CN113081006B - A guiding device, a radiographic inspection device, a method of using the same, and a computer-readable storage medium - Google Patents
A guiding device, a radiographic inspection device, a method of using the same, and a computer-readable storage medium Download PDFInfo
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- 238000007689 inspection Methods 0.000 title claims abstract description 61
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- 230000010365 information processing Effects 0.000 claims abstract description 42
- 239000003550 marker Substances 0.000 claims description 16
- 230000000007 visual effect Effects 0.000 claims description 5
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- 238000002059 diagnostic imaging Methods 0.000 description 8
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
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Abstract
本发明涉及一种用于射线检查装置的导引装置，射线检查装置包括用于检测其接收到的射线剂量的射线剂量检测单元，导引装置包括：信息获取单元，其配置成分别获取射线剂量检测单元的位置信息以及射线检查装置所检查的对象的位置信息；信息处理单元，其通信地耦合到信息获取单元，根据射线剂量检测单元的位置信息以及射线检查装置所检查的对象的位置信息生成针对对象的导引信息；以及信息呈现单元，其通信地耦合到信息处理单元，接收导引信息并呈现。
The present invention relates to a guidance device for a radiographic inspection device, wherein the radiographic inspection device comprises a radiation dose detection unit for detecting the radiation dose received by the radiographic inspection device, and the guidance device comprises: 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 and generating guidance information for the object according to 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 and receiving and presenting the guidance information.
Description
Technical Field
The present invention relates to a guiding device for a radiographic inspection device, and a method of using the same, and a computer-readable storage medium, and more particularly, to a mechanism for assisting medical activities based on positional information of a subject and respective components.
Background
The use of medical imaging systems, such as digital radiography systems (hereinafter simply DR systems), has become increasingly popular, and medical imaging systems have become an important tool for diagnosis by medical workers. However, the complexity of medical imaging systems is also increasing, the imaging quality of which is closely related to the positioning of the system and the patient, and thus the imaging quality of the system is largely dependent on the quality of the system operator.
In order for a medical imaging system to achieve satisfactory imaging quality, operators of the medical imaging system need to be trained in specialized practice, and in addition, the operators need to perform a great deal of practical operations for a long time to grasp the operating specifications of the medical imaging system. However, even if the operation specifications are grasped, the operator needs to keep the spirit highly concentrated when performing the medical examination. However, long clinical work will inevitably lead to fatigue errors in the operator. In some cases, even if the operator has completed the correct positioning, the patient may be subject to unintended movement resulting in a positioning error when the operator leaves the patient for the next operation. At this time, the operator is far away from the patient, and such errors cannot be found in time. Taking DR systems as an example, improper positioning of the patient from time to time by the operator may result in the system setting improper exposure parameters, and thus the quality of the obtained image is likely to be too poor to meet diagnostic requirements.
Text, pictures or video is commonly used in conventional schemes in the art to assist operators in improving the accuracy of the operation.
Disclosure of Invention
The present invention aims to provide a mechanism capable of assisting medical activities by guiding information to alleviate the workload of medical inspectors, in particular:
According to an aspect of the present invention, there is provided a guiding device for a radiation inspection device including a radiation dose detection unit for detecting a radiation dose received by the radiation inspection device, the guiding device including an information acquisition unit configured to acquire positional information of the radiation dose detection unit and positional information of an object inspected by the radiation inspection device, respectively, an information processing unit communicatively coupled to the information acquisition unit, generating guiding information for the object based on the positional information of the radiation dose detection unit and the positional information of the object inspected by the radiation inspection device, and an information presentation unit communicatively coupled to the information processing unit, receiving the guiding information and presenting.
In one embodiment of the invention, optionally, the information acquisition unit is configured to acquire an image, the position information of the radiation dose detection unit is a position of the radiation dose detection unit in the image, and the position information of the object is a position of the object in the image.
In one embodiment of the invention, optionally, the information acquisition unit determines the position of the radiation dose detection unit in the image from feature points of the radiation dose detection unit.
In one embodiment of the invention, optionally, the information acquisition unit determines the position of the radiation dose detection unit in the image by object recognition.
In one embodiment of the invention, optionally, the guiding means comprises a marker fixedly positioned relative to the radiation dose detection unit, the information acquisition unit determining the position of the radiation dose detection unit in the image from the position of the marker in the image.
In an embodiment of the invention, optionally, if the object covers the radiation dose detection unit in the image, the guiding information generated by the information processing unit indicates that the positioning of the object is correct.
In one embodiment of the present invention, optionally, the information acquisition unit is configured to acquire a depth image, the position information of the radiation dose detection unit is a position of the radiation dose detection unit in the depth image, and the position information of the object is a position of the object in the depth image.
In one embodiment of the invention, optionally, the guiding means comprises a marker fixedly positioned relative to the radiation dose detection unit, the information acquisition unit determining the position of the radiation dose detection unit in the depth image from the position of the marker in the depth image.
In one embodiment of the invention, optionally, the information acquisition unit determines the position of the radiation dose detection unit in the image from feature points of the radiation dose detection unit.
In one embodiment of the invention, optionally, the information acquisition unit determines the position of the radiation dose detection unit in the image by object recognition.
In an embodiment of the invention, optionally, if the object covers the radiation dose detection unit in the depth image, the guiding information generated by the information processing unit indicates that the positioning of the object is correct.
In one embodiment of the present invention, optionally, the information acquisition unit further determines a thickness of the object from the depth image, and the information processing unit determines that the object covers the radiation dose detection unit when the thickness of the object is within a preset range.
In one embodiment of the invention, optionally, the guidance information includes at least one of visual information, auditory information, and tactile information.
In one embodiment of the invention, optionally, the information processing unit comprises a software module and a hardware module working in concert.
According to another aspect of the present invention there is provided a radiographic inspection device comprising any one of the guide devices described above.
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.
According to another aspect of the present invention there is provided a method of performing a radiation inspection using any one of the guiding devices as described above or any one of the radiation inspection devices as described above, characterized in that the method comprises the steps of positioning the information acquisition unit relative to the radiation dose detection unit such that the detection range of the information acquisition unit covers the radiation dose detection unit, acquiring position information of the radiation dose detection unit and position information of an object inspected by the radiation inspection device with the information acquisition unit, transmitting 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 guiding information, and presenting the guiding information with the information presenting unit.
In one embodiment of the invention, optionally, an image is acquired with the information acquisition unit, the position information of the radiation dose detection unit is a position of the radiation dose detection unit in the image, and the position information of the object is a position of the object in the image.
In one embodiment of the invention, optionally, a depth image is acquired by the information acquisition unit, the position information of the radiation dose detection unit is a position of the radiation dose detection unit in the depth image, and the position information of the object is a position of the object in the depth image.
According to another aspect of the present invention there is provided a computer readable storage medium having instructions stored therein, which when executed by a processor, cause the processor to perform any of the methods as described above.
Drawings
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, in which identical or similar elements are designated by the same reference numerals.
Fig. 1 shows a schematic diagram of a radiographic inspection device according to one embodiment of the invention.
Fig. 2 shows a schematic view of a guiding device for a radiographic inspection device according to one embodiment of the invention.
Fig. 3 shows a schematic view of a guiding device for a radiographic inspection device according to one embodiment of the invention.
Fig. 4 shows a schematic view of a guiding device for a radiographic inspection device according to one embodiment of the invention.
Fig. 5 shows a schematic view of a guiding device for a radiographic inspection device according to one embodiment of the invention.
Fig. 6 shows a schematic view of a guiding device for a radiographic inspection device according to one embodiment of the invention.
Fig. 7 shows a schematic view of a guiding device for a radiographic inspection device according to one embodiment of the invention.
Fig. 8 shows a schematic diagram of a radiographic inspection device according to one embodiment of the invention.
Fig. 9 shows a schematic diagram of guidance according to an embodiment of the invention.
Detailed Description
For the purposes of brevity and explanation, the principles of the present invention are described herein primarily with reference to exemplary embodiments thereof. 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, computer readable storage media, and that these same or similar principles may be implemented therein, any such variations without departing from the true spirit and scope of the present patent application.
Fig. 1 shows a schematic diagram of a radiographic inspection device according to one embodiment of the invention. As shown, the radiation inspection device 10 includes an adjustable radiation source 12, a cassette 16 (on which is provided a screen 162 or the like marking an auto-exposure ionization chamber), an auto-exposure ionization chamber (not shown), a detector 164, an auto-exposure controller 18, and, in addition, some of the unit blocks (e.g., amplifiers, comparators, etc.) are omitted for the purpose of clearly presenting the basic principles of the present invention. The radiation beam 122 emitted by the adjustable radiation source 12 penetrates the object 14 to be examined by the radiation examination apparatus 10 and the detector 164 is used for detecting the radiation beam 122 penetrating the object 14 and further for medical imaging. The difference in the intensity of the radiation beam 122 emitted by the adjustable radiation source 12 causes a difference in the imaging quality of the detector 164. In order to make the intensity of the radiation beam 122 emitted by the adjustable radiation source 12 appropriate, an automatic exposure control mechanism is introduced in the art. In the process of automatic exposure control, the ray beam 122 emitted by the adjustable ray source 12 is captured by the automatic exposure ionization chamber, and the automatic exposure ionization chamber is ionized by the ray beams 122 with different intensities to generate different amounts of charges, wherein the charges are captured by the automatic exposure controller 18 and used for controlling the intensity of the ray beam 122 emitted by the adjustable ray source 12, so that a better imaging effect can be achieved. The auto exposure ionization chamber is located approximately at the rear side of the ionization chamber screen 162 shown in fig. 1, the ionization chamber screen 162 being used to illustrate the approximate location of the auto exposure ionization chamber. It is noted that the number of auto-exposure ionization chambers of the various embodiments of the present invention is not limited to the number shown in the figures.
Although a standing-type radiographic inspection device is shown by way of example in fig. 1, the basic principles of the present invention are also applicable to various types of radiographic inspection devices, such as a horizontal-type radiographic inspection device.
Fig. 2 shows a schematic view of a guiding device for a radiographic inspection device according to one embodiment of the invention. As illustrated, the radiation inspection device includes a radiation dose detection unit 26 (which may be, for example, an automatic exposure ionization chamber in fig. 1) for detecting a radiation dose received by the radiation inspection device, and a column 22 along which the radiation dose detection unit 26 is adjustable up and down, the remaining components that may be common to other embodiments being omitted from the figures.
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, and in other embodiments of the present invention, the number of information acquisition units 282, 288 is not limited by the number shown in the figures. Although information acquisition unit 282 (such as a color image collector) and information acquisition unit 288 (such as a depth image collector) are shown in fig. 2 in alternative forms of visual capture units, the present invention may also employ other forms of information acquisition units where the principles of the present invention may be implemented. For example, an infrared capturing unit, an acoustic capturing unit, a laser distance capturing unit, or the like may be employed as the information acquiring unit, where applicable, and the present invention is not limited thereto.
In one embodiment of the present invention, the guidance apparatus 20 includes an information acquisition unit 282, an information processing unit 286, and an information presentation unit 288. Wherein the information acquisition unit 282 is configured to acquire position information of the radiation dose detection unit 26 and position information of the object 24 inspected by the radiation inspection device. The object 24 under examination described in the present invention may be a patient under test or, where applicable, also a local body tissue of the patient under test. The information processing unit 286 is communicatively coupled to the information acquisition unit 282 and generates guidance information for the subject 24 based on the position information of the radiation dose detection unit 26 and the position information of the subject 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.
The present invention is not limited to the kind and number of the information acquisition units 282, as long as it can 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 of the present invention may generate guidance information based on the location information of each object of interest to facilitate detection of the subject 24 and/or medical inspector, for example, guiding the subject 24 to an appropriate location. The communication coupling shown in the drawings of the present invention is not limited to a coupling manner, and may be a wireless manner, a wired manner, or other types of communication coupling, so long as communication between coupled objects can be achieved.
In some embodiments, the guidance information may be any one or any combination of visual information, audible information, and tactile information, and accordingly, the information presentation unit 288 may be a display device, a playback device, a vibration device, and the like, having the functions of presenting visual information, audible information, and tactile information.
In an embodiment of the invention, the information acquisition unit 282 may be arranged, for example, facing the radiation dose detection unit 26 (other arrangements are also possible) for acquiring an image, the position information of the radiation dose detection unit 26 being the position of the radiation dose detection unit 26 in the image and the position information of the object 24 being the position of the object 24 in the image. The image may be an RGB color image, a gray scale image, an infrared image, etc., in order to enable the image information of the radiation dose detection unit 26 and the image information of the object 24 to be determined in a light-sensing manner. The information acquisition unit 282 may include a plurality of image acquisition units, and thus the information acquisition unit 282 may acquire more than one image, and the information acquisition unit 282 may capture more than one image at different angles in a short time interval. The position information of the radiation dose detecting unit 26 and the position information of the object 24 may be the same position in one image or may be different positions in different images. If the radiation dose detecting unit 26 and the object 24 are located in different images, the information processing unit 286 may calculate the relative positional relationship between the radiation dose detecting unit 26 and the object 24, for example, according to the relative positional relationship between the acquired images, so as to generate corresponding guidance information. The information processing unit 286 may be, for example, estimated from the relative positional relationship between the acquired images from the overlapping portions between the images, and on the other hand, since the relative positions of the plurality of image capturing units are initially fixed, the relative positions between the acquired images may also be estimated therefrom.
In some embodiments of the present invention, the information acquisition unit 282 is arranged facing the radiation dose detection unit 26, which is mainly such that the image acquired by the information acquisition unit 282 can reflect the transmission relation of the exit line with the object 24, the radiation dose detection unit 26, so as to reflect whether the exit line passes through the object 24 and is captured by the radiation dose detection unit 26. In some embodiments, the information acquisition unit 282 is required to be substantially as close in position to the adjustable radiation source 12 as possible to reflect the angle of penetration of the radiation as possible, and in other embodiments, the information acquisition unit 282 is not required to be close to the adjustable radiation source 12 as long as the angle of penetration of the exit line can be reflected or inferred.
Further, in some embodiments, the guidance information may be generated based on the relative or absolute position of the radiation dose detection unit 26 and the object 24 in the image. For example, the information acquisition unit 282 may determine its position in the image from the feature points of the radiation dose detection unit 26. In addition, the information acquisition unit 282 may also determine its position in the image by object recognition. For example, the radiation dose detection unit 26 and the object 24 may be separated from the image by various image processing means such as object recognition (e.g., the radiation dose detection unit 26 is separated by the silk screen 162 mentioned in fig. 1), and the positions of the radiation dose detection unit 26 and the object 24 are determined based on the positions of pixels in the image corresponding to the radiation dose detection unit 26 and the object 24. For example, the position of the radiation dose detection unit 26 and the object 24 may be determined by feature points (representative pixels) in the radiation dose detection unit 26 and the object 24, which feature points may be inherent or added to for measurement purposes, and the position of the radiation dose detection unit 26 and the object 24 may be determined by the contours of the radiation dose detection unit and the object, without limitation of the invention. In some embodiments, the position of the radiation dose detection unit 26 may be determined, for example, from a silk-screened marking thereof.
Referring to fig. 3 (which may be a view of the guiding means 30 as presented below including guiding information), in one embodiment of the present invention, in order to facilitate determining the position of the radiation dose detecting unit 26, the guiding means 30 may comprise a marker 322 fixedly positioned relative to the radiation dose detecting unit 26, the information obtaining unit 282 determining the position of the radiation dose detecting unit 26 in the image based on the position of the marker in the image. Two markers 322 in the form of two-dimensional codes are shown, but the invention is not limited to the form and number of markers 322, as it can facilitate the determination of the position of the radiation dose detection unit 26 in a visually capturable manner. The marker 322 is fixed relative to the radiation dose detection unit 26 at or before the radiation dose received by the radiation examination device is detected, the position of the radiation dose detection unit 26 can be determined from the originally determined relative positional relationship of the marker 322 and the radiation dose detection unit 26, which can be stored in advance, for example, in the information processing unit 286 of the guiding device 30.
With further reference to fig. 3, the radiation examination apparatus may comprise a plurality of radiation dose detection units. In some embodiments, only a portion of the radiation dose detection units may be enabled. For example, which radiation dose detection units are enabled may be directly input to the information processing unit 286. 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 a radiation dose detection unit should be enabled, for example, based on the coverage of the radiation dose detection unit by the subject (e.g., consider a dose detection unit to be enabled if it is covered by the subject by more than 80% of its area), and notify the host computer to enable the detection unit. As illustrated, the radiation dose detecting unit 32 corresponding to the screen printing shown in black (only for illustration convenience, the screen printing at this place is in fact morphologically identical to the screen printing elsewhere) is enabled, and at this time, the information acquiring unit 282 only needs to acquire the positions of the radiation dose detecting unit 32 and the subject 24. In the case where a plurality of radiation dose detection units are enabled, the position of one of the radiation dose detection units may be determined based on the markers 322, and the position of each of the radiation dose detection units that are enabled may be determined based on the positional relationship between the radiation dose detection units.
In one embodiment of the present invention, as shown in FIG. 4, in order to make the intensity of radiation passing through the object 34 appropriate, the intensity of the radiation is controlled using automatic exposure control, and thus the object 34 is first directed to a position overlying the radiation dose detection unit 32. In fig. 4 is shown a guidance information 36 showing an arrow guiding the object 34 to the correct position, which guidance information 36 may be presented to the object under test 34 and/or the medical examination personnel. While this embodiment visually illustrates the guidance information 36, the guidance information may be presented in other perceptible manners, as the invention is not limited in this regard.
In one embodiment of the invention, if the subject 24 is overlaid with 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 subject 24 is correct. The term "coverage" in the various embodiments of the present invention is from the beam perspective, i.e., it is necessary for the beam to pass through the former first to reach the latter. Fig. 5 shows an example of the measured 34 covering the radiation dose detection unit 32, where the guiding information generated by the information processing unit 286 of the guiding means 30 indicates that the positioning of the object 34 is correct, and the information presenting unit 288 presents the guiding information 36 indicating that the positioning of the object 34 is correct as shown. The subject 34 and/or medical inspector can learn that the subject 34 has been guided to the correct position through guide information 36 such as the "OK" word shown in the figure.
In fig. 6a guiding device 60 for a radiation examination apparatus is shown, comprising another radiation dose detection unit 62 as shown and its silk-screened marking, black blocks marking the active radiation dose detection unit 62. To facilitate the determination of the position of the radiation dose detection unit 62, the guiding means 60 may comprise a marker fixedly positioned relative to the radiation dose detection unit 26, two markers in the form of two-dimensional codes being shown, which are fixed relative to the radiation dose detection unit 62, but which are not integrated in, for example, a cassette, but are arranged elsewhere.
With further reference to fig. 6, wherein 3 radiation dose detection units 62 are enabled, each of which is shown as a screen (illustrated for ease of illustration only, where in practice the screen is morphologically consistent with the screen elsewhere), the position of one of the radiation dose detection units 62 may be determined from the indicia, and the position of each of the radiation dose detection units 62 that is enabled may be determined from the positional relationship between the radiation dose detection units 62, with a plurality of radiation dose detection units 62 being enabled. In order to make the intensity of the radiation passing through the object 64 appropriate, the intensity of the radiation is controlled by automatic exposure control, and thus the object 64 is first directed to a position covering the above-mentioned 3 radiation dose detecting units 62. In fig. 6, a guidance message 68 is shown that illustrates a voice broadcast message (e.g., please move 10 cm to the right) that guides the subject 64 to the correct location, and the guidance message 64 may be presented to the subject 34 and/or the medical inspector.
In one embodiment of the invention, the information processing unit 286 may include a software module and a hardware module that work cooperatively. For example, the hardware module may be a general purpose computing device of the x86 architecture, the software module may include a Windows operating system and various applications built thereon, some of which may perform the various operations described above.
Returning to fig. 2, in one 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. The guide 20 employing the information acquisition unit 284 may be configured with reference to the guide 20 employing the information acquisition unit 282, except for the differences highlighted below. Similar to the above embodiment, the information acquisition unit 284 is configured to acquire positional information of the radiation dose detection unit 26 and positional 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 subject 24 based on the position information of the radiation dose detection unit 26 and the position information of the subject 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.
The information acquisition unit 284 may be, for example, a depth sensor or a depth camera as illustrated, which may be used to determine position information of the radiation dose detection unit 26 and of the object 24 being examined by the radiation examination apparatus. The information processing unit 286 of the present invention may generate guidance information based on the location information of each object of interest to facilitate detection of the subject 24 and/or medical inspector, for example, guiding the subject 24 to an appropriate location. The communication coupling in the present invention is not limited to the coupling method, and may be a wireless method, a wired method, or the like, provided that communication between the coupled objects can be achieved.
In some embodiments of the invention, the information acquisition unit 284 may be arranged, for example, facing the radiation dose detection unit 26 (other arrangements are also possible) for acquiring a depth image, the position information of the radiation dose detection unit 26 being the position of the radiation dose detection unit in the depth image, and the position information of the object 24 being the position of the object in the depth image. Since the depth image is employed, the positional information of the objects of interest can be determined from the three-dimensional space in practice, and thus the positional relationship between the objects of interest can be reflected more accurately in space. Also, the information acquisition unit 284 may include a plurality of image acquisition units, and thus the information acquisition unit 284 may acquire more than one image, and the information acquisition unit 284 may capture more than one image at different angles in a short time interval. The position information of the radiation dose detecting unit 26 and the position information of the object 24 may be the same position in one image or may be different positions in different images. If the radiation dose detecting unit 26 and the object 24 are located in different images, the information processing unit 286 may calculate the relative positional relationship between the radiation dose detecting unit 26 and the object 24, for example, according to the relative positional relationship between the acquired images, so as to generate corresponding guidance information. The information processing unit 286 may be, for example, estimated from the relative positional relationship between the acquired images from the overlapping portions between the images, and on the other hand, since the relative positions of the plurality of image capturing units are initially fixed, the relative positions between the acquired images may also be estimated therefrom. Further, the relative positional relationship between the images may also be estimated from the relevant feature points in the space recorded in the respective images (the relative positions between these feature points are initially fixed).
In some embodiments of the present invention, the information acquisition unit 284 is arranged facing the radiation dose detection unit 26, mainly such that the image acquired by the information acquisition unit 284 is reflective of the transmission relation of the exit line to the object 24 and the radiation dose detection unit 26, so as to reflect whether the exit line passes through the object 24 and is captured by the radiation dose detection unit 26. For a specific arrangement, reference is made to the information acquisition unit 282 described above. Since the information acquisition unit 284 is used to acquire stereoscopic information, its arrangement position is more free than the information acquisition unit 282 described above.
Further, in some embodiments, the guidance information may be generated based on the relative or absolute position of the radiation dose detection unit 26 and the object 24 in the image. For example, the information acquisition unit 284 may determine its position in the image from the feature points of the radiation dose detection unit 26. In addition, the information acquisition unit 284 may also determine its position in the image by object recognition. For example, the radiation dose detection unit 26 and the object 24 may be separated from the image by various image processing means such as object recognition (e.g., the radiation dose detection unit 26 is separated by the silk screen 162 mentioned in fig. 1), and the positions of the radiation dose detection unit 26 and the object 24 are determined based on the positions of pixels in the image corresponding to the radiation dose detection unit 26 and the object 24. For example, the position of the radiation dose detection unit 26 and the object 24 may be determined by feature points (representative pixels) in the radiation dose detection unit 26 and the object 24, which feature points may be inherent or added to for measurement purposes, and the position of the radiation dose detection unit 26 and the object 24 may be determined by the contours of the radiation dose detection unit and the object, without limitation of the invention. In some embodiments, the position of the radiation dose detection unit 26 may be determined, for example, from a silk-screened marking thereof.
In one embodiment of the invention, the guiding means comprises a marker fixedly positioned relative to the radiation dose detection unit, the information acquisition unit determining the position of the radiation dose detection unit in the depth image from the position of the marker in the depth image. The fixedly positioned markers may be arranged in the manner shown in fig. 3-6.
In one embodiment of the invention, if the object covers the radiation dose detection unit in the depth image, the guiding information generated by the information processing unit indicates that the positioning of the object is correct. In one embodiment of the present invention, referring to fig. 7, in order to further determine whether the subject 24 is a human body, it is also necessary to consider the thickness 72 of the subject, that is, the thickness in the direction of radiation penetration (for example, the thickness at the thinnest point may be considered). The information acquisition unit further determines the thickness 72 of the object from the depth image, and when the thickness 72 of the object is within a preset range, the information processing unit may make a judgment of the object covering radiation dose detection unit, and if the preset range is not satisfied, the information processing unit may not make a judgment, in this way, interference of an incoherent object on the guiding process may be eliminated.
Fig. 8 shows a schematic view of a radiographic inspection device according to one embodiment of the invention, which may comprise any of the guiding devices described above. In one embodiment of the invention, as shown, the radiation inspection device 80 may include an adjustable radiation source 12, a cassette 16 (a silk screen or the like marking with a radiation dose detection unit disposed thereon), a radiation dose detection unit (e.g., an auto-exposure ionization chamber), a detector 164, an auto-exposure controller 18, an information acquisition unit 282 and/or 284, an information processing unit 286, an information presentation unit 288, and a marker 322 fixedly positioned relative to the radiation dose detection unit, wherein the various components may perform operations as described above, performing functions as described above. In addition, for the purpose of clearly presenting the basic principle of the present invention, part of the unit modules (e.g., amplifiers, comparators, etc.) are omitted. The radiation beam 122 emitted by the adjustable radiation source 12 penetrates an object to be examined by the radiation examination apparatus 80 and the detector 164 is used for detecting the radiation beam 122 penetrating the object and further for medical imaging. In one embodiment of the invention, the radiation detection device 80 may control the radiation dose emitted by the radiation detection device 80 (in particular its radiation source, or referred to as emission source) in dependence of the radiation dose detected by the radiation dose detection unit.
Fig. 9 shows a schematic view of guiding according to an embodiment of the invention, which method can be adapted to any of the guiding devices or radiographic examination devices described above. In one embodiment of the invention, as shown, the method comprises the steps of first positioning the information acquisition unit relative to the radiation dose detection unit such that the detection range of the information acquisition unit covers the radiation dose detection unit in step S902. Subsequently, in step S904, position information of the radiation dose detecting unit and position information of the object inspected by the radiation inspection device are acquired by the information acquiring unit. Next, in step S906, the position information of the radiation dose detecting unit and the position information of the object inspected by the radiation inspection device are transmitted to the information processing unit to be processed to generate guide information. Finally, the guidance information is presented by the information presenting unit (step S908). In one embodiment of the invention, more specifically, the image is acquired with 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 depth image is acquired with the information acquisition unit, and the position information of the radiation dose detection unit is a position of the radiation dose detection unit in the depth image, and the position information of the object is a position of the object in the depth image.
The application also provides a computer readable storage medium having instructions stored therein which, when executed by a processor, cause the processor to perform any of the methods described above.
In view of the above, the guiding device, the radiographic inspection device, the using method thereof and the computer readable storage medium provided by the invention can effectively guide the medical process, and avoid poor inspection effect caused by incorrect positioning of the inspected object. It should be noted that some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor devices and/or microcontroller devices.
The above examples mainly illustrate the guiding device for a radiation inspection device, the radiation inspection device and the method of using the same of the present invention, and a computer readable storage medium. Although only a few embodiments of the present invention have been described, those skilled in the art will appreciate that the present invention can be embodied in many other forms without departing from the spirit or scope thereof. Accordingly, the present examples and embodiments are to be considered as illustrative and not restrictive, and the invention is intended to cover various modifications and substitutions without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (20)
1. A guiding device for a radiation inspection device, the radiation inspection device comprising a plurality of radiation dose detection units for detecting radiation doses received by the radiation inspection device, the radiation inspection device being configured to activate a portion of the radiation dose detection units of the plurality of radiation dose detection units that are covered by an object, the guiding device comprising:
An information acquisition unit configured to acquire position information of a radiation dose detection unit of the activated portion and position information of an object inspected by the radiation inspection device, respectively;
An information processing unit communicatively coupled to the information acquisition unit, generating guidance information for an object inspected by the radiation inspection device based on positional information of the radiation dose detection units of the activated portions and positional relationship between the radiation dose detection units of the activated portions and the positional information of the object, and
An information presentation unit, communicatively coupled to the information processing unit, receives the guidance information and presents it.
2. The guide device according to claim 1, wherein:
The information acquisition unit is used for acquiring an image, and
The position information of the radiation dose detection unit is a position of the radiation dose detection unit in the image, and the position information of the object is a position of the object in the image.
3. The guide device according to claim 2, wherein:
The guiding means comprise a marker fixedly positioned relative to the radiation dose detection unit, the information acquisition unit determining the position of the radiation dose detection unit in the image from the position of the marker in the image.
4. The guidance device of claim 2, wherein the information acquisition unit determines the position of the radiation dose detection unit in the image based on feature points of the radiation dose detection unit.
5. The guiding device according to claim 2, wherein the information acquisition unit determines the position of the radiation dose detection unit in the image by object recognition.
6. A guide device according to claim 3, characterized in that:
If the object covers the radiation dose detection unit in the image, the guiding information generated by the information processing unit indicates that the positioning of the object is correct.
7. The guide device according to claim 1, wherein:
The information acquisition unit is used for acquiring depth image and
The position information of the radiation dose detection unit is a position of the radiation dose detection unit in the depth image, and the position information of the object is a position of the object in the depth image.
8. The guide device according to claim 7, wherein:
The guiding means comprises a marker fixedly positioned relative to the radiation dose detection unit, the information acquisition unit determining the position of the radiation dose detection unit in the depth image from the position of the marker in the depth image.
9. The guidance device of claim 7, wherein the information acquisition unit determines the position of the radiation dose detection unit in the image based on feature points of the radiation dose detection unit.
10. The guiding device according to claim 7, wherein the information acquisition unit determines the position of the radiation dose detection unit in the image by object recognition.
11. The guide device according to claim 8, wherein:
if the object covers the radiation dose detection unit in the depth image, the guiding information generated by the information processing unit indicates that the positioning of the object is correct.
12. The guide device according to claim 11, wherein:
The information acquisition unit further determines a thickness of the object from the depth image, and the information processing unit determines that the object covers the radiation dose detection unit when the thickness of the object is within a preset range.
13. The guidance device of claim 1, wherein the guidance information comprises at least one of visual information, audible information, and tactile information.
14. The guidance device of claim 1, wherein the information processing unit includes cooperating software modules and hardware modules.
15. A radiographic inspection device comprising a guide device as claimed in any one of claims 1 to 14.
16. The radiation detecting apparatus according to claim 15, wherein the radiation detecting apparatus controls a radiation dose emitted from an emission source in the radiation detecting apparatus based on the radiation dose detected by the radiation dose detecting unit.
17. A method of performing a radiographic inspection using the guiding device of any one of claims 1-14 or the radiographic inspection device of any one of claims 15-16, the method comprising the steps of:
positioning the information acquisition unit relative to the radiation dose detection unit such that a detection range of the information acquisition unit covers the radiation dose detection unit;
Acquiring position information of the radiation dose detection unit and position information of an object inspected by the radiation inspection device by using the information acquisition unit;
Transmitting 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 guiding information, and
And presenting the guiding information by using the information presenting unit.
18. The method according to claim 17, wherein:
Acquiring an image by using the information acquisition unit;
The position information of the radiation dose detection unit is a position of the radiation dose detection unit in the image, and the position information of the object is a position of the object in the image.
19. The method according to claim 17, wherein:
Acquiring a depth image by using the information acquisition unit;
the position information of the radiation dose detection unit is a position of the radiation dose detection unit in the depth image, and the position information of the object is a position of the object in the depth image.
20. A computer readable storage medium having instructions stored therein, which when executed by a processor, cause the processor to perform the method of any of claims 17-19.
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| JP5914404B2 (en) * | 2012-04-12 | 2016-05-11 | 富士フイルム株式会社 | X-ray exposure control device, X-ray image detection device, and X-ray imaging system |
| TWI535421B (en) * | 2014-05-14 | 2016-06-01 | Automatic identification and adjustment of the selected parts of the medical equipment | |
| US9833210B2 (en) * | 2015-07-27 | 2017-12-05 | Toshiba Medical Systems Corporation | Medical image diagnostic apparatus |
| CN107495978B (en) * | 2017-09-20 | 2021-01-12 | 上海联影医疗科技股份有限公司 | X-ray photography system and image acquisition method |
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| CN109938758A (en) * | 2017-12-20 | 2019-06-28 | 西门子医疗有限公司 | Method and apparatus for ensuring correct positioning for radiographic recordings |
| CN110338831A (en) * | 2019-08-14 | 2019-10-18 | 晓智科技（成都）有限公司 | A method of each component physical alignment in adjustment X-ray imaging system |
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