Exposure method and device of mobile DR equipment

Abstract

The invention discloses an exposure method and device for mobile DR equipment, and relates to the technical field of medical equipment. In the embodiment of the invention, the mobile DR equipment can automatically identify the optical image acquired by the image acquisition assembly so as to obtain the exposure part, and under the condition that the exposure part is determined to be the target part to be exposed, the target exposure parameter is automatically acquired based on the exposure part, and then the exposure part is exposed based on the target exposure parameter. The exposure part and the target exposure parameter do not need to be set manually, so that the scanning efficiency of the scanned object is improved. Moreover, the target exposure parameter is obtained based on the exposure part only when the identified exposure part is determined to be the target part to be exposed, so that high exposure accuracy can be ensured.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to an exposure method and device for a mobile DR device. Background Art

[0002] Mobile digital radiography (DR) equipment can meet the filming needs of patients who are not suitable for movement in emergency rooms, operating rooms and ICUs. Mobile DR equipment includes: a radiation source and a freely movable detector. When in use, the detector is placed under the body of the scanned object, and the radiation source is aligned with the exposure part of the scanned object and the detector is exposed, and the scanned image can be collected.

[0003] Before the mobile DR device exposes the scanned object, it is necessary to first obtain the target part to be exposed and the exposure parameters of the target part. Currently, the mobile DR device can display multiple parts. The doctor can select the target part from the multiple parts, and the mobile DR device can obtain the target part to be exposed in response to the operation of selecting the target part. In addition, the doctor can also manually input the exposure parameters of the target part. The mobile DR device can obtain the exposure parameters in response to the doctor's input operation.

[0004] It can be seen that the current mobile DR device is relatively inefficient in acquiring the target part to be exposed and the exposure parameters of the target part. Summary of the invention

[0005] The present application provides an exposure method and device for a mobile DR device, which can solve the problem in the related art that the mobile DR device acquires the target part to be exposed of the scanned object and the exposure parameters of the target part are inefficient. The technical solution is as follows:

[0006] In one aspect, an exposure method of a mobile DR device is provided, wherein the mobile DR device comprises: an image acquisition component and a radiation source, wherein the field of view of the image acquisition component covers the irradiation range of the radiation source; the method comprises:

[0007] Acquiring an optical image of the scanned object by means of the image acquisition component;

[0008] Obtaining an exposure portion of the scanned object based on the optical image recognition;

[0009] If the exposure portion is a target portion to be exposed, obtaining a target exposure parameter based on the exposure portion;

[0010] The exposure portion is exposed based on the target exposure parameter.

[0011] Optionally, acquiring a target exposure parameter based on the exposure part includes:

[0012] Based on the exposure part, obtaining recommended exposure parameters;

[0013] The target parameter in the recommended exposure parameter is adjusted to obtain the target exposure parameter, where the target parameter is a parameter that affects the exposure dose of the mobile DR device.

[0014] Optionally, adjusting the target parameters in the recommended exposure parameters to obtain the target exposure parameters includes:

[0015] Acquiring a target exposure dose, wherein the target exposure dose is determined based on a target volume thickness at the exposure portion of the scanned object;

[0016] The target parameters in the recommended exposure parameters are adjusted based on the target exposure dose to obtain target exposure parameters.

[0017] Optionally, obtain the target exposure dose, including:

[0018] The exposure dose corresponding to the target body thickness in the corresponding relationship between body thickness and exposure dose is determined as the target exposure dose.

[0019] Optionally, the mobile DR device further includes: a detector; before determining the exposure dose corresponding to the target body thickness in the correspondence relationship between body thickness and exposure dose as the target exposure dose, the method further includes:

[0020] Acquire a first distance between the detector and the radiation source, and a second distance from the radiation source to a body surface of the scanned object;

[0021] The target volume thickness is determined based on a difference between the first distance and the second distance.

[0022] Optionally, obtain the target exposure dose, including:

[0023] When the difference between the target body thickness and the body thickness corresponding to the recommended exposure parameter is greater than a difference threshold, a target exposure dose is acquired.

[0024] Optionally, the method further includes:

[0025] If the exposure part is not the target part, a prompt message is issued, wherein the prompt message is used to prompt the user to adjust the position of the radiation source.

[0026] On the other hand, an exposure device of a mobile DR device is provided, the mobile DR device comprising: an image acquisition component and a radiation source, the field of view of the image acquisition component covering the irradiation range of the radiation source; the device comprising:

[0027] An acquisition module, used for acquiring an optical image of a scanned object through the image acquisition component;

[0028] A recognition module, used for obtaining an exposure position of the scanned object based on the optical image recognition;

[0029] an acquisition module, configured to acquire target exposure parameters based on the exposure part if the exposure part is a target part to be exposed;

[0030] An exposure module is used to expose the exposure part based on the target exposure parameter.

[0031] On the other hand, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the exposure method of the mobile DR device as described in the above aspects is implemented.

[0032] On the other hand, a computer program product is provided, which includes a computer program or computer instructions, and when the computer program or the computer instructions are executed by a processor, the exposure method of the mobile DR device as described in the above aspects is implemented.

[0033] The beneficial effects of the technical method provided by this application include at least:

[0034] The present application provides an exposure method and device for a mobile DR device, wherein the mobile DR device can automatically identify an optical image acquired by an image acquisition component to obtain an exposure portion, and when the exposure portion is determined to be a target portion to be exposed, automatically obtain a target exposure parameter based on the exposure portion, and then expose the exposure portion based on the target exposure parameter. Since there is no need to manually set the exposure portion and the target exposure parameter, the scanning efficiency of the scanned object is improved. Furthermore, since the target exposure parameter is obtained based on the exposure portion when the identified exposure portion is determined to be a target portion to be exposed, the accuracy of the exposure can be ensured to be high.

[0035] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of a mobile DR device provided in an embodiment of the present application;

[0037] Figure 2 is a flow chart of an exposure method of a mobile DR device provided in an embodiment of the present application;

[0038] Figure 3 is a flow chart of another exposure method of a mobile DR device provided in an embodiment of the present application;

[0039] Figure 4 It is a structural schematic diagram of an exposure device of a mobile DR device provided in an embodiment of the present application;

[0040] Figure 5 It is a schematic diagram of the structure of an exposure device of another mobile DR device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0042] The present application embodiment provides a structural diagram of a mobile DR device. Figure 1 The mobile DR device 10 includes: a ray source 01, a detector 02, an image acquisition component ( Figure 1 The X-ray source 01 and the detector 02 are connected to the workstation 03 respectively. The X-ray source 01 is used to emit X-rays under the control of the workstation 03. The detector 02 is used to receive the X-rays emitted by the X-ray source 01 and send the collected data to the workstation 03. The detector 02 can move freely.

[0043] The field of view of the image acquisition component needs to cover the irradiation range of the ray source 01, and the image acquisition component is used to acquire the optical image between the ray source 01 and the detector 02. The workstation 03 is built into the mobile DR device, and can control the operation of the mobile DR device and process data (such as data collected by the detector 02). Figure 1 As shown, the workstation 03 may be a computer.

[0044] Optionally, the workstation 03 may establish wireless communication connections with the ray source 01 and the detector 02 respectively. Figure 1 The mobile DR device further includes a router 04. The router 04 can be built in the mobile DR device. The ray source 01, the detector 02 and the workstation 03 are all connected to the router 04. In this way, the ray source 01, the detector 02 and the workstation 03 can be located in a local area network, so that they can communicate with each other.

[0045] The image acquisition component can be a camera or a camera head. The image acquisition component is located between the ray source 01 and the detector 02. For example, the image acquisition component can be installed at one end of the ray source 01 close to the detector 02. Specifically, the ray source 01 includes a tube and a beam limiter. The image acquisition component can be installed at one end of the beam limiter away from the tube. The tube is used to generate and emit X-rays, and the beam limiter is used to adjust the size and shape of the X-rays. The center of the outlet of the tube and the center of the beam limiter can be on a straight line, and the straight line is perpendicular to the plane where the outlet of the beam limiter is located.

[0046] The present application provides an exposure method for a mobile DR device, which is applied to the mobile DR device. The mobile DR device includes: a ray source and an image acquisition component, wherein the field of view of the image acquisition component covers the irradiation range of the ray source, such as the field of view is slightly larger than the irradiation range. For example, the mobile DR device can be Figure 1 The mobile DR device shown. Figure 1 , the method comprising:

[0047] Step 101: Capture an optical image of a scanned object through an image acquisition component.

[0048] In the embodiment of the present application, when it is necessary to expose the scanned object through the mobile DR device to obtain a scanned image of the scanned object, the doctor can aim the radiation source of the mobile DR device at the target part to be exposed of the scanned object. After that, the doctor can start the mobile DR device. After the mobile DR device is started, the image acquisition component can be controlled to shoot to acquire an optical image of the scanned object.

[0049] The optical image may include: a target portion to be exposed in the scanned object that is within the irradiation range of the radiation source.

[0050] Step 102: Obtain the exposure position of the scanned object based on optical image recognition.

[0051] After the mobile DR device obtains the optical image through the image acquisition component, it can perform target recognition on the optical image to obtain the exposure part of the scanned object currently located within the irradiation range of the radiation source.

[0052] Step 103: If the identified exposure portion is the target portion to be exposed, a target exposure parameter is obtained based on the exposure portion.

[0053] The mobile DR device can determine whether the identified exposure part is the target part to be exposed. If the mobile DR device determines that the identified exposure part is the target part to be exposed, it can be determined that the radiation source has been aligned with the exposure part, and then the target exposure parameters can be obtained based on the exposure part.

[0054] In the embodiment of the present application, the mobile DR device may pre-store the correspondence between the part and the recommended parameter. The mobile DR device may directly determine the recommended parameter corresponding to the exposure part as the recommended exposure parameter of the exposure part.

[0055] Alternatively, after obtaining the recommended exposure parameter, the mobile DR device may adjust the target parameter of the recommended exposure parameter to obtain the target exposure parameter. The number of the target parameters may be at least one. The at least one target parameter may include at least one of tube voltage (kVp), tube current (mA), and exposure time (ms). For example, the number of the at least one target parameter may be multiple, and the multiple target parameters may include tube voltage, tube current, and exposure time.

[0056] Step 104: Expose the exposure part based on the target exposure parameters.

[0057] After the mobile DR device obtains the target exposure parameters, it can expose the exposure part of the scanned object based on the target exposure parameters to obtain a scanned image of the target part.

[0058] In summary, the embodiment of the present application provides an exposure method for a mobile DR device, wherein the mobile DR device can automatically identify the optical image acquired by the image acquisition component to obtain an exposure portion, and when the exposure portion is determined to be a target portion to be exposed, the target exposure parameter is automatically acquired based on the exposure portion, and then the exposure portion is exposed based on the target exposure parameter. Since there is no need to manually set the exposure portion and the target exposure parameter, the scanning efficiency of the scanned object is improved. Furthermore, since the target exposure parameter is acquired based on the exposure portion when the identified exposure portion is determined to be a target portion to be exposed, the accuracy of the exposure can be ensured to be high.

[0059] The present application embodiment takes the target exposure parameter obtained by adjusting the recommended exposure parameter as an example to exemplarily illustrate the exposure method of the mobile DR device provided in the present application embodiment. The method can be applied to the mobile DR device. The mobile DR device includes a ray source and an image acquisition component, and the field of view of the image acquisition component covers the irradiation range of the ray source. Figure 2 , the method may include:

[0060] Step 201: Capture an optical image of a scanned object through an image acquisition component.

[0061] In an embodiment of the present application, when it is necessary to expose the scanned object through a mobile DR device to obtain a scanned image of the scanned object, the doctor can aim the radiation source of the mobile DR device at the target part of the scanned object to be exposed. After that, the doctor can start the mobile DR device. After the mobile DR device is started, the image acquisition component can be controlled to shoot to acquire an optical image of the scanned object. The optical image may include: an exposed part of the scanned object within the irradiation range of the radiation source.

[0062] Before the mobile DR device acquires the optical image of the scanned object through the image acquisition component, it can also acquire (also referred to as registering) the object information of the scanned object. After the registration is completed, the mobile DR device can control the image acquisition component to acquire the optical image. The object information may include: attribute information of the scanned object, and the name of the target part to be exposed. The attribute information may include: name, age, and gender. The target part may be one of multiple parts of the scanned object. The multiple parts may include: chest, abdomen, hands or legs, etc. The number of the target parts may be one or more.

[0063] In an optional implementation, the workstation of the mobile DR device may display an information registration interface. The mobile DR device may obtain the attribute information of the scanned object in response to the doctor inputting the attribute information of the scanned object in the information registration interface. In addition, the workstation may display multiple parts. The mobile DR device may obtain the target part to be exposed in response to the doctor's selection operation for the target part among the multiple parts. The selection operation may be a voice operation or a touch operation, such as a click operation.

[0064] It is understandable that the workstation can display an anatomically programmed radiography (APR) protocol list. The APR protocol list includes multiple parts, and the doctor can select the target part from the list. Accordingly, the mobile DR device can obtain the target part to be exposed. For example, the workstation can display a protocol list display interface after the attribute information is input. The protocol list display interface displays the APR protocol list.

[0065] Table 1 shows an APR protocol list. As can be seen from Table 1, the APR protocol list includes not only multiple parts, but also recommended exposure parameters corresponding to each part, and identification (ID) of each part. The identification is used to uniquely identify the exposure part. For example, the identification can be the code of the exposure part.

[0066] Table 1

[0067] APR Location Part ID kv mAs …… 1 Chest position 1001 …… …… …… 2 Lateral chest position 1002 …… …… …… 3 …… …… …… …… ……

[0068] In another optional implementation, the mobile DR device can establish a communication connection with the mobile terminal, such as the mobile terminal can access the router built into the mobile DR device, so as to communicate with the workstation of the mobile DR device. The workstation of the mobile DR device and the mobile terminal can realize data synchronization operation through the communication connection. The synchronization operation means that for the same data, the operation is completed at either end of the mobile terminal and the workstation, and the other end can automatically complete the synchronization. Specifically, a first application is installed in the operating system of the workstation. A second application is installed in the operating system of the mobile terminal. The second application can pass the operation data to the first application of the workstation through a socket. The first application can complete the synchronization operation. The synchronization operation includes: object information of the scan object registered synchronously.

[0069] Based on this, the mobile terminal can register the object information of the scanned object, and the mobile DR device can synchronize the object information to realize the registration of the object information. That is, the mobile terminal can be configured for the mobile DR device so that the mobile DR device registers the object information through the mobile terminal. The process of the mobile terminal registering the object information can refer to the process of the workstation of the mobile DR device registering the object information. Alternatively, the mobile terminal can be connected to the radiology information system (RIS) through an intranet interface or a wireless fidelity (Wi-Fi) connection to obtain the object information of the scanned object from the RIS.

[0070] Optionally, the mobile terminal may be a tablet computer or a laptop computer. For example, the mobile terminal may be a tablet computer. The operating systems of the workstation and the mobile terminal may both be Windows operating systems. The first application may be used to control hardware devices such as high-voltage generators, detectors, and racks, and support human-computer interaction between the workstation and the user. The second application may support image display and support human-computer interaction between the handheld terminal and the user.

[0071] It is understandable that the mobile terminal and the mobile DR device can also be used separately, that is, when disconnected, the mobile terminal and the mobile DR device can work independently. Since the mobile terminal and the mobile DR device can both operate on the same data, when the mobile terminal and the mobile DR device are separated and then used together again, if the data obtained by both ends are different, the mobile DR device can merge the data at both ends and use the merged data. In this way, the object information of the scanned object can be obtained by the mobile DR device without registering the object information on the mobile DR device.

[0072] It can be seen from the above description that the mobile DR device provided in the embodiment of the present application has high flexibility in acquiring object information of the scanned object.

[0073] Step 202: Obtain the exposure part of the scanned object based on the collected optical image recognition.

[0074] After the mobile DR device obtains the optical image captured by the image acquisition component, it can perform target recognition on the optical image to obtain the identification of the exposure part of the scanned object.

[0075] In an embodiment of the present application, before performing target recognition on the collected optical image, the mobile DR device can determine whether the radiation source is aligned with the detector. If the mobile DR device determines that the radiation source is aligned with the detector, target recognition can be performed based on a portion of the optical image that is within the imaging range of the detector. If the mobile DR device determines that the radiation source is not aligned with the detector, the doctor can be prompted to adjust the position of the detector first to align the radiation source with the detector, then collect the optical image, and perform an operation based on the collected optical image recognition to obtain the exposure part of the scanned object to ensure high reliability of target recognition.

[0076] It is understandable that the beam limiter of the mobile DR device is installed with a Linux system, and the Linux system runs a third application. The third application can be used to obtain the optical image captured by the image acquisition component. And the third application can obtain the position of the detector and the position of the beam limiter. If the third application determines that the center of the border of the detector coincides with the center of the border of the beam limiter based on the position of the detector and the position of the beam limiter, it can be determined that the detector and the ray source are aligned; otherwise, it can be determined that the detector and the ray source are not aligned.

[0077] The position of the detector includes the coordinates of the four vertices of the detector in the physical coordinate system. The position of the beam limiter may include the coordinates of the four vertices of the beam limiter in the physical coordinate system. The physical coordinate system may be a geodetic coordinate system, or a coordinate system established in the space where the ray source and the detector are located. The border of the detector may be used to characterize the imaging area of ​​the detector. The border of the beam limiter may be used to characterize the irradiation range of the ray source.

[0078] It is understandable that a plurality of first locators are provided on the ray source (such as four first locators are provided at four vertices), and a plurality of second locators are provided on the detector. The third application can obtain the position of the ray source and the position of the detector based on the position of the first locator and the position of the second locator. The first locator and the second locator may include: a positioning sensor.

[0079] In an embodiment of the present application, a third application can acquire the images captured by the image acquisition component in real time, and convert them into a video stream and pass them to the second application of the mobile terminal through a socket. The second application can call an interface to display the video stream on the mobile terminal to achieve real-time display of the image. In addition, the third application can also pass the position of the detector and the position of the beam limiter to the second application through the socket. The second application can then draw the border of the detector and the border of the beam limiter on the displayed image according to the position. In this way, the doctor can intuitively see whether the radiation source is aligned with the detector.

[0080] Step 203: Detect whether the identified exposure portion is the target portion to be exposed.

[0081] If the mobile DR device determines that the identified exposure part is the target part to be exposed, step 204 may be performed. If the mobile DR device determines that the exposure part is not the target part, step 209 may be performed.

[0082] As an optional example, the mobile DR device may detect whether the identification of the exposure part is the same as the identification of the target part to be exposed. If the mobile DR device determines that the identification of the exposure part is the same as the identification of the target part, it may be determined that the exposure part is the target part to be exposed. If the mobile DR device determines that the identification of the exposure part is different from the identification of the target part, it may be determined that the exposure part is not the target part to be exposed. The target part to be exposed may be obtained by registering the object information of the scanned object.

[0083] It is understandable that, in the case of multiple target parts, the mobile DR device can detect whether the identification of the exposure part is the same as the identification of each target part. If the mobile DR device determines that the identification of the exposure part is different from the identification of any target part among the multiple target parts, it can be determined that the exposure part is not the target part to be exposed. If the mobile DR device determines that the identification of the exposure part is the same as the identification of an unexposed target part among the multiple target parts, it can be determined that the exposure part is the target part to be exposed.

[0084] As another optional example, after the mobile DR device identifies the exposure site, it can display the name of the exposure site, a confirmation control, and an input control. The doctor can view the name and touch the confirmation control when determining that the name is correct. Accordingly, the mobile DR device can determine that the identified exposure site is the target site to be exposed in response to the touch operation on the confirmation control. And, if the doctor determines that the name is incorrect, he can touch the input control. Accordingly, the mobile DR device can determine that the identified exposure site is not the target site in response to the confirmation operation on the input control.

[0085] As another optional example, the mobile terminal can detect whether the identified exposure part is the target part to be exposed, and can send the detection result to the mobile DR device. The detection result is: the exposure part is the target part, or the exposure part is not the target part. The mobile DR device can determine the next step to be performed based on the detection result.

[0086] It is understandable that the process of the mobile terminal determining whether the identified exposure part is the target part to be exposed can refer to the relevant implementation process of the mobile DR device determining whether the exposure part is the target part, and the embodiments of the present application will not be repeated here. In addition, after the mobile DR device obtains the optical image captured by the image acquisition component, the optical image can be sent to the mobile terminal. The mobile terminal can then identify the exposure part based on the optical image.

[0087] In the embodiment of the present application, the third application program can adjust the opening of the beam limiter to a suitable size when determining that the identified exposure portion is the target portion.

[0088] Step 204: Obtain recommended exposure parameters based on the exposure location.

[0089] If the mobile DR device determines that the identified exposure part is the target part to be exposed, the recommended exposure parameters can be obtained based on the exposure part. In this way, incorrect exposure can be effectively avoided and the reliability of exposure can be ensured to be high.

[0090] In an embodiment of the present application, the mobile DR device pre-stores a correspondence between a part and an exposure parameter. The mobile DR device can determine the exposure parameter corresponding to the exposure part in the correspondence as the recommended exposure parameter for the exposure part. For example, the correspondence can be recorded in the ARP protocol.

[0091] Step 205: Obtain the target volume thickness at the exposure portion of the scanned object.

[0092] In an embodiment of the present application, the mobile DR device can obtain a first distance from a detector of the mobile DR device to a radiation source, and a second distance from the radiation source to a body surface of a scanned object. Then, the mobile DR device can determine a target body thickness at an exposure portion of the scanned object based on a difference between the first distance and the second distance. The target body thickness is positively correlated with the difference. For example, the target body thickness is the difference.

[0093] The difference between the first distance and the second distance refers to the difference obtained by subtracting the second distance from the first distance. The first distance refers to the vertical distance from the detector to the ray source, which may also be called source image distance (SID).

[0094] Optionally, the image acquisition component described above may be a depth camera. The mobile DR device may obtain the distance from the radiation source to the body surface of the scanned object through the depth camera. The mobile DR device may determine the first distance from the detector to the radiation source based on the first locator on the radiation source and the second locator on the detector. The first locator may also include a positioning base station, and the second locator may also include a positioning tag. The positioning tag may transmit a signal, and the positioning base station may receive a signal, and determine the first distance between the detector and the radiation source based on the received signal.

[0095] It is understandable that the third application can obtain the distance from the ray source to the body surface of the scanned object based on the image captured by the depth camera. Afterwards, the third application can pass the distance to the first application of the workstation through the socket. Correspondingly, the workstation can obtain the distance.

[0096] Step 206: Determine a target exposure dose based on the target body thickness.

[0097] The mobile DR device may pre-store a correspondence between body thickness and exposure dose. After the mobile DR device acquires the target body thickness, the exposure dose corresponding to the target body thickness in the correspondence may be determined as the target exposure dose.

[0098] In the embodiment of the present application, after the mobile DR device obtains the target body thickness, the target exposure dose can be directly determined based on the target body thickness. Alternatively, the mobile DR device can first detect whether the target body thickness at the exposure part is within the body thickness range. If the mobile DR device determines that the target body thickness is outside the body thickness range, the target exposure dose can be determined based on the target body thickness. The body thickness range can be pre-stored by the mobile DR device.

[0099] It is understandable that the effect of scanning a scan object whose thickness is within the thickness range is usually better by using the correspondence between the parts and the exposure parameters pre-stored in the mobile DR device. However, during the actual scanning process, the body thickness of the scan object at the exposure part may be outside the thickness range. At this time, if the recommended exposure parameters recorded in the corresponding relationship are continued to be used to expose the scan object, there may be a problem of poor quality of the scanned image due to insufficient exposure, or poor quality of the scanned image due to overexposure, and an increase in the radiation dose of the scanned object. Therefore, the mobile DR device provided in the embodiment of the present application can obtain a target exposure dose based on the target body thickness, and use the target exposure dose to expose the scanned object, thereby ensuring that the obtained scanned image has a good quality and avoiding increasing the radiation dose of the scanned object.

[0100] Step 207: Adjust the target parameters in the recommended exposure parameters based on the target exposure dose to obtain the target exposure parameters.

[0101] The mobile DR device may adjust the target parameter in the recommended exposure parameter to obtain a target exposure parameter corresponding to the target exposure dose. The target parameter is a parameter that affects the exposure dose of the mobile DR device. The number of the target parameters may be at least one. The at least one target parameter may include: at least one of: tube voltage, tube current, and exposure duration. For example, the number of the at least one target parameter is multiple, and the multiple target parameters include: tube voltage, tube current, and exposure duration.

[0102] That is, the mobile DR device provided in the embodiment of the present application can adaptively adjust the recommended exposure parameters based on the target body thickness to obtain target exposure parameters that match the target body thickness, thereby ensuring high accuracy of exposure.

[0103] Step 208: Expose the exposure part based on the target exposure parameters.

[0104] After the mobile DR device adjusts and obtains the target exposure parameters, the target exposure parameters can be used to expose the exposure part to be exposed, thereby obtaining a scanned image.

[0105] In an embodiment of the present application, when a mobile terminal is configured, the scanned image will be automatically displayed on the mobile terminal. The doctor can perform post-processing operations on the image directly on the mobile terminal. The post-processing operations may include operations such as marking, image scaling, image translation, image rotation, image flipping, image rotation and image cropping. In this way, after the examination, the doctor can return the mobile DR device to the fixed placement point and only needs to take away the mobile terminal to complete the subsequent operations of the image. During this period, the mobile DR device can be turned off. As a result, the post-processing operations of the image can be completed without relying on the mobile DR device, that is, without the mobile DR device which is large in size and inconvenient to move.

[0106] After completing the post-processing of the image, the mobile terminal can access the hospital's intranet through the intranet interface or Wi-Fi connection, and send the post-processed image to the picture archiving and communication system (PACS) and film server, etc., for doctors to read and diagnose. Since it is easier to move the mobile terminal than the mobile DR device, the efficiency of sending the post-processed image can be improved.

[0107] Step 209: Send a prompt message.

[0108] In the embodiment of the present application, the alignment accuracy of the mobile DR device and the target part, as well as the reliability of the adopted target recognition algorithm, will affect the detection result of whether the exposure part is the target part to be exposed. Based on this, if the mobile DR device determines that the identified exposure part is not the target part to be exposed, a prompt message can be issued first. The prompt message is used to prompt the adjustment of the position of the radiation source so that the radiation source is aligned with the target part of the scanned object.

[0109] After the adjustment is completed, the mobile DR device can collect optical images again through the image acquisition component, and determine whether the identified exposure part is the target part based on the optical image. If the mobile DR device determines that the exposure part is the target part, step 204 can be executed. If the mobile DR device determines that it is not the target part, the target part can be acquired in response to the doctor's input operation, and then step 204 is executed.

[0110] In the embodiment of the present application, during the exposure of the scanned object, in order to avoid radiation, the doctor will generally move to a safe area (such as outside the ward, etc.). During the exposure, the doctor can also instruct the scanned object to adjust the position through the mobile terminal, and the scanned object can also communicate with the doctor in reverse.

[0111] Specifically, the mobile terminal includes: a microphone and a speaker (such as an external speaker), so that the doctor can provide a voice dialogue guidance function to the scanned object through the mobile terminal. The second application of the mobile terminal can transmit the voice emitted by the doctor collected by the microphone of the mobile terminal to the first application of the workstation of the mobile DR device through the socket. The first application can then call the interface to play the voice through the speaker of the workstation. Similarly, the scanned object can also communicate with the doctor through the microphone of the workstation and the speaker of the mobile terminal. In this way, on the one hand, it can facilitate real-time communication between the scanned object and the doctor, so that the doctor can guide the scanned object to adjust the position; on the other hand, the doctor does not need to return from the safe area to the area where the mobile DR device is located to guide the scanned object to adjust the position, thereby improving the efficiency of positioning.

[0112] It is understandable that the order of the steps of the exposure method of the mobile DR device provided in the embodiment of the present application can be appropriately adjusted, and the steps can be increased or decreased accordingly according to the situation. For example, steps 206 to 208 can be deleted according to the situation. Any technician familiar with the technical field can easily think of a change within the technical scope disclosed in this application, which should be included in the protection scope of this application, so it will not be repeated.

[0113] In summary, the embodiment of the present application provides an exposure method for a mobile DR device, wherein the mobile DR device can automatically identify the optical image acquired by the image acquisition component to obtain an exposure portion, and when the exposure portion is determined to be a target portion to be exposed, the target exposure parameter is automatically acquired based on the exposure portion, and then the exposure portion is exposed based on the target exposure parameter. Since there is no need to manually set the exposure portion and the target exposure parameter, the scanning efficiency of the scanned object is improved. Furthermore, since the target exposure parameter is acquired based on the exposure portion when the identified exposure portion is determined to be a target portion to be exposed, the accuracy of the exposure can be ensured to be high.

[0114] The embodiment of the present application provides an exposure device for a mobile DR device, which can execute the method provided by the above method embodiment. The mobile DR device includes: an image acquisition component and a ray source, and the field of view of the image acquisition component covers the irradiation range of the ray source. Figure 4 , the device 300 comprises:

[0115] The acquisition module 301 is used to acquire an optical image of the scanned object through an image acquisition component.

[0116] The recognition module 302 is used to obtain the exposure position of the scanned object based on optical image recognition.

[0117] The acquisition module 303 is used to acquire target exposure parameters based on the exposure part if the exposure part is a target part to be exposed.

[0118] The exposure module 304 is used to expose the exposure part based on the target exposure parameters.

[0119] Optionally, the acquisition module 303 may be used to:

[0120] Based on the exposure part, obtain recommended exposure parameters;

[0121] The target parameters in the recommended exposure parameters are adjusted to obtain the target exposure parameters, where the target parameters are parameters that affect the exposure dose of the mobile DR device.

[0122] Optionally, the acquisition module 303 may be used to:

[0123] Acquiring a target exposure dose, where the target exposure dose is determined based on a target body thickness at an exposure portion of the scanned object;

[0124] The target parameters in the recommended exposure parameters are adjusted based on the target exposure dose to obtain the target exposure parameters.

[0125] Optionally, the acquisition module 303 may be used to:

[0126] The exposure dose corresponding to the target body thickness in the corresponding relationship between body thickness and exposure dose is determined as the target exposure dose.

[0127] Optionally, the mobile DR device further includes: a detector. Figure 5 The device 300 may further include: a determination module 305. The determination module 305 may be used to:

[0128] Before determining the exposure dose corresponding to the target body thickness in the correspondence between body thickness and exposure dose as the target exposure dose, a first distance between the detector and the radiation source and a second distance from the radiation source to the body surface of the scanned object are obtained; and the target body thickness is determined based on the difference between the first distance and the second distance.

[0129] Optionally, the acquisition module 303 may be used to:

[0130] When the difference between the target body thickness and the body thickness corresponding to the recommended exposure parameters is greater than a difference threshold, the target exposure dose is obtained.

[0131] Optional, please continue to see Figure 5 The device 300 may further include: a prompt module 306. The prompt module 306 may be used to:

[0132] If the exposure part is not the target part, a prompt message is issued, which is used to prompt the adjustment of the position of the radiation source.

[0133] In summary, the embodiment of the present application provides an exposure device of a mobile DR device, which can automatically identify the optical image collected by the image acquisition component to obtain the exposure part, and when it is determined that the exposure part is the target part to be exposed, automatically obtain the target exposure parameters based on the exposure part, and then expose the exposure part based on the target exposure parameters. Since there is no need to manually set the exposure part and the target exposure parameters, the scanning efficiency of the scanned object is improved. In addition, since the target exposure parameters are obtained based on the exposure part when it is determined that the identified exposure part is the target part to be exposed, the accuracy of the exposure can be ensured to be high.

[0134] The present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the exposure method of the mobile DR device provided in the above method embodiment is implemented. For example, Figure 2 or Figure 3 The method shown.

[0135] The present application also provides a computer program product, which includes a computer program or a computer instruction, and when the computer program or the computer instruction is executed by a processor, the exposure method of the mobile DR device provided in the above method embodiment is implemented. For example, Figure 2 or Figure 3 The method shown.

[0136] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0137] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0138] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0139] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0140] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0141] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An exposure method for a mobile DR device, characterized in that: The mobile DR device comprises: an image acquisition component and a ray source, wherein the field of view of the image acquisition component covers the irradiation range of the ray source; and the method comprises: Acquiring an optical image of the scanned object by means of the image acquisition component; Obtaining an exposure portion of the scanned object based on the optical image recognition; If the exposure portion is a target portion to be exposed, obtaining a target exposure parameter based on the exposure portion; The exposure portion is exposed based on the target exposure parameter.

2. The method according to claim 1, characterized in that Acquiring target exposure parameters based on the exposure part includes: Based on the exposure part, obtaining recommended exposure parameters; The target parameter in the recommended exposure parameter is adjusted to obtain the target exposure parameter, where the target parameter is a parameter that affects the exposure dose of the mobile DR device.

3. The method according to claim 2, characterized in that Adjusting the target parameters in the recommended exposure parameters to obtain the target exposure parameters includes: Acquiring a target exposure dose, wherein the target exposure dose is determined based on a target volume thickness at the exposure portion of the scanned object; The target parameters in the recommended exposure parameters are adjusted based on the target exposure dose to obtain target exposure parameters.

4. The method according to claim 3, characterized in that Obtain target exposure dose, including: The exposure dose corresponding to the target body thickness in the corresponding relationship between body thickness and exposure dose is determined as the target exposure dose.

5. The method according to claim 4, characterized in that The mobile DR device further includes: a detector; before determining the exposure dose corresponding to the target body thickness in the correspondence relationship between body thickness and exposure dose as the target exposure dose, the method further includes: Acquire a first distance between the detector and the radiation source, and a second distance from the radiation source to a body surface of the scanned object; The target volume thickness is determined based on a difference between the first distance and the second distance.

6. The method according to claim 4, characterized in that Obtain target exposure dose, including: When the difference between the target body thickness and the body thickness corresponding to the recommended exposure parameter is greater than a difference threshold, a target exposure dose is acquired.

7. The method according to any one of claims 1 to 6, characterized in that: The method further comprises: If the exposure part is not the target part, a prompt message is issued, wherein the prompt message is used to prompt the user to adjust the position of the radiation source.

8. An exposure device for a mobile DR device, characterized in that: The mobile DR device comprises: an image acquisition component and a ray source, wherein the field of view of the image acquisition component covers the irradiation range of the ray source; the device comprises: An acquisition module, used for acquiring an optical image of a scanned object through the image acquisition component; A recognition module, used for obtaining an exposure position of the scanned object based on the optical image recognition; an acquisition module, configured to acquire target exposure parameters based on the exposure part if the exposure part is a target part to be exposed; An exposure module is used to expose the exposure part based on the target exposure parameter.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

10. A computer program product, characterized in that The computer program product comprises a computer program or a computer instruction, and when the computer program or the computer instruction is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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