensity of the flexible X-ray imaging sensor based on the target characteristic curve, the bending radius of the flexible X-ray imaging sensor, and the output current of the flexible X-ray imaging sensor, the bending radius of the flexible X-ray imaging sensor can be determined according to the upper and lower limits of the bending radius within its corresponding bending radius range. That is, the bending radius can be the midpoint between the upper and lower limits of the bending radius. For example, when the injured part is a finger or toe, the bending radius range is 1~10mm, that is, the upper limit of the bending radius is 1mm and the lower limit is 10mm. Therefore, the bending radius can be taken as the midpoint of 5.5mm.

[0075] Please see Figure 6 The present invention further provides an X-ray imaging system 14, comprising: a second acquisition unit 141 for acquiring the target injury site of a patient; an interval determination unit 142 for obtaining the bending radius interval corresponding to the flexible X-ray imaging sensor based on the target injury site; a curve selection unit 143 for selecting the corresponding target characteristic curve from a constructed characteristic curve library based on the bending radius interval; an intensity conversion unit 144 for obtaining the X-ray intensity of the flexible X-ray imaging sensor based on the target characteristic curve, the bending radius of the flexible X-ray imaging sensor, and the output current received by the flexible X-ray imaging sensor; and an imaging display unit 145 for displaying X-ray images based on the X-ray intensity.

[0076] It should be noted that the X-ray imaging system 14 provided in the above embodiments and the X-ray imaging method provided in the above embodiments belong to the same concept. The specific ways in which each module and unit performs operations have been described in detail in the method embodiments, and will not be repeated here. In practical applications, the X-ray imaging system 14 provided in the above embodiments can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. This is not a limitation here.

[0077] In summary, the flexible X-ray imaging sensor calibration method and system, as well as the imaging method and system disclosed in this invention, calibrate the characteristic curves of the flexible X-ray imaging sensor within different bending radius ranges according to different human body feature areas. This allows for the selection of appropriate characteristic curves based on different injury sites during practical use, thereby significantly reducing detection errors and effectively improving the detection accuracy of the flexible X-ray imaging sensor for targeted and precise treatment. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and possesses high industrial application value.

[0078] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A calibration method for a flexible X-ray imaging sensor, characterized in that, include: The output current of a flexible X-ray imaging sensor with different bending radii was obtained under different output intensities of an X-ray generator. Based on the output current of the flexible X-ray imaging sensor with different bending radii in each bending radius interval and the output intensity of the corresponding X-ray generator, the functional relationship between bending radius, output intensity and output current in each bending radius interval is obtained. The bending radius interval is divided according to the characteristic parts of the human body. Based on the functional relationship between bending radius, output intensity and output current in each bending radius range, the characteristic curves of the flexible X-ray imaging sensor in different bending radius ranges are calibrated. The formula for calculating the functional relationship between bending radius, output intensity, and output current in each bending radius range is as follows: ; The formula for calculating the characteristic curve of the flexible X-ray imaging sensor is as follows: in, Represented as the bending radius, This is expressed as output intensity. Represented as output current, This is represented as the first regression coefficient. This is represented as the second regression coefficient. This is represented as the third regression coefficient. This represents the average output current. This represents the average bending radius. This represents the average output intensity. This represents the mean square error of the bending radius. This represents the mean square error of the output intensity. This represents the first covariance between the bending radius and the output intensity. This represents the second covariance between the bending radius and the output current. This represents the third covariance between the output strength and the output current.

2. The calibration method for a flexible X-ray imaging sensor according to claim 1, characterized in that, The output current of a flexible X-ray imaging sensor with different bending radii under irradiation by different output intensities of an X-ray generator was obtained, including: The flexible X-ray imaging sensor is folded into a shape corresponding to the target's bending radius; By using an X-ray generator to output X-rays of different intensities, the output current of a flexible X-ray imaging sensor corresponding to the bending radius of the target under different output intensities of the X-ray generator is obtained.

3. The calibration method for a flexible X-ray imaging sensor according to claim 2, characterized in that, The target bending radius is any one of multiple independent bending radii obtained by dividing each bending radius interval into equal intervals based on the upper limit and lower limit of the bending radius corresponding to each bending radius interval.

4. The calibration method for a flexible X-ray imaging sensor according to claim 2, characterized in that, The output intensity of the X-ray generator is any one of multiple independent bending radii obtained by dividing the output intensity range of the X-ray generator into equal intervals based on the upper limit and lower limit of the output intensity corresponding to the X-ray generator.

5. The calibration method for a flexible X-ray imaging sensor according to claim 1, characterized in that, Based on the output current of the flexible X-ray imaging sensor with different bending radii within each bending radius range and the corresponding output intensity of the X-ray generator, the functional relationship between bending radius, output intensity, and output current within each bending radius range is obtained, including: Within the target bending radius range, based on the output current of the flexible X-ray imaging sensor with different bending radii and the corresponding output intensity of the X-ray generator, the average bending radius, average output intensity, and average output current are obtained. Based on the average bending radius, average output intensity, and average output current, the functional relationship between bending radius, output intensity, and output current within the target bending radius range is obtained.

6. The calibration method for a flexible X-ray imaging sensor according to claim 5, characterized in that, The functional relationship between bending radius, output intensity, and output current within the target bending radius range is obtained based on the average bending radius, average output intensity, and average output current. Based on the average bending radius, average output intensity, and average output current, we obtain the root mean square error of bending radius, the root mean square error of output intensity, the first covariance between bending radius and output intensity, the second covariance between bending radius and output current, and the third covariance between output intensity and output current. Based on the root mean square error of the bending radius, the root mean square error of the output intensity, the first covariance, the second covariance, and the third covariance, the functional relationship between the bending radius, output intensity, and output current in the target bending radius range is obtained.

7. A calibration system for a flexible X-ray imaging sensor, characterized in that, include: The first acquisition unit is used to acquire the output current of a flexible X-ray imaging sensor with different bending radii under different output intensities of X-ray generator irradiation. The function establishment unit is used to obtain the functional relationship between bending radius, output intensity, and output current in each bending radius interval based on the output current of the flexible X-ray imaging sensor with different bending radii and the corresponding output intensity of the X-ray generator. The bending radius intervals are divided according to characteristic parts of the human body. The calibration unit is used to calibrate the characteristic curves of the flexible X-ray imaging sensor in different bending radius ranges based on the functional relationship between bending radius, output intensity and output current in each bending radius range. The formula for calculating the functional relationship between bending radius, output intensity, and output current in each bending radius range is as follows: ; The formula for calculating the characteristic curve of the flexible X-ray imaging sensor is as follows: in, Represented as the bending radius, This is expressed as output intensity. Represented as output current, This is represented as the first regression coefficient. This is represented as the second regression coefficient. This is represented as the third regression coefficient. This represents the average output current. This represents the average bending radius. This represents the average output intensity. This represents the mean square error of the bending radius. This represents the mean square error of the output intensity. This represents the first covariance between the bending radius and the output intensity. This represents the second covariance between the bending radius and the output current. This represents the third covariance between the output strength and the output current.

8. An X-ray imaging method, characterized in that, include: Obtain the target injured area of ​​the wounded soldier; Based on the target injury site, the bending radius range corresponding to the flexible X-ray imaging sensor is obtained; Based on the bending radius range, a corresponding target characteristic curve is selected from the constructed characteristic curve library, wherein the target characteristic curve is obtained based on the flexible X-ray imaging sensor calibration method in claim 1; The X-ray intensity of the flexible X-ray imaging sensor is obtained based on the target characteristic curve, the bending radius of the flexible X-ray imaging sensor, and the output current received by the flexible X-ray imaging sensor. X-ray imaging is performed based on the X-ray intensity.

9. An X-ray imaging system, characterized in that, include: The second acquisition unit is used to acquire the target injured part of the wounded person; The interval determination unit is used to obtain the bending radius interval corresponding to the flexible X-ray imaging sensor based on the target injury site; The curve selection unit is used to select a corresponding target characteristic curve from the constructed characteristic curve library according to the bending radius range, wherein the target characteristic curve is obtained based on the flexible X-ray imaging sensor calibration method in claim 1; An intensity conversion unit is used to obtain the X-ray intensity of the flexible X-ray imaging sensor based on the target characteristic curve, the bending radius of the flexible X-ray imaging sensor, and the output current received by the flexible X-ray imaging sensor. as well as An imaging display unit is used to perform X-ray imaging display based on the X-ray intensity.

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