Flexible X-ray imaging sensor calibration method and system and flexible X-ray imaging sensor imaging method and system

Abstract

The invention provides a flexible X-ray imaging sensor calibration method and system and an imaging method and system, and relates to the technical field of X-ray imaging, and the calibration method comprises the steps: obtaining the output current of a flexible X-ray imaging sensor with different bending radiuses under the irradiation of different output intensities of an X-ray generator; and according to the output current of the flexible X-ray imaging sensors with different bending radiuses in each bending radius interval and the output intensity of the corresponding X-ray generator, obtaining a function relationship among the bending radius, the output intensity and the output current in each bending radius interval. According to the calibration method and system and the imaging method and system, the flexible X-ray imaging sensor can be calibrated in different bending radius intervals according to different parts of a human body, and proper characteristic curves can be selected according to different detection parts, so that the detection error can be greatly reduced, the detection precision can be improved, and the treatment effect can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of X-ray imaging, and particularly to a calibration method and system for a flexible X-ray imaging sensor, and an imaging method and system. Background Art

[0002] X-rays are electromagnetic waves with extremely short wavelengths (0.01 - 10 nm) and extremely high energies (100 eV - 10 MeV), having strong penetrability and being widely used in fields such as medical treatment, industrial non-destructive testing, and security. An X-ray imaging device mainly consists of an X-ray generator, an X-ray imaging sensor, an image processing system, a display device, etc. The X-ray imaging sensor array converts the intensity of X-rays after passing through the detected object into an electrical signal, and the image processing and display device then converts the magnitudes of electrical signals at different positions into levels of brightness, thereby performing imaging. Currently, the main application of X-ray imaging in the medical field is flat panel imaging, that is, the X-ray imaging sensor array is on a flat substrate. However, in many situations, such as when an earthquake or a car accident occurs and the injured person cannot be moved, a portable X-ray imaging device is required. For an X-ray imaging sensor, it needs to have a certain flexibility so as to fit well on the injured part of the wounded person, reducing the requirements for the imaging space (such as specific space and angle requirements for the X-ray imaging sensor, etc.) and secondary injuries caused by moving the wounded person.

[0003] However, the characteristic curves currently used for flexible X-ray imaging sensors are relatively single, and since the detected objects are not distinguished, the detection results are inaccurate, affecting the treatment effect. For example, when a flexible X-ray imaging sensor is attached to a finger and the front chest, since there are significant differences in the bending radii of the flexible X-ray imaging sensors corresponding to the finger and the front chest, if the same characteristic curve is used to convert the relationship between the X-ray intensity and the output current of the flexible X-ray imaging sensor, there will surely be errors, thereby causing a decrease in the test accuracy. Summary of the Invention

[0004] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a calibration method and system for a flexible X-ray imaging sensor, and an imaging method and system, which are used to solve the problems in the prior art that the characteristic curves currently used for flexible X-ray imaging sensors are relatively single, and since the detected objects are not distinguished, the detection results are inaccurate, affecting 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, including: obtaining the output current of a flexible X-ray imaging sensor with different bending radii under different output intensities of an X-ray generator; obtaining the functional relationship among the bending radius, output intensity, and output current in each bending radius interval according to 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 each bending radius interval, where the bending radius intervals are divided according to the characteristic parts of the human body; calibrating the characteristic curves of the flexible X-ray imaging sensor in different bending radius intervals according to the functional relationship among the bending radius, output intensity, and output current in each bending radius interval.

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

[0007] In an embodiment of the present invention, the target bending radius is any one of a plurality of independent bending radii obtained by equally spacing each bending radius interval according to the upper limit value and lower limit value of the bending radius corresponding to each bending radius interval.

[0008] In an 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 equally spacing the output intensity interval of the X-ray generator according to the upper limit value and lower limit value of the output intensity corresponding to the X-ray generator.

[0009] In an embodiment of the present invention, obtaining the functional relationship among the bending radius, output intensity, and output current in each bending radius interval according to 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 each bending radius interval includes: in the target bending radius interval, obtaining the average bending radius, average output intensity, and average output current according to 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 the target bending radius interval; obtaining the functional relationship among the bending radius, output intensity, and output current in the target bending radius interval according to the average bending radius, average output intensity, and average output current.

[0010] In an embodiment of the present invention, obtaining the functional relationship among the bending radius, output intensity, and output current in the target bending radius interval according to the average bending radius, average output intensity, and average output current includes: obtaining the mean square deviation of the bending radius, mean square deviation of the output intensity, first covariance between the bending radius and output intensity, second covariance between the bending radius and output current, and third covariance between the output intensity and output current according to the average bending radius, average output intensity, and average output current; and obtaining the functional relationship among the bending radius, output intensity, and output current in the target bending radius interval according to the mean square deviation of the bending radius, mean square deviation of the output intensity, first covariance, second covariance, and third covariance.

[0011] In an embodiment of the present invention, the calculation formula for the functional relationship among the bending radius, output intensity, and output current in each bending radius interval is: I = k 0 + k 1 × R + k 2 × Q; the calculation formula for the characteristic curve of the flexible X-ray imaging sensor is: wherein, R represents the bending radius, Q represents the output intensity, I represents the output current, k 0 represents the first regression coefficient, k 1 represents the second regression coefficient, and k 2 represents the third regression coefficient.

[0012] To achieve the above object and other related objects, the present invention further provides a flexible X-ray imaging sensor calibration system, including: a first acquisition unit for acquiring the output current of the flexible X-ray imaging sensor with different bending radii under different output intensities of the X-ray generator; a function establishment unit for obtaining the functional relationship among the bending radius, output intensity, and output current in each bending radius interval according to 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 and obtaining the characteristic curve of the flexible X-ray imaging sensor in different bending radius intervals according to the functional relationship among the bending radius, output intensity, and output current in each bending radius interval.

[0013] To achieve the above and other related objectives, the present invention further provides an X-ray imaging method, including: acquiring a target injured part of the wounded; obtaining a corresponding bending radius range of the flexible X-ray imaging sensor according to the target injured part; selecting a corresponding target characteristic curve from the constructed characteristic curve library according to the bending radius range; obtaining the X-ray intensity of the flexible X-ray imaging sensor according to 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 according to the X-ray intensity.

[0014] To achieve the above and other related objectives, the present invention further provides an X-ray imaging system, including: a second acquisition unit for acquiring a target injured part of the wounded; an interval determination unit for obtaining a corresponding bending radius range of the flexible X-ray imaging sensor according to the target injured part; a curve selection unit for selecting a corresponding target characteristic curve from the constructed characteristic curve library according to the bending radius range; an intensity conversion unit for obtaining the X-ray intensity of the flexible X-ray imaging sensor according to 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 performing X-ray imaging display according to the X-ray intensity.

[0015] As described above, the flexible X-ray imaging sensor calibration method and system, 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 characteristic parts, it is possible to select appropriate characteristic curves according to different injured parts during actual use, thereby greatly reducing the detection error and effectively improving the detection accuracy of the flexible X-ray imaging sensor for targeted precise treatment. Description of the Drawings

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

[0017] Figure 2 It shows a schematic diagram of the process of folding the flexible X-ray imaging sensor provided by an embodiment of the present invention.

[0018] Figure 3 It shows a structural block diagram of the flexible X-ray imaging sensor calibration system provided by an embodiment of the present invention.

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

[0020] Figure 5It is a schematic flowchart showing the flexible X-ray imaging method provided by an embodiment of the present invention.

[0021] Figure 6 It is a block diagram showing the structure of the flexible X-ray imaging system provided by an embodiment of the present invention.

[0022] Description of component labels

[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 manners

[0024] The following uses specific specific examples to illustrate the implementation manners 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 implementation manners. 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, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0025] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Therefore, only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The types, quantities, and proportions of the components in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0026] In the following description, a large number of details are explored to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0027] Please refer to Figure 1 , the present invention provides a flexible X-ray imaging sensor calibration method, including:

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

[0029] Step S20: According to 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, obtain the functional relationship among the bending radius, output intensity, and output current in each bending radius interval, where the bending radius intervals are divided according to the characteristic parts of the human body.

[0030] Step S30: According to the functional relationship among the bending radius, output intensity, and output current in each bending radius interval, calibrate the characteristic curves of the flexible X-ray imaging sensor in different bending radius intervals.

[0031] It is not difficult to see from the above steps that when calibrating the working characteristics of the flexible X-ray imaging sensor, the output intensity, bending radius of the X-ray generator when irradiating the flexible X-ray imaging sensor, and the output current of the flexible X-ray imaging sensor under different output intensities and different bending radii are obtained. Further, according to the division of the bending radius intervals, in each bending radius interval, according to 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 functional relationship among the bending radius, output intensity, and output current in each bending radius interval can be obtained. Immediately afterwards, according to the functional relationship among the bending radius, output intensity, and output current in each bending radius interval, the characteristic curves of the flexible X-ray imaging sensor in different bending radius intervals are calibrated, so as to perform X-ray imaging according to the characteristic curves in different bending radius intervals in combination with different characteristic parts of the human body.

[0032] Specifically, the bending radius intervals can be divided according to the characteristic parts of the human body. For example, the finger and toe parts have relatively similar characteristics and can be divided into the same bending radius interval; the upper limb and calf parts have relatively similar characteristics and can be divided into the same bending radius interval; the thigh and head parts have relatively similar characteristics and can be divided into the same bending radius interval; the human torso can be separately divided into a bending radius interval.

[0033] Figure 1 The flowchart of the flexible X-ray imaging method in an exemplary embodiment of the present application is shown, including Step S10 - Step S30. The technical solution of the present application will be elaborated in detail below in combination with Figure 1 to elaborate the technical solution of the present application in detail.

[0034] First, execute Step S10 to obtain the output current of the flexible X-ray imaging sensor with different bending radii under different output intensities of the X-ray generator.

[0035] By adjusting the flexible X-ray imaging sensor according to different bending radii, the flexible X-ray imaging sensor is adjusted into a shape corresponding to different bending radii. Then, the output intensity of the X-ray generator when irradiating the flexible X-ray imaging sensor is adjusted. Thus, when the flexible X-ray imaging sensor receives the X-rays emitted by the flexible X-ray imaging sensor, it will be converted into a corresponding output current.

[0036] In step S10, obtaining the output currents of the flexible X-ray imaging sensors with different bending radii under the irradiation of different output intensities of the X-ray generator includes:

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

[0038] Step S102: Using the X-ray generator to output X-rays with different intensities, and obtaining the output currents of the flexible X-ray imaging sensor corresponding to the target bending radius under the irradiation of different output intensities of the X-ray generator.

[0039] In this embodiment, when obtaining the output currents of the flexible X-ray imaging sensors with different bending radii under the irradiation of different output intensities of the X-ray generator, for the flexible X-ray imaging sensor, according to the target bending radius in each bending radius interval, the flexible X-ray imaging sensor is folded into a shape corresponding to the target bending radius. And when the flexible X-ray imaging sensor is in the shape corresponding to the target bending radius, by using the X-ray generator to output X-rays with different intensities to irradiate the flexible X-ray imaging sensor with the shape corresponding to the target bending radius, the flexible X-ray imaging sensor can obtain the output current corresponding to the target bending radius.

[0040] Specifically, a folding device can be used to fold the flexible X-ray imaging sensor into a shape corresponding to the target bending radius. The folding device can be a folding screen dome folding test bending machine. Through this device, the bending radius automatic compensation function can be realized, and the bending conditions of flexible products can be more comprehensively simulated, including opening and closing folding, rolling, twisting, etc. in different bending radii.

[0041] In step S101, the target bending radius is any one of a plurality of independent bending radii obtained by equally spacing each bending radius interval according to the upper limit value and the lower limit value of the bending radius corresponding to each bending radius interval.

[0042] In this embodiment, since the characteristic parts of the human body corresponding to different bending radius intervals are different, each bending radius interval corresponds to an upper limit value and a lower limit value of the bending radius. Among them, the target bending radius in each bending radius interval is a value between the upper limit value and the lower limit value of the bending radius in this bending radius interval, and this value is also any one of multiple independent bending radii obtained by equally spacing the upper limit value and the lower limit value of the bending radius. For example, the bending radius interval of the fingers and toes can be set to 1-10 mm, and this bending radius interval can be equally divided into 10 parts to obtain multiple independent bending radii of 1 mm, 2 mm,..., 10 mm, and the target bending radius can be arbitrarily obtained from the multiple independent bending radii of 1 mm, 2 mm,..., 10 mm. Specifically, when the target bending radius is 1 mm, the flexible X-ray imaging sensor is folded into the shape corresponding to the target bending radius of 1 mm, and then by using the X-ray generator to output X-rays with different intensities, the output current of the flexible X-ray imaging sensor corresponding to the target bending radius is obtained under the irradiation of 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 equally spacing the output intensity interval of the X-ray generator according to the upper limit value and the lower limit value of the output intensity corresponding to the X-ray generator.

[0044] In this embodiment, after folding the flexible X-ray imaging sensor into the shape corresponding to the target bending radius, different intensities of X-rays are output by using an X-ray generator to enable the flexible X-ray imaging sensor to obtain corresponding output currents. The output intensity of the X-ray generator can be selected according to the upper limit value and the lower limit value of the output intensity corresponding to the X-ray generator. That is, the output intensity of the X-ray generator is a value between the upper limit value and the lower limit value of the output intensity, and this value is also any one of multiple independent bending radii obtained by equally spacing division based on the upper limit value and the lower limit value of the output intensity. For example, if the maximum output intensity of the X-ray generator is set to 100%, the output intensity of the X-ray generator can be divided into 10 equal parts, namely 0%, 10%,..., 100% respectively, and the output intensity of the X-ray generator can be arbitrarily obtained 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 the target bending radius of 1 mm, and then by using the X-ray generator to output X-rays with an intensity of 0%, the output current of the flexible X-ray imaging sensor corresponding to the target bending radius under the irradiation of the X-ray generator with an output intensity of 0% is obtained; then by using the X-ray generator to output X-rays with an intensity of 10%, the output current of the flexible X-ray imaging sensor corresponding to the target bending radius under the irradiation of the X-ray generator with an output intensity of 10% is obtained. And so on, by using the X-ray generator to output X-rays with different intensities, the output currents of the flexible X-ray imaging sensor corresponding to the target bending radius under the irradiation of the X-ray generator with different output intensities are obtained.

[0045] Next, step S20 is executed. According to the output currents of the flexible X-ray imaging sensors with different bending radii and the corresponding output intensities of the X-ray generators in each bending radius interval, the functional relationships among the bending radius, the output intensity, and the output current in each bending radius interval are obtained, where the bending radius intervals are divided according to the characteristic parts of the human body.

[0046] In each bending radius interval of different bending radius intervals, according to the output currents of the flexible X-ray imaging sensors with different bending radii and the corresponding output intensities of the X-ray generators, the functional relationships among the bending radius, the output intensity, and the output current in each bending radius interval can be respectively established to represent the correlation among the bending radius, the output intensity, and the output current in different bending radius intervals.

[0047] In a preferred embodiment of the present invention, when calibrating different bending radius intervals, the bending radius intervals of the flexible X-ray imaging sensor can be divided into 4 segments. The bending radius interval of the first segment is 1 - 10 mm, for fingers and toes; the bending radius interval of the second segment is 11 - 100 mm, for the upper limbs and calves; the bending radius interval of the third segment is 101 - 300 mm, for the thighs and head; the bending radius interval of the fourth segment is above 300 mm, for the human torso. Specifically, for the bending radius interval of the first segment, according to its upper bending radius value of 1 mm and lower bending radius value of 10 mm, it is equally divided into N parts, denoted as R i , where i = 1 - N; R 1 = 1 mm,..., R N = 10 mm. Set the maximum output intensity of the X-ray generator to 100%, and divide the output intensity interval of the X-ray generator into M parts according to the upper output intensity value of 100% and lower output intensity value of 0%, denoted as Q j , j = 1 - M; Q 1 = 0%,..., Q j = 100%. Place the flexible X-ray imaging sensor on the folding device, set the folding radius of the folding device to R 1 , change the output intensity Q j , record the output current of the flexible X-ray imaging sensor at different Q j , denoted as I 1j . Then, sequentially increase the folding radius of the folding device from R 2 to R N , record the output current of the flexible X-ray imaging sensor at different Q j , denoted as I 2j to I ij . Similarly, using the same method, record the output current of the flexible X-ray imaging sensor with different bending radii in the second to fourth bending radius intervals and the corresponding output intensity of the X-ray generator.

[0048] In step S20, according to 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 each bending radius interval, obtain the functional relationship between the bending radius, output intensity, and output current in each bending radius interval, including:

[0049] Step S201: In the target bending radius interval, according to 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 the target bending radius interval, obtain the average bending radius, average output intensity, and average output current;

[0050] Step S202: Obtain the functional relationship among the bending radius, output intensity, and output current within the target bending radius range based on the average bending radius, average output intensity, and average output current.

[0051] In step S202, obtaining the functional relationship among the bending radius, output intensity, and output current within the target bending radius range based on the average bending radius, average output intensity, and average output current includes:

[0052] Step S2021: Obtain the mean square deviation of the bending radius, mean square deviation of the output intensity, first covariance between the bending radius and output intensity, second covariance between the bending radius and output current, and third covariance between the output intensity and output current based on the average bending radius, average output intensity, and average output current;

[0053] Step S2022: Obtain the functional relationship among the bending radius, output intensity, and output current within the target bending radius range based on the mean square deviation of the bending radius, mean square deviation of the output intensity, first covariance, second covariance, and third covariance.

[0054] Specifically, the calculation formula for the functional relationship among the bending radius, output intensity, and output current in each bending radius range is: I = k 0 + k 1 × R + k 2 × Q; the calculation formula for the characteristic curve of the flexible X-ray imaging sensor is: where R represents the bending radius, Q represents the output intensity, I represents the output current, k 0 represents the first regression coefficient, k 1 represents the second regression coefficient, k 2 represents 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 corresponding to different bending radii and the output intensity of the corresponding X-ray generator in the target bending radius range, when calculating the functional relationship among the bending radius R i , output intensity Q j , and output current I ij in each bending radius range, the following steps are specifically included:

[0056] First, calculate the average bending radius R i of the bending radius of the flexible X-ray imaging sensor, the average output intensity Q avg of the output intensity of the X-ray generator, and the average output current I j of the output current of the flexible X-ray imaging sensor respectively avg and ijThe average value of the output current I avg , which is expressed by the formula:

[0057] Then calculate the mean square deviation of the bending radius The mean square deviation of the output intensity The first covariance between the bending radius and the output intensity The second covariance between the bending radius and the output current And the third covariance between the output intensity and the output current

[0058] Subsequently, according to the mean square deviation of the bending radius R R , the mean square deviation of the output intensity Q Q , the first covariance R RQ , the second covariance R RI , and the third covariance Q QI , obtain the functional relationship I = k i + k j × R + k ij × Q between the bending radius R 0 + k 1 × R + k 2 × Q, where k 0 = I avg - k 1 × R avg - k 2 × Q avg , Furthermore, convert the functional relationship I = k i + k j × R + k ij × Q between the bending radius R 0 + k 1 × R + k 2 × Q in each bending radius interval into the characteristic curve of the flexible X-ray imaging sensor in different bending radius intervals

[0059] Please refer to Figure 2 , Figure 2 In an embodiment given, when the folding device folds the flexible X-ray imaging sensor, a bent folding radius R will be formed.

[0060] Referring to FIG. 3, the present invention further provides a calibration system 11 for a flexible X-ray imaging sensor, including: a first acquisition unit 111, configured to acquire the output current of the flexible X-ray imaging sensor with different bending radii under the irradiation of different output intensities of an X-ray generator; a function establishment unit 112, configured to obtain the functional relationship among the bending radius, output intensity, and output current in each bending radius interval according to 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 each bending radius interval, where the bending radius intervals are divided according to the characteristic parts of the human body; and a calibration unit 113, configured to calibrate the characteristic curves of the flexible X-ray imaging sensor in different bending radius intervals according to the functional relationship among the bending radius, output intensity, and output current in each bending radius interval.

[0061] It should be noted that the calibration system 11 for the flexible X-ray imaging sensor provided in the above embodiment and the calibration method for the flexible X-ray imaging sensor provided in the above embodiment belong to the same concept. The specific manners in which each module and unit perform operations have been described in detail in the method embodiment, and will not be repeated here. In practical applications, the calibration system 11 for the flexible X-ray imaging sensor provided in the above embodiment can, according to needs, allocate the above functions to different functional modules, that is, divide the internal structure of the device into different functional modules to complete all or part of the functions described above, and no limitation will be made here either.

[0062] Please refer to Figure 4 , the electronic device 1 may include a memory 12, a processor 13, and a bus, and may further include a computer program stored in the memory 12 and executable on the processor 13, such as a calibration program for the flexible X-ray imaging sensor.

[0063] Among them, the memory 12 at least includes one type of readable storage medium, and the readable storage medium includes flash memory, mobile hard disk, multimedia card, card-type memory (such as SD or DX memory, etc.), magnetic memory, magnetic disk, optical disc, etc. The memory 12 can be an internal storage unit of the electronic device 1 in some embodiments, such as the mobile hard disk of the electronic device 1. The memory 12 can also be an external storage device of the electronic device 1 in other embodiments, such as a plug-in mobile hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, etc. equipped on the electronic device 1. Further, the memory 12 can also include both the internal storage unit and the external storage device of the electronic device 1. The memory 12 can be used not only to store application software and various types of data installed in the electronic device 1, such as the code for calibrating the flexible X-ray imaging sensor, etc., but also to temporarily store the data that has been output or will be output.

[0064] In some embodiments, the processor 13 can be composed of integrated circuits. For example, it can be composed of a single packaged integrated circuit, or can be composed of multiple integrated circuits with the same or different functions packaged, including a combination of one or more Central Processing Units (CPUs), microprocessors, digital processing chips, graphics processors, and various control chips, etc. The processor 13 is the control core (Control Unit) of the electronic device 1, connecting various components of the entire electronic device 1 through various interfaces and lines, and by running or executing the programs or modules stored in the memory 12 (such as the flexible X-ray imaging sensor calibration program, etc.), and calling the data stored in the memory 12, to execute various functions of the electronic device 1 and process data.

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

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

[0067] The integrated unit implemented in the form of software function modules can be stored in a computer-readable storage medium, which can be non-volatile or volatile. The above software function modules are stored in a storage medium and include several instructions to enable a computer device (which can be a personal computer, a computer device, or a network device, etc.) or a processor to execute part of the functions of the flexible X-ray imaging method according to various embodiments of the present application.

[0068] Please refer to Figure 5 , the present invention also provides an X-ray imaging method, including:

[0069] Step S100: Obtain the target injured part of the wounded.

[0070] Step S200: Obtain the corresponding bending radius interval of the flexible X-ray imaging sensor according to the target injured part.

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

[0072] Step S400: Obtain the X-ray intensity of the flexible X-ray imaging sensor according to 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.

[0073] Step S500: Perform X-ray imaging display according to the X-ray intensity.

[0074] As can be seen from the above steps, after obtaining the characteristic curve through the calibration method of the flexible X-ray imaging sensor of the present invention, a characteristic curve library can be constructed through the characteristic curves corresponding to all bending radius intervals. During the X-ray imaging process, first wrap the flexible X-ray imaging sensor on one side of the injured part, and then obtain the target injured part of the wounded by inputting the target injured part. Thus, according to the obtained target injured part of the wounded, the corresponding bending radius interval of the flexible X-ray imaging sensor can be determined, and then according to the bending radius interval, the corresponding target characteristic curve can be selected from the characteristic curve library. Then, according to 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. Among them, the X-ray of the X-ray generator passes through the injured area, and the output intensity of the X-ray generator will decay to obtain the X-ray intensity received by the flexible X-ray imaging sensor. After obtaining the X-ray intensity, X-ray imaging display is performed according to the X-ray intensity. Specifically, when obtaining the X-ray intensity of the flexible X-ray imaging sensor according to 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 limit value and the lower limit value of the bending radius of the corresponding bending radius interval, that is, the bending radius can be the median of the upper limit value and the lower limit value of the bending radius. For example, when the injured part is a finger or a toe, the bending radius interval at this time is 1-10 mm, that is, the upper limit value of the bending radius is 1 mm and the lower limit value of the bending radius is 10 mm, then the bending radius can take the median value of 5.5 mm.

[0075] Please refer to Figure 6 , the present invention further provides an X-ray imaging system 14, including: a second acquisition unit 141 for acquiring the target injured part of the wounded; an interval determination unit 142 for obtaining the corresponding bending radius interval of the flexible X-ray imaging sensor according to the target injured part; a curve selection unit 143 for selecting the corresponding target characteristic curve from the constructed characteristic curve library according to the bending radius interval; an intensity conversion unit 144 for obtaining the X-ray intensity of the flexible X-ray imaging sensor according to 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 performing X-ray imaging display according to the X-ray intensity.

[0076] It should be noted that the X-ray imaging system 14 provided in the above embodiment and the X-ray imaging method provided in the above embodiment belong to the same concept. The specific manners in which each module and unit perform operations have been described in detail in the method embodiment, and will not be elaborated herein. In practical applications, the X-ray imaging system 14 provided in the above embodiment may, according to needs, allocate the above functions to different functional modules, that is, divide the internal structure of the device into different functional modules to complete all or part of the functions described above. This is not limited herein either.

[0077] In summary, for the flexible X-ray imaging sensor calibration method and system, imaging method and system disclosed in the present invention, by calibrating the characteristic curves of the flexible X-ray imaging sensor in different bending radius ranges according to different human characteristic parts, it is possible to select an appropriate characteristic curve according to different injured parts during actual use, thereby greatly reducing the detection error and effectively improving the detection accuracy of the flexible X-ray imaging sensor for targeted precise treatment. Therefore, the present invention effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0078] The above embodiments are only illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A method for calibrating a flexible X-ray imaging sensor, characterized in that: include: Obtain the output current of the flexible X-ray imaging sensor with different bending radii under different output intensities of the X-ray generator; According to 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, a functional relationship between the bending radius, the output intensity and the output current in each bending radius interval is obtained, wherein the bending radius interval is divided according to characteristic parts of the human body; According to the functional relationship among the bending radius, output intensity and output current in each bending radius interval, the characteristic curve of the flexible X-ray imaging sensor in different bending radius intervals is calibrated.

2. The method for calibrating a flexible X-ray imaging sensor according to claim 1, characterized in that: Obtain the output current of the flexible X-ray imaging sensor with different bending radii under different output intensities of the X-ray generator, including: Folding the flexible X-ray imaging sensor into a shape corresponding to the target bending radius; An X-ray generator is used to output X-rays of different intensities, and the output current of the flexible X-ray imaging sensor corresponding to the target bending radius under the irradiation of the X-ray generator with different output intensities is obtained.

3. The method for calibrating a flexible X-ray imaging sensor according to claim 2, characterized in that: The target bending radius is any one of a plurality of independent bending radii obtained by equally-spaced division of each bending radius interval according to the bending radius upper limit value and the bending radius lower limit value corresponding to each bending radius interval.

4. The method for calibrating 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 a plurality of independent bending radii obtained by equally-spaced division of the output intensity interval of the X-ray generator according to an output intensity upper limit value and an output intensity lower limit value corresponding to the X-ray generator.

5. The method for calibrating a flexible X-ray imaging sensor according to claim 1, characterized in that: According to 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, a functional relationship between the bending radius, the output intensity and the output current in each bending radius interval is obtained, including: In the target bending radius interval, according to the output current of the flexible X-ray imaging sensor with different bending radii in the target bending radius interval and the output intensity of the corresponding X-ray generator, an average value of the bending radius, an average value of the output intensity and an average value of the output current are obtained; According to the average value of the bending radius, the average value of the output intensity and the average value of the output current, a functional relationship among the bending radius, the output intensity and the output current in the target bending radius interval is obtained.

6. The method for calibrating a flexible X-ray imaging sensor according to claim 5, characterized in that: The functional relationship between the bending radius, the output intensity and the output current in the target bending radius range is obtained according to the average bending radius, the average output intensity and the average output current, including: According to the average value of the bending radius, the average value of the output intensity and the average value of the output current, a mean square error of the bending radius, a mean square error of the output intensity, a first covariance between the bending radius and the output intensity, a second covariance between the bending radius and the output current, and a third covariance between the output intensity and the output current are obtained; A functional relationship among the bending radius, the output intensity and the output current in the target bending radius interval is obtained according to the bending radius mean square error, the output intensity mean square error, the first covariance, the second covariance and the third covariance.

7. The method for calibrating a flexible X-ray imaging sensor according to claim 1, characterized in that: The calculation formula of the functional relationship between the bending radius, output intensity and output current in each bending radius interval is: I = k0 + k1 × R + k2 × Q; The calculation formula of the characteristic curve of the flexible X-ray imaging sensor is: Wherein, R represents the bending radius, Q represents the output intensity, I represents the output current, k0 represents the first regression coefficient, k1 represents the second regression coefficient, and k2 represents the third regression coefficient.

8. A flexible X-ray imaging sensor calibration system, characterized in that: include: A first acquisition unit is used to acquire output currents of flexible X-ray imaging sensors with different bending radii under irradiation with different output intensities of the X-ray generator; A function building unit is used to obtain a functional relationship between the bending radius, the output intensity and the output current in each bending radius interval according to 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, wherein the bending radius interval is divided according to the characteristic parts of the human body; as well as The calibration unit is used to calibrate the characteristic curve of the flexible X-ray imaging sensor in different bending radius intervals according to the functional relationship between the bending radius, output intensity and output current in each bending radius interval.

9. An X-ray imaging method, characterized in that: include: Obtain the target injured part of the casualty; According to the target injured part, a bending radius interval corresponding to the flexible X-ray imaging sensor is obtained; According to the bending radius interval, selecting a corresponding target characteristic curve from a constructed characteristic curve library; Obtaining an X-ray intensity of the flexible X-ray imaging sensor according to 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 according to the X-ray intensity.

10. An X-ray imaging system, characterized in that: include: The second acquisition unit is used to acquire the target injured part of the injured person; An interval determination unit, configured to obtain a bending radius interval corresponding to the flexible X-ray imaging sensor according to the target injured part; A curve selection unit, configured to select a corresponding target characteristic curve from a constructed characteristic curve library according to the bending radius interval; an intensity conversion unit, configured to obtain the X-ray intensity of the flexible X-ray imaging sensor according to 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 according to the X-ray intensity.

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