A guiding device, a radiographic inspection device, a method of using the same, and a computer-readable storage medium

Abstract

This invention relates to a guidance device for a radiographic inspection apparatus. The radiographic inspection apparatus includes a radiation dose detection unit for detecting the radiation dose received thereon. The guidance device includes: an information acquisition unit configured to acquire position information of the radiation dose detection unit and position information of the object being inspected by the radiographic inspection apparatus; an information processing unit communicatively coupled to the information acquisition unit, which generates guidance information for the object based on the position information of the radiation dose detection unit and the position information of the object being inspected by the radiographic inspection apparatus; and an information presentation unit communicatively coupled to the information processing unit, which receives and presents the guidance information.

Description

Technical Field

[0001] The present invention relates to a guiding device for a radiographic inspection device, a radiographic inspection device and a method for using the same, and a computer-readable storage medium, and more particularly, to a mechanism for assisting medical activities based on position information of an inspected object and various components. Background Art

[0002] The application of medical imaging systems such as digital X-ray photography systems (hereinafter referred to as DR systems) is becoming more and more popular, and medical imaging systems have become an important tool for medical workers to make diagnoses. However, the complexity of medical imaging systems is also increasing, and their imaging quality is closely related to the positioning of the system and the patient. Therefore, the imaging quality of the system depends to a large extent on the quality of the system operator.

[0003] In order to enable the medical imaging system to obtain satisfactory imaging quality, the operators of the medical imaging system need to receive professional training. In addition, the operators need to practice for a long time to master the operating specifications of the medical imaging system. However, even if the operating specifications are mastered, the operators still need to maintain a high degree of concentration when performing medical examinations. However, long-term clinical work will inevitably cause fatigue errors in the operators. In some cases, even if the operator completes the correct positioning, when the operator leaves the patient for the next operation, the patient may move unexpectedly, resulting in positioning errors. At this time, because the operator is far away from the patient, this error is often not discovered in time. Taking the DR system as an example, the operator often improperly positions the patient, which may cause the system to set inappropriate exposure parameters, and the image quality obtained is likely to be too poor to meet the diagnostic requirements.

[0004] Conventional solutions in this field usually use text, pictures or videos to help operators improve the accuracy of operations. Summary of the invention

[0005] The present invention aims to provide a mechanism that can assist medical activities through guidance information to reduce the workload of medical examiners, specifically:

[0006] According to one aspect of the present invention, there is provided a guidance device for a radiographic inspection device, the radiographic inspection device comprising a radiation dose detection unit for detecting the radiation dose received by the radiographic inspection device, the guidance device comprising: an information acquisition unit configured to respectively acquire position information of the radiation dose detection unit and position information of an object inspected by the radiographic inspection device; an information processing unit communicatively coupled to the information acquisition unit for generating guidance information for the object based on the position information of the radiation dose detection unit and the position information of the object inspected by the radiographic inspection device; and an information presentation unit communicatively coupled to the information processing unit for receiving and presenting the guidance information.

[0007] In one embodiment of the present invention, optionally, the information acquisition unit is used to acquire an image; the position information of the radiation dose detection unit is the position of the radiation dose detection unit in the image, and the position information of the object is the position of the object in the image.

[0008] In one embodiment of the present invention, optionally, the information acquisition unit determines the position of the radiation dose detection unit in the image according to feature points of the radiation dose detection unit.

[0009] In one embodiment of the present invention, optionally, the information acquisition unit determines the position of the radiation dose detection unit in the image through object recognition.

[0010] In one embodiment of the present invention, optionally, the guiding device includes a mark fixedly positioned relative to the radiation dose detection unit, and the information acquisition unit determines the position of the radiation dose detection unit in the image according to the position of the mark in the image.

[0011] In one embodiment of the present invention, optionally, if the object covers the radiation dose detection unit in the image, the guidance information generated by the information processing unit indicates that the positioning of the object is correct.

[0012] In one embodiment of the present invention, optionally, the information acquisition unit is used to acquire a depth image; the position information of the radiation dose detection unit is the position of the radiation dose detection unit in the depth image, and the position information of the object is the position of the object in the depth image.

[0013] In one embodiment of the present invention, optionally, the guiding device includes a mark fixedly positioned relative to the radiation dose detection unit, and the information acquisition unit determines the position of the radiation dose detection unit in the depth image according to the position of the mark in the depth image.

[0014] In one embodiment of the present invention, optionally, the information acquisition unit determines the position of the radiation dose detection unit in the image according to feature points of the radiation dose detection unit.

[0015] In one embodiment of the present invention, optionally, the information acquisition unit determines the position of the radiation dose detection unit in the image through object recognition.

[0016] In one embodiment of the present invention, optionally, if the object covers the radiation dose detection unit in the depth image, the guidance information generated by the information processing unit indicates that the positioning of the object is correct.

[0017] In one embodiment of the present invention, optionally, the information acquisition unit further determines the thickness of the object based on the depth image, and when the thickness of the object is within a preset range, the information processing unit determines that the object covers the radiation dose detection unit.

[0018] In one embodiment of the present invention, optionally, the guidance information includes at least one of visual information, auditory information and tactile information.

[0019] In one embodiment of the present invention, optionally, the information processing unit includes a software module and a hardware module that work together.

[0020] According to another aspect of the present invention, there is provided a radiographic inspection device, comprising any one of the guiding devices described above.

[0021] In one embodiment of the present invention, optionally, the radiation inspection device controls the radiation dose emitted by the emission source in the radiation inspection device according to the radiation dose detected by the radiation dose detection unit.

[0022] According to another aspect of the present invention, there is provided a method for performing radiation inspection using any one of the guidance devices as described above or any one of the radiation inspection devices as described above, characterized in that the method comprises the following steps: positioning the information acquisition unit relative to the radiation dose detection unit so that the detection range of the information acquisition unit covers the radiation dose detection unit; acquiring the position information of the radiation dose detection unit and the position information of the object inspected by the radiation inspection device using the information acquisition unit; sending the position information of the radiation dose detection unit and the position information of the object inspected by the radiation inspection device to the information processing unit for processing to generate the guidance information; and presenting the guidance information using the information presentation unit.

[0023] In one embodiment of the present invention, optionally, the information acquisition unit is used to acquire an image; the position information of the radiation dose detection unit is the position of the radiation dose detection unit in the image, and the position information of the object is the position of the object in the image.

[0024] In one embodiment of the present invention, optionally, the information acquisition unit is used to acquire a depth image; the position information of the radiation dose detection unit is the position of the radiation dose detection unit in the depth image, and the position information of the object is the position of the object in the depth image.

[0025] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein instructions are stored in the computer-readable storage medium, and wherein when the instructions are executed by a processor, the processor is caused to execute any one of the methods described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other objects and advantages of the present invention will become more fully apparent from the following detailed description taken in conjunction with the accompanying drawings, wherein the same or similar elements are denoted by the same reference numerals.

[0027] Figure 1 A schematic diagram of a radiation inspection device according to an embodiment of the present invention is shown.

[0028] Figure 2 A schematic diagram of a guiding device for a radiographic inspection device according to an embodiment of the present invention is shown.

[0029] Figure 3 A schematic diagram of a guiding device for a radiographic inspection device according to an embodiment of the present invention is shown.

[0030] Figure 4 A schematic diagram of a guiding device for a radiographic inspection device according to an embodiment of the present invention is shown.

[0031] Figure 5 A schematic diagram of a guiding device for a radiographic inspection device according to an embodiment of the present invention is shown.

[0032] Figure 6 A schematic diagram of a guiding device for a radiographic inspection device according to an embodiment of the present invention is shown.

[0033] Figure 7 A schematic diagram of a guiding device for a radiographic inspection device according to an embodiment of the present invention is shown.

[0034] Figure 8 A schematic diagram of a radiation inspection device according to an embodiment of the present invention is shown.

[0035] Fig. 9 A schematic diagram of guiding according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0036] For the purpose of brevity and illustration, the principles of the present invention are described herein mainly with reference to its exemplary embodiments. However, those skilled in the art will readily recognize that the same principles are equally applicable to all types of guide devices for radiographic inspection devices, radiographic inspection devices and methods of use thereof, and computer-readable storage media, and that these same or similar principles may be implemented therein, and any such changes do not depart from the true spirit and scope of the present patent application.

[0037] Figure 1 The schematic diagram of a radiographic inspection device according to an embodiment of the present invention is shown. As shown in the figure, the radiographic inspection device 10 includes an adjustable radiation source 12, a film box 16 (on which there are marks such as a silk screen 162 of an automatic exposure ionization chamber), an automatic exposure ionization chamber (not shown), a detector 164, and an automatic exposure controller 18. In addition, for the purpose of clearly presenting the basic principles of the present invention, some unit modules (for example, amplifiers, comparators, etc.) are omitted. The ray beam 122 emitted by the adjustable ray source 12 penetrates the object 14 to be inspected by the radiographic inspection device 10, and the detector 164 is used to detect the ray beam 122 that penetrates the object 14 and is further used for medical imaging. Different intensities of the ray beam 122 emitted by the adjustable ray source 12 will cause differences in the imaging quality of the detector 164. In order to make the intensity of the ray beam 122 emitted by the adjustable ray source 12 appropriate, an automatic exposure control mechanism is introduced in the art. During the automatic exposure control process, the beam 122 emitted by the adjustable radiation source 12 will be captured by the automatic exposure ionization chamber. The automatic exposure ionization chamber will generate different amounts of charges when ionized by the beam 122 of different intensities. The charges are captured by the automatic exposure controller 18 to control the intensity of the beam 122 emitted by the adjustable radiation source 12, so as to achieve a better imaging effect. The automatic exposure ionization chamber is approximately located at Figure 1 The rear side of the ionization chamber silk screen 162 shown in the figure, the ionization chamber silk screen 162 is used to indicate the approximate position of the automatic exposure ionization chamber. It should be noted that the number of automatic exposure ionization chambers in various embodiments of the present invention is not limited to the number shown in the figure.

[0038] Although Figure 1 A standing type radiographic inspection apparatus is shown in the figure by way of example, but the basic principle of the present invention is also applicable to various types of radiographic inspection apparatuses such as a horizontal type radiographic inspection apparatus.

[0039] Figure 2FIG. 1 is a schematic diagram of a guiding device for a radiographic inspection device according to an embodiment of the present invention. As shown in the figure, the radiographic inspection device includes a radiation dose detection unit 26 (for example, a radiation dose detection unit 26) for detecting the radiation dose received by the device. Figure 1 The figure shows an automatic exposure ionization chamber in the figure) and a column 22 along which a radiation dose detection unit 26 can be adjusted up and down, and the remaining components that are common to other embodiments are omitted in the figure.

[0040] In one embodiment of the present invention, the guiding device 20 may include an information acquisition unit 282, an information processing unit 286, and an information presentation unit 288; in another embodiment of the present invention, the guiding device 20 may include an information acquisition unit 284, an information processing unit 286, and an information presentation unit 288; in other embodiments of the present invention, the number of information acquisition units 282, 288 is not limited to the number shown in the figure. Figure 2 The information acquisition unit 282 (such as a color image collector) and the information acquisition unit 288 (such as a depth image collector) are shown as optional forms of visual capture units. If the principle of the present invention can be implemented, the present invention may also adopt other forms of information acquisition units. For example, if feasible, an infrared capture unit, an acoustic wave capture unit, a laser distance capture unit, etc. may be used as the information acquisition unit, and the present invention is not limited thereto.

[0041] In one embodiment of the present invention, the guidance device 20 includes an information acquisition unit 282, an information processing unit 286, and an information presentation unit 288. The information acquisition unit 282 is configured to acquire the position information of the radiation dose detection unit 26 and the position information of the object 24 examined by the radiation inspection device. The object 24 examined described in the present invention can be a patient under examination, or local body tissue of the patient under examination when feasible. The information processing unit 286 is communicatively coupled to the information acquisition unit 282, and generates guidance information for the object 24 according to the position information of the radiation dose detection unit 26 and the position information of the object 24 examined by the radiation inspection device. The information presentation unit 288 is communicatively coupled to the information processing unit 286 to receive and present the guidance information.

[0042] The present invention does not limit the type and quantity of the information acquisition unit 282, and it is based on the ability to determine the position information of the radiation dose detection unit 26 and the position information of the object 24 inspected by the radiation inspection device. The information processing unit 286 in the present invention can generate guidance information based on the position information of each object of interest to facilitate the inspection of the object 24 and / or the medical inspector, for example, to guide the object 24 to an appropriate position. The communication coupling shown in the drawings of the present invention does not limit the coupling method, and can be a wireless method or a wired method, or other types of communication coupling, based on the ability to achieve communication between the coupled objects.

[0043] In some embodiments, the guidance information may be any one or any combination of visual information, auditory information and tactile information. Accordingly, the information presentation unit 288 may be a display device, a sound playback device, a vibration device, etc. capable of presenting visual information, auditory information and tactile information.

[0044] In one embodiment of the present invention, the information acquisition unit 282 may be arranged, for example, facing the radiation dose detection unit 26 (or in other arrangements) to acquire an image, the position information of the radiation dose detection unit 26 is the position of the radiation dose detection unit 26 in the image, and the position information of the object 24 is the position of the object 24 in the image. The image may be an RGB color image, a grayscale image, an infrared image, etc., as long as the image information of the radiation dose detection unit 26 and the image information of the object 24 can be determined in the form of light sensing. The information acquisition unit 282 may include multiple image acquisition units, so the information acquisition unit 282 may acquire more than one image, and the information acquisition unit 282 may also capture more than one image at different angles within a short time interval. The position information of the radiation dose detection unit 26 and the position information of the object 24 may be the position in the same image or in different images. If the radiation dose detection unit 26 and the object 24 are located in different images, the information processing unit 286 may, for example, calculate the relative position relationship between the radiation dose detection unit 26 and the object 24 based on the relative position relationship between the acquired images, and then generate corresponding guidance information. The information processing unit 286 can, for example, infer the relative position relationship between the acquired images based on the overlapping parts between the images. On the other hand, since the relative positions of multiple image acquisition units are initially fixed, the relative positions between the acquired images can also be inferred based on this.

[0045] In some embodiments of the present invention, the information acquisition unit 282 is arranged facing the radiation dose detection unit 26, which is mainly to enable the image acquired by the information acquisition unit 282 to reflect the transmission relationship between the radiation and the object 24 and the radiation dose detection unit 26, so as to reflect whether the radiation passes through the object 24 and is then captured by the radiation dose detection unit 26. In some embodiments, the information acquisition unit 282 is required to be as close to the adjustable radiation source 12 as possible in position to reflect the penetration angle of the radiation as much as possible; in other embodiments, the information acquisition unit 282 does not need to be close to the adjustable radiation source 12, as long as the penetration angle of the radiation can be reflected or calculated.

[0046] Furthermore, in some embodiments, guidance information can be generated based on the relative position or absolute position of the radiation dose detection unit 26 and the object 24 in the image. For example, the information acquisition unit 282 can determine the position of the radiation dose detection unit 26 in the image based on the feature points of the radiation dose detection unit 26. In addition, the information acquisition unit 282 can also determine the position of the radiation dose detection unit 26 in the image by object recognition. For example, the radiation dose detection unit 26 and the object 24 can be separated from the image by various image processing methods such as object recognition (for example, by Figure 1 The radiation dose detection unit 26 is separated by the silk screen 162 mentioned in the figure), and then the positions of the radiation dose detection unit 26 and the object 24 are determined according to the positions of the pixels corresponding to the radiation dose detection unit 26 and the object 24 in the image. For example, the positions of the radiation dose detection unit 26 and the object 24 can be determined by the characteristic points (representative pixels) in the radiation dose detection unit 26 and the object 24 (these characteristic points can be inherent in them or added thereto for measurement needs), and the positions of the radiation dose detection unit 26 and the object 24 can also be determined by the contours of the radiation dose detection unit 26 and the object 24, and the present invention is not limited thereto. In some embodiments, for example, the position of the radiation dose detection unit 26 can be determined according to the silk screen mark.

[0047] See also Figure 3(The content of the attached figure may be a scene including guidance information presented in the guidance device 30, the same below). In one embodiment of the present invention, in order to facilitate the determination of the position of the radiation dose detection unit 26, the guidance device 30 may include a mark 322 fixedly positioned relative to the radiation dose detection unit 26, and the information acquisition unit 282 determines the position of the radiation dose detection unit 26 in the image according to the position of the mark in the image. The figure shows two marks 322 in the form of two-dimensional codes, but the present invention does not limit the form and number of the marks 322, and the position of the radiation dose detection unit 26 can be determined in a visually captureable manner. When or before the radiation dose received by the radiation inspection device is detected, the mark 322 is fixed relative to the radiation dose detection unit 26, and the position of the radiation dose detection unit 26 can be determined according to the previously determined relative position relationship between the mark 322 and the radiation dose detection unit 26. The relative position relationship can be, for example, pre-stored in the information processing unit 286 of the guidance device 30.

[0048] See also Figure 3 , the radiographic inspection device may include multiple radiation dose detection units. In some embodiments, only a portion of the radiation dose detection units may be enabled. For example, the information processing unit 286 may directly input which radiation dose detection units are enabled. For another example, the information processing unit 286 may also notify the host computer which detection units are effectively covered, and the host computer may determine whether the enabled detection units are covered. For another example, the information processing unit 286 may determine whether it is a radiation dose detection unit that should be enabled based on the coverage rate of the radiation dose detection unit by the inspected object (for example, if a dose detection unit is covered by the inspected object for more than 80% of its area, it is considered that the dose detection unit should be enabled), and notify the host computer to enable the detection unit. As shown in the figure, the radiation dose detection unit 32 corresponding to the silk screen shown in black blocks (only for the convenience of explanation, in fact, the silk screen there is consistent with the silk screen elsewhere in form) is enabled, and at this time, the information acquisition unit 282 only needs to obtain the position of the radiation dose detection unit 32 and the object 24. When multiple radiation dose detection units are enabled, the position of one of the radiation dose detection units can be determined based on the mark 322, and then the positions of each enabled radiation dose detection unit can be determined based on the positional relationship between the radiation dose detection units.

[0049] In one embodiment of the present invention, Figure 4 As shown, in order to make the intensity of the radiation passing through the object 34 appropriate, the intensity of the radiation is controlled by automatic exposure control, and thus the object 34 is firstly guided to a position covering the radiation dose detection unit 32 . Figure 4A kind of guidance information 36 is shown in the figure, which shows an arrow guiding the object 34 to the correct position, and the guidance information 36 can be presented to the object 34 and / or the medical examiner. Although the guidance information 36 is shown in a visual manner in this embodiment, the guidance information can also be presented in other perceptible ways, and the present invention is not limited thereto.

[0050] In one embodiment of the present invention, if the object 24 covers the radiation dose detection unit 26 in the image, the guidance information generated by the information processing unit 286 indicates that the positioning of the object 24 is correct. The "coverage" referred to in various embodiments of the present invention is from the perspective of the radiation beam, that is, the radiation beam must first pass through the former before reaching the latter. Figure 5 An example is shown in which the object 34 covered by the radiation dose detection unit 32 is shown. At this time, the guidance information generated by the information processing unit 286 of the guidance device 30 indicates that the positioning of the object 34 is correct, and the information presentation unit 288 presents the guidance information 36 indicating that the positioning of the object 34 is correct as shown in the figure. The object 34 and / or the medical examiner can know that the object 34 has been guided to the correct position through the guidance information 36 such as the word "OK" shown in the figure.

[0051] Figure 6 , a guide device 60 for a radiographic inspection device is shown, the radiographic inspection device includes another radiation dose detection unit 62 and its silk-screen mark as shown in the figure, and the black block marks the enabled radiation dose detection unit 62. In order to facilitate the determination of the position of the radiation dose detection unit 62, the guide device 60 may include a mark fixedly positioned relative to the radiation dose detection unit 26, and two marks in the form of two-dimensional codes are shown in the figure. The marks are fixed relative to the radiation dose detection unit 62, but the marks are not integrated into, for example, the film box, but are arranged at other positions.

[0052] See also Figure 6 , where three radiation dose detection units 62 are enabled, which are respectively shown as black blocks of silk screen (only for the convenience of explanation, in fact, the silk screen here is consistent with the silk screen elsewhere in form). In the case where multiple radiation dose detection units 62 are enabled, the position of one of the radiation dose detection units 62 can be determined according to the mark, and then the positions of each enabled radiation dose detection unit 62 can be determined according to the positional relationship between the radiation dose detection units 62. In order to make the intensity of the radiation passing through the object 64 appropriate, the intensity of the radiation should be controlled by automatic exposure control, so the object 64 should first be guided to a position covering the above three radiation dose detection units 62. Figure 6A guidance information 68 is shown in FIG. 6 , which shows a voice broadcast information for guiding the subject 64 to the correct position (for example, please move 10 cm to the right). The guidance information 64 can be presented to the subject 34 and / or the medical examiner.

[0053] In one embodiment of the present invention, the information processing unit 286 may include software modules and hardware modules that work together. For example, the hardware module may be a general-purpose computing device of the x86 architecture, and the software module may include a Windows operating system and various applications built thereon, and a part of the application may perform the various operations described above.

[0054] return Figure 2 In one embodiment of the present invention, the guidance device 20 may include an information acquisition unit 284, an information processing unit 286, and an information presentation unit 288. Except for the differences emphasized below, the guidance device 20 using the information acquisition unit 284 may be configured with reference to the guidance device 20 using the information acquisition unit 282. Similar to the above embodiment, the information acquisition unit 284 is configured to acquire the position information of the radiation dose detection unit 26 and the position information of the object 24 inspected by the radiation inspection device. The information processing unit 286 is communicatively coupled to the information acquisition unit 284, and generates guidance information for the object 24 based on the position information of the radiation dose detection unit 26 and the position information of the object 24 inspected by the radiation inspection device. The information presentation unit 288 is communicatively coupled to the information processing unit 286 to receive and present the guidance information.

[0055] The information acquisition unit 284 may be a depth sensor or a depth camera such as shown in the figure, which may be used to determine the position information of the radiation dose detection unit 26 and the position information of the object 24 inspected by the radiation inspection device. The information processing unit 286 in the present invention may generate guidance information based on the position information of each object of interest to facilitate the inspection of the object 24 and / or the medical inspector, for example, to guide the object 24 to an appropriate position. The communication coupling in the present invention does not limit the coupling method, and may be a wireless method or a wired method, etc., subject to the ability to achieve communication between the coupled objects.

[0056] In some embodiments of the present invention, the information acquisition unit 284 may be arranged, for example, facing the radiation dose detection unit 26 (or in other arrangements) to acquire a depth image, the position information of the radiation dose detection unit 26 is the position of the radiation dose detection unit in the depth image, and the position information of the object 24 is the position of the object in the depth image. Since the depth image is used, the position information of the object of interest can actually be determined from a three-dimensional space, so the positional relationship between the objects of interest can be more accurately reflected in space. Similarly, the information acquisition unit 284 may include multiple image acquisition units, so the information acquisition unit 284 may acquire more than one image, and the information acquisition unit 284 may also capture more than one image at different angles within a short time interval. The position information of the radiation dose detection unit 26 and the position information of the object 24 may be the position in the same image or in different images. If the radiation dose detection unit 26 and the object 24 are located in different images, the information processing unit 286 may, for example, calculate the relative positional relationship between the radiation dose detection unit 26 and the object 24 based on the relative positional relationship between the acquired images, and then generate corresponding guidance information. The information processing unit 286 can, for example, infer the relative position relationship between the acquired images based on the overlapping parts between the images. On the other hand, since the relative positions of the multiple image acquisition units are initially fixed, the relative positions between the acquired images can also be inferred based on this. In addition, the relative position relationship between the images can also be inferred based on the relevant feature points in the space recorded in each image (the relative positions between these feature points are initially fixed).

[0057] In some embodiments of the present invention, the information acquisition unit 284 is arranged facing the radiation dose detection unit 26, mainly so that the image acquired by the information acquisition unit 284 can reflect the transmission relationship between the radiation and the object 24 and the radiation dose detection unit 26, so as to reflect whether the radiation passes through the object 24 and is then captured by the radiation dose detection unit 26. The specific arrangement form can refer to the information acquisition unit 282 described above. Compared with the information acquisition unit 282 described above, since the information acquisition unit 284 is used to obtain three-dimensional information, its arrangement position is more flexible.

[0058] Furthermore, in some embodiments, guidance information can be generated based on the relative position or absolute position of the radiation dose detection unit 26 and the object 24 in the image. For example, the information acquisition unit 284 can determine the position of the radiation dose detection unit 26 in the image based on the feature points of the radiation dose detection unit 26. In addition, the information acquisition unit 284 can also determine its position in the image through object recognition. For example, the radiation dose detection unit 26 and the object 24 can be separated from the image through various image processing methods such as object recognition (for example, by Figure 1The radiation dose detection unit 26 is separated by the silk screen 162 mentioned in the figure), and then the positions of the radiation dose detection unit 26 and the object 24 are determined according to the positions of the pixels corresponding to the radiation dose detection unit 26 and the object 24 in the image. For example, the positions of the radiation dose detection unit 26 and the object 24 can be determined by the characteristic points (representative pixels) in the radiation dose detection unit 26 and the object 24 (these characteristic points can be inherent in them or added thereto for measurement needs), and the positions of the radiation dose detection unit 26 and the object 24 can also be determined by the contours of the radiation dose detection unit 26 and the object 24, and the present invention is not limited thereto. In some embodiments, for example, the position of the radiation dose detection unit 26 can be determined according to the silk screen mark.

[0059] In one embodiment of the present invention, the guiding device includes a marker fixedly positioned relative to the radiation dose detection unit, and the information acquisition unit determines the position of the radiation dose detection unit in the depth image according to the position of the marker in the depth image. The fixedly positioned marker can be Figure 3-6 Arrange in the manner shown.

[0060] In one embodiment of the present invention, if the object covers the radiation dose detection unit in the depth image, the guidance information generated by the information processing unit indicates that the positioning of the object is correct. Figure 7 In order to further determine whether the object 24 is a human body, the thickness 72 of the object needs to be considered, that is, the thickness in the direction of radiation penetration (for example, the thickness at the thinnest part can be considered). The information acquisition unit further determines the thickness 72 of the object based on the depth image, and only when the thickness 72 of the object is within a preset range will the information processing unit make a judgment that the object covers the radiation dose detection unit. If the preset range is not met, the information processing unit may not make a judgment, so that the interference of irrelevant objects on the guidance process can be eliminated.

[0061] Figure 8A schematic diagram of a radiographic inspection device according to an embodiment of the present invention is shown, which may include any of the guiding devices described above. In one embodiment of the present invention, as shown in the figure, the radiographic inspection device 80 may include an adjustable radiation source 12, a film box 16 (on which a mark such as a silk screen of a radiation dose detection unit is provided), a radiation dose detection unit (for example, an automatic exposure ionization chamber), a detector 164, an automatic exposure controller 18, an information acquisition unit 282 and / or an information acquisition unit 284, an information processing unit 286, an information presentation unit 288, and a mark 322 fixedly positioned relative to the radiation dose detection unit, wherein each component may perform the operations described above and realize the functions described above. In addition, for the purpose of clearly presenting the basic principles of the present invention, some unit modules (for example, amplifiers, comparators, etc.) are omitted. The radiation beam 122 emitted by the adjustable radiation source 12 penetrates the object to be inspected by the radiographic inspection device 80, and the detector 164 is used to detect the radiation beam 122 that penetrates the object and is further used for medical imaging. In one embodiment of the present invention, the radiation inspection device 80 can control the radiation dose emitted by the radiation inspection device 80 (specifically, its radiation source, or emission source) according to the radiation dose detected by the radiation dose detection unit.

[0062] Fig. 9 A schematic diagram of guiding according to an embodiment of the present invention is shown, and the method can be adapted to any one of the guiding devices or ray inspection devices described above. In one embodiment of the present invention, as shown in the figure, the method includes the following steps: First, in step S902, the information acquisition unit is positioned relative to the radiation dose detection unit so that the detection range of the information acquisition unit covers the radiation dose detection unit. Subsequently, in step S904, the position information of the radiation dose detection unit and the position information of the object inspected by the radiation inspection device are acquired by the information acquisition unit. Secondly, in step S906, the position information of the radiation dose detection unit and the position information of the object inspected by the radiation inspection device are sent to the information processing unit for processing to generate guidance information. Finally, the guidance information is presented by the information presentation unit (step S908). In one embodiment of the present invention, more specifically, an image is acquired by the information acquisition unit, and the position information of the radiation dose detection unit is the position of the radiation dose detection unit in the image, and the position information of the object is the position of the object in the image. In another embodiment of the present invention, the information acquisition unit acquires a depth image, and the position information of the radiation dose detection unit is the position of the radiation dose detection unit in the depth image, and the position information of the object is the position of the object in the depth image.

[0063] The present application also provides a computer-readable storage medium, in which instructions are stored. When the instructions are executed by a processor, the processor executes any one of the methods described above.

[0064] In view of the above, the guiding device, the radiographic inspection device and the method of using the same, and the computer-readable storage medium proposed in the present invention can effectively guide the medical process and avoid poor inspection results due to incorrect positioning of the object under inspection. It should be noted that some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0065] The above examples mainly illustrate the guiding device for a radiographic inspection device, the radiographic inspection device and the method of using the same, and a computer-readable storage medium of the present invention. Although only some of the embodiments of the present invention are described, it should be understood by those skilled in the art that the present invention can be implemented in many other forms without departing from its subject matter and scope. Therefore, the examples and embodiments shown are considered to be illustrative rather than restrictive, and the present invention may cover various modifications and substitutions without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A guiding device for a radiographic inspection device, the radiographic inspection device comprising a plurality of radiation dose detection units for detecting the radiation dose received by the device, characterized in that: The radiation inspection device is configured to enable a portion of the radiation dose detection units covered by the object among the plurality of radiation dose detection units, and the guiding device comprises: an information acquisition unit configured to respectively acquire position information of the enabled portion of the radiation dose detection unit and position information of the object inspected by the radiation inspection device; an information processing unit communicatively coupled to the information acquisition unit, and generating guidance information for the object based on the position information of the radiation dose detection units of the enabled parts and the positional relationship between the radiation dose detection units of the enabled parts and the position information of the object inspected by the radiation inspection device; and The information presenting unit is communicatively coupled to the information processing unit, receives the guidance information and presents it.

2. The guiding device according to claim 1, characterized in that: The information acquisition unit is used to acquire an image; and The position information of the radiation dose detection unit is the position of the radiation dose detection unit in the image, and the position information of the object is the position of the object in the image.

3. The guiding device according to claim 2, characterized in that: The guiding device includes a mark fixedly positioned relative to the radiation dose detection unit, and the information acquisition unit determines the position of the radiation dose detection unit in the image according to the position of the mark in the image.

4. The guiding device according to claim 2, characterized in that: The information acquisition unit determines a position of the radiation dose detection unit in the image according to a feature point of the radiation dose detection unit.

5. The guiding device according to claim 2, characterized in that: The information acquisition unit determines the position of the radiation dose detection unit in the image through object recognition.

6. The guiding device according to claim 3, characterized in that: If the object covers the radiation dose detection unit in the image, the guidance information generated by the information processing unit indicates that the positioning of the object is correct.

7. The guiding device according to claim 1, characterized in that: The information acquisition unit is used to acquire a depth image; and The position information of the radiation dose detection unit is the position of the radiation dose detection unit in the depth image, and the position information of the object is the position of the object in the depth image.

8. The guiding device according to claim 7, characterized in that: The guiding device includes a mark fixedly positioned relative to the radiation dose detection unit, and the information acquisition unit determines the position of the radiation dose detection unit in the depth image according to the position of the mark in the depth image.

9. The guiding device according to claim 7, characterized in that: The information acquisition unit determines a position of the radiation dose detection unit in the image according to a feature point of the radiation dose detection unit.

10. The guiding device according to claim 7, characterized in that: The information acquisition unit determines the position of the radiation dose detection unit in the image through object recognition.

11. The guiding device according to claim 8, characterized in that: If the object covers the radiation dose detection unit in the depth image, the guidance information generated by the information processing unit indicates that the positioning of the object is correct.

12. The guiding device according to claim 11, characterized in that: The information acquisition unit further determines the thickness of the object according to the depth image, and when the thickness of the object is within a preset range, the information processing unit determines that the object covers the radiation dose detection unit.

13. The guiding device according to claim 1, characterized in that The guidance information includes at least one of visual information, auditory information, and tactile information.

14. The guiding device according to claim 1, characterized in that The information processing unit includes a software module and a hardware module that work together.

15. A radiographic inspection device, comprising the guiding device according to any one of claims 1 to 14.

16. The radiographic inspection device according to claim 15, characterized in that: The radiation inspection device controls the radiation dose emitted by the emission source in the radiation inspection device according to the radiation dose detected by the radiation dose detection unit.

17. A method for performing radiographic inspection using the guiding device according to any one of claims 1 to 14 or the radiographic inspection device according to any one of claims 15 to 16, characterized in that: The method comprises the following steps: Positioning the information acquisition unit relative to the radiation dose detection unit so that the detection range of the information acquisition unit covers the radiation dose detection unit; Using the information acquisition unit to acquire the position information of the radiation dose detection unit and the position information of the object inspected by the radiation inspection device; sending the position information of the radiation dose detection unit and the position information of the object inspected by the radiation inspection device to the information processing unit for processing to generate the guidance information; as well as The guidance information is presented using the information presenting unit.

18. The method according to claim 17, characterized in that: Acquiring an image using the information acquisition unit; The position information of the radiation dose detection unit is the position of the radiation dose detection unit in the image, and the position information of the object is the position of the object in the image.

19. The method according to claim 17, characterized in that: Acquire a depth image using the information acquisition unit; The position information of the radiation dose detection unit is the position of the radiation dose detection unit in the depth image, and the position information of the object is the position of the object in the depth image.

20. A computer-readable storage medium, wherein instructions are stored in the computer-readable storage medium, characterized in that: When the instructions are executed by a processor, the processor is caused to perform the method according to any one of claims 17 to 19.

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