CN113081006A - Guiding device, ray inspection device, using method of ray inspection device and computer-readable storage medium - Google Patents
Guiding device, ray inspection device, using method of ray inspection device and computer-readable storage medium Download PDFInfo
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- 230000010365 information processing Effects 0.000 claims abstract description 42
- 239000003550 marker Substances 0.000 claims description 12
- 230000000007 visual effect Effects 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 238000002059 diagnostic imaging Methods 0.000 description 8
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Abstract
The invention relates to a guiding device for a radiation examination device, the radiation examination device comprising a radiation dose detection unit for detecting a radiation dose received by the radiation examination device, the guiding device comprising: an information acquisition unit configured to acquire position information of the radiation dose detection unit and position information of an object inspected by the radiation inspection apparatus, respectively; an information processing unit, communicatively coupled to the information acquisition unit, 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 radiation inspection apparatus; and an information presentation unit, communicatively coupled to the information processing unit, that receives the guidance information and presents it.
Description
Technical Field
The present invention relates to a guiding apparatus for a radiographic inspection apparatus, a radiographic inspection apparatus 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 positional information of an object under inspection and each component.
Background
The use of medical imaging systems, such as digital radiography systems (hereinafter referred to simply as DR systems), has become increasingly 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 the imaging quality is strongly related to the positioning of the system and the patient, and thus the imaging quality of the system is highly dependent on the quality of the system operator.
In order to obtain satisfactory imaging quality of the medical imaging system, the operator of the medical imaging system needs to receive professional training, and in addition, the operator needs to practice a lot of operations for a long time to grasp the operation specifications of the medical imaging system. However, even with the practice of the procedure, the operator needs to maintain a high level of mental focus while performing the medical examination. However, long-term clinical work will cause fatigue errors to the operator, which is inevitable. In some cases, even if the operator has completed the correct positioning, the patient may move unexpectedly when the operator leaves the patient for further operations, resulting in positioning errors. At this time, the operator is far away from the patient, and the error often cannot be found in time. Taking a DR system as an example, frequent improper positioning of the patient by the operator may result in improper setting of exposure parameters by the system, and thus the quality of the image obtained may be too poor to meet diagnostic requirements.
In the conventional scheme in the field, a text, a picture or a video mode is generally used to help an operator to improve the operation accuracy.
Disclosure of Invention
The present invention aims to provide a mechanism capable of assisting medical activities by guiding information to reduce the workload of medical examiners, specifically:
according to an aspect of the present invention, there is provided a guiding apparatus for a radiation inspection apparatus including a radiation dose detection unit for detecting a radiation dose received by the radiation inspection apparatus, the guiding apparatus including: an information acquisition unit configured to acquire position information of the radiation dose detection unit and position information of an object inspected by the radiation inspection apparatus, respectively; an information processing unit, communicatively coupled to the information acquisition unit, generating guidance information for an object examined by the radiation inspection apparatus according to the position information of the radiation dose detection unit and the position information of the object; and an information presentation unit, communicatively coupled to the information processing unit, that receives and presents the guidance information.
In an embodiment of the present invention, optionally, the information acquiring 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 an embodiment of the present invention, optionally, the information obtaining unit determines a position of the radiation dose detecting unit in the image according to a feature point of the radiation dose detecting unit.
In one embodiment of the present 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, the guiding device comprises a marker fixedly positioned with respect to the radiation dose detecting unit, and the information obtaining unit determines the position of the radiation dose detecting unit in the image according to the position of the marker in the image.
In an 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 object is located correctly.
In an embodiment of the present invention, optionally, the information obtaining unit is configured to obtain 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 an embodiment of the invention, optionally, the guiding device includes a marker fixedly positioned with respect to the radiation dose detecting unit, and the information obtaining unit determines the position of the radiation dose detecting unit in the depth image according to the position of the marker in the depth image.
In an embodiment of the present invention, optionally, the information obtaining unit determines a position of the radiation dose detecting unit in the image according to a feature point of the radiation dose detecting unit.
In one embodiment of the present 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 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 object is located correctly.
In an embodiment of the present invention, optionally, the information obtaining unit further determines a 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 detecting unit.
In one embodiment of the present invention, optionally, the guidance information includes at least one of visual information, auditory information, and tactile information.
In one embodiment of the present invention, optionally, the information processing unit includes a software module and a hardware module working together.
According to another aspect of the present invention there is provided a radiographic inspection device comprising any one of the guide arrangements as described above.
In an embodiment of the present invention, optionally, the radiation inspection apparatus controls the radiation dose emitted by the emission source in the radiation inspection apparatus 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 radiographic inspection using any one of the guide devices described above or any one of the radiographic inspection devices described above, the method comprising the steps of: 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, by the information acquisition unit, position information of the radiation dose detection unit and position information of an object inspected by the radiation inspection apparatus; transmitting the position information of the radiation dose detection unit and the position information of the object inspected by the radiation inspection apparatus to the information processing unit for processing to generate the guidance information; and presenting the guidance information by using the information presentation unit.
In one embodiment of the present invention, optionally, an 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 image, and the position information of the object is a position of the object in the image.
In an embodiment of the present 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, wherein the instructions, when executed by a processor, cause the processor to perform any one of the methods as described above.
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The above and other objects and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which like or similar elements are designated by like reference numerals.
Fig. 1 shows a schematic view of a radiographic inspection apparatus according to an embodiment of the invention.
Fig. 2 shows a schematic illustration of a guide device for a radiographic inspection device according to an embodiment of the invention.
Fig. 3 shows a schematic illustration of a guide device for a radiographic inspection device according to an embodiment of the invention.
Fig. 4 shows a schematic illustration of a guide device for a radiographic inspection device according to an embodiment of the invention.
Fig. 5 shows a schematic illustration of a guide device for a radiographic inspection device according to an embodiment of the invention.
Fig. 6 shows a schematic illustration of a guide device for a radiographic inspection device according to an embodiment of the invention.
Fig. 7 shows a schematic illustration of a guide device for a radiographic inspection device according to an embodiment of the invention.
Fig. 8 shows a schematic view of a radiographic inspection apparatus according to an embodiment of the invention.
Fig. 9 shows a schematic diagram of steering 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 with reference primarily to exemplary embodiments thereof. However, those skilled in the art will readily appreciate that the same principles are equally applicable to all types of guide devices for radiation inspection apparatus, radiation inspection apparatus and methods of use thereof, computer readable storage media, and that these same or similar principles may be implemented therein, with any such variations not departing from the true spirit and scope of the present patent application.
Fig. 1 shows a schematic view of a radiographic inspection apparatus according to an embodiment of the invention. As shown, the radiation inspection apparatus 10 includes an adjustable radiation source 12, a cassette 16 (on which a silk screen 162 of an auto exposure ionization chamber or the like is provided), an auto exposure ionization chamber (not shown), a detector 164, an auto exposure controller 18, and further, a part of the unit modules (e.g., an amplifier, a comparator, etc.) are omitted for the purpose of clearly presenting the basic principle of the present invention. The radiation beam 122 from the adjustable radiation source 12 penetrates the object 14 to be examined by the radiation inspection device 10 and the detector 164 is used to detect the radiation beam 122 penetrating the object 14 and is further used for medical imaging. Differences in the intensity of the radiation beam 122 emitted by the adjustable radiation source 12 may cause differences 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, automatic exposure control mechanisms have been introduced in the art. In the process of automatic exposure control, the radiation beam 122 emitted from the adjustable radiation source 12 is captured by the automatic exposure ionization chamber, and the automatic exposure ionization chamber is ionized by the radiation beam 122 with different intensities to generate different amounts of charges, which are captured by the automatic exposure controller 18 for controlling the intensity of the radiation beam 122 emitted from the adjustable radiation source 12, so as to achieve better imaging effect. The auto-exposure ionization chamber is located approximately on the back side of the ionization chamber screen 162 shown in fig. 1, and the ionization chamber screen 162 is used to illustrate the approximate location of the auto-exposure ionization chamber. It is noted that the number of auto-exposure ionization chambers of various embodiments of the present invention is not limited by the number shown in the figures.
Although a standing type radiation inspection apparatus is shown in fig. 1 by way of example, the basic principle of the present invention is also applicable to various types of radiation inspection apparatuses such as a horizontal type radiation inspection apparatus.
Fig. 2 shows a schematic illustration of a guide device for a radiographic inspection device according to an embodiment of the invention. As illustrated, the radiation inspection apparatus 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 apparatus, and a column 22 along which the radiation dose detection unit 26 is adjustable up and down, and the remaining components, which are common to other embodiments, are omitted.
In one embodiment of the present invention, the guidance 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 obtaining unit 284, an information processing unit 286, and an information presenting unit 288; in other embodiments of the present invention, the number of information obtaining units 282, 288 is not limited to the number shown in the figures. Although 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 in fig. 2 in an alternative form of visual capture unit, the present invention may employ other forms of information acquisition units, as long as the principles of the present invention can be implemented. For example, an infrared capturing unit, an acoustic wave capturing unit, a laser distance capturing unit, or the like may be employed as the information acquiring unit where practicable, and the present invention is not limited thereto.
In one embodiment of the present invention, the navigation device 20 includes an information acquisition unit 282, an information processing unit 286, and an information presentation unit 288. Among them, the information acquisition unit 282 is configured to acquire the positional information of the radiation dose detection unit 26 and the positional information of the object 24 inspected by the radiation inspection apparatus. The subject 24 under examination described in the present invention may be a patient under test, or, where applicable, may be a local body tissue of a patient under test. The information processing unit 286 is communicatively coupled to the information acquisition unit 282, and generates guidance information for the object 24 from the positional information of the radiation dose detection unit 26 and the positional information of the object 24 examined by the radiation examination apparatus. 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 realize the determination of the positional information of the radiation dose detecting unit 26 and the positional information of the object 24 inspected by the radiation inspection apparatus. 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 test of the subject 24 and/or medical examiner, for example, to guide the subject 24 to an appropriate position. The communication coupling shown in the drawings of the present invention is not limited to a coupling method, and may be a wireless method, a wired method, or other types of communication coupling, so as to enable communication between coupled objects.
In some embodiments, the guidance information may be any one or any combination of visual information, auditory information, and tactile information, and accordingly, the information presentation unit 288 may be a display device, a sound reproduction device, a vibration device, and the like having the function of presenting visual information, auditory information, and tactile information.
In one embodiment of the present invention, the information acquisition unit 282 may be arranged facing the radiation dose detecting unit 26 (or may be in other arrangement forms) for acquiring an image, for example, the position information of the radiation dose detecting unit 26 is the position of the radiation dose detecting 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., in which it is possible to determine the image information of the radiation dose detecting unit 26 and the image information of the object 24 in the form of light sensing. 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 also take more than one image at different angles in a short time interval. The positional information of the radiation dose detecting unit 26 and the positional information of the object 24 may be positions in the same image or positions 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 calculate the relative position relationship between the radiation dose detection unit 26 and the object 24 according to the relative position relationship between the acquired images, for example, and further generate corresponding guidance information. The information processing unit 286 may, for example, estimate the relative position between the acquired images from the overlapping portion between the images based on the relative positional relationship between the acquired images, and on the other hand, estimate the relative position between the acquired images based on the relative positions of the plurality of image capturing units being initially fixed.
In some embodiments of the present invention, the information acquiring unit 282 is disposed facing the radiation dose detecting unit 26, which mainly makes the image acquired by the information acquiring unit 282 capable of reflecting the transmission relationship between the radiation and the object 24 and the radiation dose detecting unit 26, so as to reflect whether the emergent ray passes through the object 24 and is captured by the radiation dose detecting unit 26. In some embodiments, the information acquisition unit 282 is required to be substantially located as close as possible to the adjustable radiation source 12 to reflect the angle of penetration of the radiation as much as possible; in other embodiments, the non-information acquisition unit 282 may be located close to the adjustable radiation source 12, as long as the angle of penetration of the radiation is reflected or calculated.
Further, in some embodiments, the guidance information may be generated according to 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 detecting 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 detecting unit 26 is separated by the silk screen 162 mentioned in fig. 1), and the positions of the radiation dose detecting unit 26 and the object 24 are determined according to the positions of the pixels in the image corresponding to the radiation dose detecting unit 26 and the object 24. For example, the positions of the characteristic points (representative pixels) in the radiation dose detecting unit 26 and the object 24 (the characteristic points may be inherent to the characteristic points or may be added to the characteristic points for measurement), and the positions of the characteristic points may be determined by the contours of the radiation dose detecting unit 26 and the object 24, which is not limited herein. In some embodiments, the position of the radiation dose detection unit 26 may be determined, for example, from a silk-screen marking thereof.
Referring to fig. 3 (the content of the figure may show a scene including guiding information in the guiding device 30, the same applies hereinafter), in one embodiment of the present invention, in order to facilitate the determination of the position of the radiation dose detecting unit 26, the guiding device 30 may include a mark 322 fixedly positioned with respect to the radiation dose detecting unit 26, and the information obtaining unit 282 determines the position of the radiation dose detecting unit 26 in the image according to the position of the mark in the image. Two markers 322 in the form of two-dimensional codes are shown, but the present invention is not limited to the form and number of markers 322, as it can facilitate the determination of the location of the radiation dose detecting unit 26 in a visually capturable manner. The markers 322 are fixed with respect to the radiation dose detection unit 26 at or before the detection of the radiation dose received by the radiation examination apparatus, and the position of the radiation dose detection unit 26 can be determined from the previously determined relative positional relationship of the markers 322 and the radiation dose detection unit 26, which can be stored in advance in the information processing unit 286 of the guiding apparatus 30, for example.
With further reference to fig. 3, the radiation inspection apparatus may comprise a plurality of radiation dose detecting 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 upper computer which detection units are effectively covered, and the upper computer determines whether the enabled detection units are covered. For another example, the information processing unit 286 may determine whether a radiation dose detection unit is a radiation dose detection unit that should be activated or not (for example, if a certain dose detection unit is covered by an object over 80% of its area, the dose detection unit is considered to be activated) according to the coverage rate of the object to the radiation dose detection unit, and notify the upper computer to activate the dose detection unit. As illustrated, the radiation dose detecting unit 32 corresponding to the silk screen (shown in black for convenience of illustration only, where the silk screen is actually consistent with the silk screen elsewhere in shape) is activated, and at this time, the information acquiring unit 282 only needs to acquire the positions of the radiation dose detecting unit 32 and the object 24. In the case where a plurality of radiation dose detecting elements are activated, the position of one of the radiation dose detecting elements may be determined based on the marker 322, and then the positions of the activated radiation dose detecting elements may be determined based on the positional relationship between the radiation dose detecting elements.
In one embodiment of the invention, as shown in fig. 4, in order to make the intensity of the 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 guided to a position covering the radiation dose detecting unit 32. One type of guidance information 36 is shown in fig. 4, which shows arrows guiding the subject 34 to the correct position, which guidance information 36 may be presented to the subject 34 and/or medical examiner. Although this embodiment shows guidance information 36 in a visual manner, guidance information may be presented in other perceptible manners as well, and the invention is not limited thereto.
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 object 24 is positioned correctly. The term "covering" in the various embodiments of the present invention is from the perspective of the beam, i.e., it is necessary for the beam to first pass through the former before reaching the latter. Fig. 5 shows an example of the coverage of the radiation dose detecting unit 32 by the subject 34, in which case the guidance information generated by the information processing unit 286 of the guidance device 30 indicates that the subject 34 is correctly positioned, and the information presenting unit 288 presents the guidance information 36 indicating that the subject 34 is correctly positioned as shown. The subject 34 and/or medical examiner can know that the subject 34 has been guided to the correct position through guidance information 36 such as the word "OK" shown in the figure.
In fig. 6, a guide 60 for a radiographic inspection device is shown, which comprises a further radiation dose detection unit 62 as shown and its silk-screen marking, the black blocks marking the active radiation dose detection units 62. To facilitate the determination of the position of the radiation dose detecting unit 62, the guiding device 60 may comprise markers fixedly positioned relative to the radiation dose detecting unit 26, wherein two markers in the form of two-dimensional codes are shown, which markers are fixed relative to the radiation dose detecting unit 62, but which markers are not integrated into e.g. a cassette, but are arranged elsewhere.
Referring further to fig. 6, where 3 radiation dose detecting units 62 are activated, which are respectively shown by a silk-screen (which is illustrated for convenience of illustration only, and the silk-screen at this place is actually consistent with the silk-screen at other places in terms of shape), in the case that a plurality of radiation dose detecting units 62 are activated, the position of one of the radiation dose detecting units 62 may be determined according to the mark, and then the position of each of the activated radiation dose detecting units 62 may be determined according to the positional relationship between the radiation dose detecting units 62. 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 guided to a position covering the above-mentioned 3 radiation dose detecting units 62. A lead message 68 is shown in fig. 6, which shows a voice announcement message that leads the subject 64 to the correct position (e.g., please move 10 centimeters to the right), and the lead message 64 may be presented to the subject 34 and/or medical examiner.
In one embodiment of the invention, the information processing unit 286 may include cooperating software modules and hardware modules. For example, the hardware module may be a general purpose computing device of x86 architecture, the software module may include a Windows operating system and various applications built thereon, a portion 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 obtaining unit 284, an information processing unit 286, and an information presenting unit 288. The guide device 20 employing the information acquisition unit 284 may be configured with reference to the guide device 20 employing the information acquisition unit 282, except for differences highlighted below. Similar to the above embodiment, the information acquisition unit 284 is configured to acquire the positional information of the radiation dose detection unit 26 and the positional information of the object 24 inspected by the radiation inspection apparatus. The information processing unit 286 is communicatively coupled to the information acquisition unit 284, and generates guidance information for the object 24 from the position information of the radiation dose detection unit 26 and the position information of the object 24 examined by the radiation examination apparatus. 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 a depth sensor or a depth camera such as illustrated, which may be used to determine 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 processing unit 286 in the present invention may generate guidance information based on the position information of each object of interest to facilitate the test of the subject 24 and/or medical examiner, for example, to guide the subject 24 to an appropriate position. The communication coupling in the present invention is not limited to the coupling method, and may be a wireless method or a wired method, for example, so long as the communication between the coupled objects can be realized.
In some embodiments of the present invention, the information acquiring unit 284 may be arranged (or may be in other arrangements) facing the radiation dose detecting unit 26 for acquiring the depth image, for example, the position information of the radiation dose detecting unit 26 is the position of the radiation dose detecting 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 positional information of the object of interest can be actually determined from a three-dimensional space, and thus the positional relationship between the objects of interest can be reflected spatially more accurately. Likewise, the information acquisition unit 284 may include a plurality of image acquisition units, and thus the image acquired by the information acquisition unit 284 may be more than one, and the information acquisition unit 284 may also take more than one image at different angles in a shorter time interval. The positional information of the radiation dose detecting unit 26 and the positional information of the object 24 may be positions in the same image or positions 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 calculate the relative position relationship between the radiation dose detection unit 26 and the object 24 according to the relative position relationship between the acquired images, for example, and further generate corresponding guidance information. The information processing unit 286 may, for example, estimate the relative position between the acquired images from the overlapping portion between the images based on the relative positional relationship between the acquired images, and on the other hand, estimate the relative position between the acquired images based on the relative positions of the plurality of image capturing units being initially fixed. Further, it is also possible to estimate the relative positional relationship between the images 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 obtaining unit 284 is disposed facing the radiation dose detecting unit 26, mainly to enable the image obtained by the information obtaining unit 284 to reflect the transmission relationship between the radiation and the object 24 and the radiation dose detecting unit 26, so as to reflect whether the emergent ray passes through the object 24 and is captured by the radiation dose detecting unit 26. The specific arrangement thereof may refer to the information acquisition unit 282 described above. Compared to the information acquisition unit 282 described above, since the information acquisition unit 284 is used to acquire stereoscopic information, the arrangement position thereof is more free.
Further, in some embodiments, the guidance information may be generated according to 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 detecting 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 detecting unit 26 is separated by the silk screen 162 mentioned in fig. 1), and the positions of the radiation dose detecting unit 26 and the object 24 are determined according to the positions of the pixels in the image corresponding to the radiation dose detecting unit 26 and the object 24. For example, the positions of the characteristic points (representative pixels) in the radiation dose detecting unit 26 and the object 24 (the characteristic points may be inherent to the characteristic points or may be added to the characteristic points for measurement), and the positions of the characteristic points may be determined by the contours of the radiation dose detecting unit 26 and the object 24, which is not limited herein. In some embodiments, the position of the radiation dose detection unit 26 may be determined, for example, from a silk-screen marking thereof.
In an embodiment of the invention, the guiding device comprises a marker fixedly positioned with respect to the radiation dose detection unit, and the information acquisition unit determines the position of the radiation dose detection unit in the depth image based on the position of the marker in the depth image. The fixedly located markers may be arranged in the manner shown in fig. 3-6.
In one embodiment of the invention, the guidance information generated by the information processing unit indicates that the object is correctly positioned if the object covers the radiation dose detection unit in the depth image. In one embodiment of the present invention, referring to fig. 7, in order to further determine whether the subject 24 is a human body, the thickness 72 of the subject, i.e., the thickness in the radiation penetration direction (for example, the thickness at the thinnest point may be considered) is also considered. The information acquisition unit further determines the thickness 72 of the object from the depth image, and the information processing unit makes a determination that the object covers the radiation dose detection unit only when the thickness 72 of the object is within a preset range, and the information processing unit may not make a determination if the preset range is not satisfied, in such a way that interference of an irrelevant object with the guidance process can be excluded.
Fig. 8 shows a schematic view of a radiographic inspection device according to an embodiment of the invention, which may include any of the guiding devices described above. In one embodiment of the present invention, as shown, the radiation inspection apparatus 80 may include an adjustable radiation source 12, a cassette 16 (e.g., silk-screened or otherwise marked with a radiation dose detection unit), 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 an information acquisition unit 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 each of the components may perform the operations, implement the functions, and/or functions as described above. 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 from the adjustable radiation source 12 penetrates the object to be examined by the radiation inspection device 80 and the detector 164 is used for detecting the radiation beam 122 penetrating the object and is further used for medical imaging. In one embodiment of the present invention, the radiation inspection apparatus 80 can control the radiation dose emitted by the radiation inspection apparatus 80 (specifically, the radiation source thereof, or referred to as the emission source) according to the radiation dose detected by the radiation dose detection unit.
Fig. 9 shows a schematic view of a guiding according to an embodiment of the invention, which method may be adapted to any of the guiding devices or radiographic inspection devices as described above. In one embodiment of the present invention, as shown, the method comprises the steps of: first, in step S902, the information acquisition unit is positioned relative to the radiation dose detection unit such that the detection range of the information acquisition unit covers the radiation dose detection unit. Subsequently, in step S904, the positional information of the radiation dose detecting unit and the positional information of the object inspected by the radiation inspection apparatus are acquired by the information acquiring unit. Next, the positional information of the radiation dose detecting unit and the positional information of the object inspected by the radiation inspection apparatus are transmitted to the information processing unit for processing to generate guidance information in step S906. Finally, the guidance information is presented by the information presentation unit (step S908). In one embodiment of the present invention, more specifically, what is acquired by the information acquisition unit is an image, and the positional information of the radiation dose detection unit is a position of the radiation dose detection unit in the image, and the positional information of the object is a position of the object in the image. In another embodiment of the present invention, the information acquisition unit is configured to acquire a 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.
The present application also provides a computer-readable storage medium having stored therein instructions that, 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 use 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 separate entities. These functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
The above examples mainly illustrate the guide device for a radiation inspection apparatus, the method of using the same, and a computer-readable storage medium of the present invention. Although only a few embodiments of the present invention have been described, those skilled in the art will appreciate that the present invention may 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 various modifications and substitutions may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.
Claims (20)
1. A guiding device for a radiation examination apparatus, the radiation examination apparatus comprising a radiation dose detection unit for detecting a radiation dose received by the radiation examination apparatus, characterized in that the guiding device comprises:
an information acquisition unit configured to acquire position information of the radiation dose detection unit and position information of an object inspected by the radiation inspection apparatus, respectively;
an information processing unit, communicatively coupled to the information acquisition unit, generating guidance information for an object examined by the radiation inspection apparatus according to the position information of the radiation dose detection unit and the position 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 of claim 1, wherein:
the information acquisition unit is used for acquiring an image; and is
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 of claim 2, wherein:
the guiding device comprises 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 image according to the position of the marker in the image.
4. The guiding device according to claim 2, wherein the information obtaining unit determines the position of the radiation dose detecting unit in the image according to the characteristic point of the radiation dose detecting unit.
5. The guiding device as defined in claim 2, wherein the information acquisition unit determines the position of the radiation dose detection unit in the image by object recognition.
6. The guide device of claim 3, wherein:
if the object covers the radiation dose detection unit in the image, the guiding information generated by the information processing unit indicates that the object is positioned correctly.
7. The guide device of claim 1, wherein:
the information acquisition unit is used for acquiring a depth image; and is
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 of claim 7, wherein:
the guiding device comprises 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.
9. The guiding device as defined in claim 7, wherein the information acquisition unit determines the position of the radiation dose detection unit in the image according to the characteristic points of the radiation dose detection unit.
10. The guiding device as defined in 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 of claim 8, wherein:
if the object covers the ray dose detection unit in the depth image, the guiding information generated by the information processing unit indicates that the object is positioned correctly.
12. The guide device of claim 11, wherein:
the information acquisition unit further determines the 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, auditory information, and tactile information.
14. The guidance device of claim 1, wherein the information processing unit comprises a software module and a hardware module that work in concert.
15. A radiation inspection apparatus comprising a guide arrangement according to any one of claims 1-14.
16. A radiation inspection apparatus according to claim 15, wherein said radiation inspection apparatus controls the radiation dose emitted from a radiation source in said radiation inspection apparatus in accordance with the radiation dose detected by said radiation dose detecting unit.
17. A method of performing a radiation examination using a guide device according to any one of claims 1-14 or a radiation examination device according to any one of claims 15-16, the method comprising the steps of:
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, by the information acquisition unit, position information of the radiation dose detection unit and position information of an object inspected by the radiation inspection apparatus;
transmitting the position information of the radiation dose detection unit and the position information of the object inspected by the radiation inspection apparatus to the information processing unit for processing to generate the guidance information; and
and presenting the guidance information by using the information presentation unit.
18. The method of claim 17, wherein:
acquiring an image 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 image, and the position information of the object is a position of the object in the image.
19. The method of 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 one of claims 17-19.
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