Method for pairing a mobile x-ray detector with an x-ray tube system

Abstract

The invention relates to a method (10) for pairing a mobile X-ray detector (2) with an X-ray tube system (1), wherein the mobile X-ray detector (2) comprises a first wireless communication interface and the X-ray tube system (1) comprises an X-ray tube (5), at least one sensor (6), a computing unit and a second wireless communication interface. According to the method (10), sensor data are obtained (S1) by the at least one sensor (6) and transmitted (S2) to the computing unit. The mobile X-ray detector (2) located in a predefined portion of space is identified (S3) by the computing unit on the basis of the received sensor data. Then, the mobile X-ray detector (2) is paired with the X-ray tube system (1) by the computing unit via the second wireless communication interface and via the first wireless communication interface. The invention also relates to a corresponding X-ray tube system (1).

Description

Technical Field

[0001] This invention relates to medical X-ray systems, particularly to X-ray systems that can be used with mobile X-ray detectors, and more particularly to methods for pairing mobile X-ray detectors with X-ray tube systems. Additionally, this invention relates to corresponding X-ray tube systems. Background Technology

[0002] In digital workflows, portable X-ray detectors have replaced computational radiography (CR) cassettes and are easier to handle. Clinically, multiple portable detectors of different sizes (and sometimes different models) are often used and shared between X-ray rooms or systems. Once paired, portable detectors support an intuitive workflow because they are easier to position and lighter than any built-in detector. However, pairing a portable detector with an X-ray system (i.e., the mobile detector and the X-ray machine recognizing each other) is quite cumbersome. For this, the user must scan a barcode in the control room to register the detector with the system. As a result, the operator must decide which detector to use, and if pairing fails or the operator changes their mind, the operator must re-register the detector in the control room, thus wasting a significant amount of time. Summary of the Invention

[0003] Therefore, the object of the present invention is to provide an improved method for pairing a mobile X-ray detector with an X-ray tube system, particularly a method that avoids the aforementioned pairing operation. Furthermore, the object of the present invention is to provide a corresponding X-ray tube system.

[0004] The object of the invention is achieved by the subject matter of the independent claims, wherein further embodiments are included in the dependent claims.

[0005] In one aspect of the invention, a method for pairing a mobile X-ray detector with an X-ray tube system is provided.

[0006] In this context, a mobile X-ray detector is an X-ray detector that can be moved (especially between different rooms). A mobile X-ray detector can be a portable X-ray detector (i.e., a mobile X-ray detector that can be carried), but it can also be a mobile X-ray detector attached to a movable detector mount.

[0007] An X-ray tube system is a medical system that includes an X-ray tube. An X-ray tube system may include a dedicated X-ray detector. In this case, the X-ray tube system may be referred to as an X-ray system. Alternatively, an X-ray tube system may not have a dedicated X-ray detector (i.e., the X-ray tube system operates solely using mobile X-ray detectors). In particular, the mobile X-ray detectors and the X-ray tube system can form a digital X-ray system. Furthermore, the X-ray tube system can be configured to support multiple mobile X-ray detectors; more specifically, the X-ray tube system can be configured to support multiple mobile X-ray detectors via detector sharing.

[0008] Pairing a mobile X-ray detector with an X-ray tube system can mean using the X-ray tube system to identify the mobile X-ray detector. Specifically, pairing a mobile X-ray detector with an X-ray tube system can include configuring the X-ray tube system and / or the mobile X-ray detector such that the mobile X-ray detector can be used with the X-ray tube system to acquire X-ray images. More specifically, pairing a mobile X-ray detector with an X-ray tube system can include: establishing communication between the X-ray tube system and the mobile X-ray detector; configuring the X-ray tube system with the mobile X-ray detector to acquire one or more X-ray images; and / or configuring the mobile X-ray detector with the X-ray tube system to acquire one or more X-ray images.

[0009] The mobile X-ray detector includes a first wireless communication interface. This first wireless communication interface can be used to pair the mobile X-ray detector with an X-ray tube system, for communication between the mobile X-ray detector and the X-ray tube system, and / or for transmitting X-ray images acquired by the mobile X-ray detector.

[0010] An X-ray tube system includes an X-ray tube. The X-ray tube is configured to emit X-rays, and an X-ray detector (particularly a mobile X-ray detector) is capable of detecting the X-rays to obtain X-ray images (particularly medical X-ray images).

[0011] In addition, the X-ray tube system includes at least one sensor, a computing unit, and a second wireless communication interface. The second wireless communication interface can be used to pair the X-ray tube system with a mobile X-ray detector and for communication between the X-ray tube system and the mobile X-ray detector.

[0012] According to this method, sensor data is acquired by at least one sensor. Then, the sensor data is transmitted by the at least one sensor to a computing unit. Therefore, the computing unit receives the sensor data from the at least one sensor. Wired and / or wireless connections can be used to perform the transmission and reception of the sensor data. Alternatively, the sensor data can be acquired, transmitted, and received periodically (e.g., once per second or multiple times per second). The sensor data can be raw sensor data acquired by the at least one sensor, or it can be preprocessed by the at least one sensor.

[0013] The computing unit identifies mobile X-ray detectors located in predefined sections of space based on the received sensor data. In other words, the computing unit can process and / or analyze the received sensor data to identify mobile X-ray detectors located in predefined sections of space.

[0014] Finally, if it has been determined that the mobile X-ray detector is located within a predefined portion of the space, the computing unit pairs the mobile X-ray detector with the X-ray tube system via a second wireless communication interface and via a first wireless communication interface. In this context, pairing may include checking whether the mobile X-ray detector is already paired with the X-ray tube system. If no mobile X-ray detector has been paired with the X-ray tube system, a newly identified mobile X-ray detector is paired with the X-ray tube system. If the identified mobile X-ray detector is already paired with the X-ray tube system, the pairing is maintained. And if a different mobile X-ray detector is paired with the X-ray tube system, the pairing is terminated, and a newly identified X-ray detector is paired with the X-ray tube system.

[0015] This automated pairing of mobile X-ray detectors with X-ray tube systems significantly improves the workflow for pairing mobile X-ray detectors with X-ray tube systems. In particular, no additional manual interaction is required to perform the pairing, saving time for operators of the X-ray system. More specifically, the workflow for operating the X-ray tube system using the mobile X-ray detector becomes more natural and fluid. Furthermore, changing the mobile X-ray detector paired with the X-ray tube system is simple and quick using the described method. Moreover, no special additional hardware is required to perform the pairing of the mobile X-ray detector with the X-ray tube system. In addition, the described method provides increased reliability because it is less likely to pair the X-ray tube system with the incorrect mobile X-ray detector.

[0016] According to an embodiment, the predefined portion of the space includes the line of sight of the X-ray tube. In this context, the line of sight of the X-ray tube can be the centerline of the X-rays emitted by the X-ray tube. Therefore, when a mobile X-ray detector is placed in a portion of the space, the mobile X-ray detector is in or near the line of sight of the X-ray tube, thus within a portion of the space where the X-ray detector can detect the X-rays emitted by the X-ray tube. This may be particularly intuitive for operators of the X-ray system, as the mobile detector placed in the area where the X-ray detector can detect the X-rays emitted by the X-ray tube automatically pairs with the X-ray tube system. Alternatively or additionally, the predefined portion of the space includes at least a portion of the imaging area of ​​the X-ray tube. In this context, the imaging area of ​​the X-ray tube is the area where the X-rays emitted by the X-ray tube enter. Therefore, the mobile X-ray detector can also be identified toward the edge of the imaging area. Alternatively or additionally, the predefined portion of the space is adjacent to or near the imaging area of ​​the X-ray tube. As an example, a predefined portion of the space may surround the imaging area of ​​the X-ray tube, enabling the identification of a mobile X-ray detector that moves through the predefined portion of the space into the imaging area of ​​the X-ray tube and pairing the mobile X-ray detector with the X-ray tube system. As another example, the predefined portion of the space may be located on a specific side of the imaging area of ​​the X-ray tube, allowing operators of the X-ray system to place a mobile X-ray detector within the predefined portion of the space to pair the mobile X-ray detector with the X-ray tube system.

[0017] According to an embodiment, at least one sensor includes a camera. Specifically, at least one sensor may include a vision camera, such as a color camera, an RGB camera, and / or a monochrome camera and / or a depth camera. In this context, a depth camera is a camera that provides depth information (e.g., a depth map) based on, for example, time-of-flight measurements, triangulation, and / or structured patterns. The camera may also be an infrared or ultraviolet camera. In particular, to perform this method, sensors already present in the X-ray tube system can be used. That is, the vision camera and / or depth camera of the X-ray tube system can be used to identify moving X-ray detectors and for other purposes (e.g., patient identification or patient placement). Therefore, highly efficient sensor use is provided. Sensor data obtained by the camera may include video data and / or still images.

[0018] Alternatively or additionally, at least one sensor includes a radio frequency (RF) sensor. That is, the mobile X-ray detector can be identified using RF signals emitted by or reflected from the mobile X-ray detector.

[0019] Alternatively or alternatively, at least one sensor includes a sound sensor (e.g., a microphone). Using said sound sensor, sound emitted by the mobile X-ray detector can be detected. In this context, the sound can be, for example, audible sound with a frequency between 16 Hz and 20 kHz, but can also be, for example, infrasound and / or ultrasound with frequencies lower or higher than audible sound.

[0020] According to an embodiment, at least one sensor is located in or at the X-ray tube head of the X-ray tube system. In this context, the X-ray tube head includes the X-ray tube and may include additional elements (e.g., at least one sensor). Having at least one sensor placed in or at the X-ray tube head simplifies the process of determining the location of a mobile X-ray detector within a predefined portion of space. Specifically, at least one sensor can be oriented in a direction that is the same as or similar to the line of sight of the X-ray tube. Specifically, for a camera, this means that the camera's line of sight (e.g., the optical axis of the camera's lens system) points in a direction that is the same as or similar to the line of sight of the X-ray tube. In this context, a similar direction can be a direction with a deviation of less than 30°, less than 15°, or less than 5°. In the example, the predefined portion of space can be a portion of the space covered by the camera's image area. Therefore, the mobile X-ray detector in the camera's image area is identified, and the mobile X-ray detector is paired with the X-ray tube system.

[0021] According to an embodiment, the step of identifying a mobile X-ray detector includes identifying a unique identifier in sensor data. The unique identifier uniquely identifies the mobile X-ray detector. This uniqueness can be global (i.e., each unique identifier may be issued only once worldwide) or local (i.e., each unique identifier may be issued only once in a specific environment (e.g., a hospital)). Specifically, to identify a mobile X-ray detector, the unique identifier is identified and located within a predefined portion of space. Scanning of the unique identifier can be easily performed.

[0022] According to an embodiment, the unique identifier is a machine-readable code. As an example, the machine-readable code may be a QR code or barcode, but it may also be a serial number or registration number. The visual code may be permanent, allowing it to withstand clinical cleaning procedures. The machine-readable code may also be provided as raised and recessed areas on a surface for identification by a depth camera. Scanning images for such machine-readable codes is well-known and can be performed using existing software routines. Alternatively or additionally, the unique identifier is a flashing pattern of a light-emitting element. In this context, the light-emitting element may be an LED, a laser, or a light bulb, and may also be referred to as a signaling device. The flashing pattern may include the frequency, duration, and / or color pattern of the emitted light. Also alternatively or additionally, the unique identifier is, for example, an coded radio frequency signal emitted by an RFID tag.

[0023] According to an embodiment, the step of identifying a mobile X-ray detector includes: identifying the mobile X-ray detector in sensor data, determining the characteristics of the mobile X-ray detector based on the sensor data, and identifying the mobile X-ray detector based on the determined characteristics.

[0024] The identification of a moving X-ray detector can be performed, for example, using a neural network (more specifically, a simple deep convolutional neural network). Alternatively, image processing techniques, edge detection techniques, and shape recognition can be used to identify the moving X-ray detector. In particular, the moving X-ray detector can also be identified when it is not fully visible in the image (e.g., when it is partially outside the image and / or partially covered by other objects).

[0025] Machine learning algorithms (e.g., neural networks) or image processing techniques can also be used to perform the operation of determining the characteristics of mobile X-ray detectors. To identify a mobile X-ray detector based on the determined characteristics, the determined characteristics are compared and matched with characteristics in a list of mobile X-ray detectors (particularly mobile X-ray detectors within a specific environment, such as a hospital). In addition to these characteristics, the list also includes identification information of the mobile X-ray detector (e.g., its address in a wireless network).

[0026] In this way, easy-to-use features can be implemented to distinguish mobile X-ray detectors from one another.

[0027] According to an embodiment, the characteristics of a mobile X-ray detector include its size. Therefore, based on this characteristic, X-ray detectors of different sizes can be distinguished from each other. Alternatively or additionally, the characteristics of a mobile X-ray detector include its shape. In this context, the shape may include, for example, the aspect ratio, rounded edges, etc. of the mobile X-ray detector. Alternatively or additionally, the characteristics of a mobile X-ray detector include (e.g., indicated by a model identifier) ​​its model number. To determine these characteristics, images of the mobile X-ray detector can be segmented and / or classified, for example, using a neural network (particularly a fully convolutional neural network trained on real and / or synthetic images of the mobile X-ray detector). Alternatively or additionally, the characteristics of a mobile X-ray detector include at least a label on the mobile X-ray detector. The label may be one of the aforementioned unique identifiers (i.e., machine-readable code, flashing pattern of the light-emitting element, and / or encoded radio frequency signals). Alternatively or additionally, the label may be a marker (particularly a visual marker, e.g., a coloring or sticker). More specifically, the combination of features will uniquely identify the mobile X-ray detector (e.g., the size of the mobile X-ray detector, the shape of the mobile X-ray detector, and the color of the tinting color on the mobile X-ray detector). Alternatively, the features of the mobile X-ray detector may include at least the signals emitted by the mobile X-ray detector (e.g., light signals emitted by the light-emitting elements of the mobile X-ray detector). For example, the light signals may have a specific color or a specific flicker pattern.

[0028] According to an embodiment, between the step of identifying a mobile X-ray detector and the step of determining the characteristics of the mobile X-ray detector, the method further includes: sending an identification command to a candidate mobile X-ray detector via a second wireless communication interface, and having the candidate mobile X-ray detector emit an identification signal in response to the identification command. In this context, the candidate mobile X-ray detector can be any mobile X-ray detector within a specific environment (e.g., within a hospital). Alternatively, the candidate mobile X-ray detector can be identified as a mobile X-ray detector near the X-ray tube system. For example, the mobile X-ray detector can be determined by the strength of the wireless signal emitted by the mobile X-ray detector and received by the X-ray tube system. If the strength of the wireless signal exceeds a predetermined threshold, the corresponding mobile X-ray detector is selected as a candidate mobile X-ray detector. The characteristics of the identification signal are then a portion of the characteristics of the mobile X-ray detector. In particular, the characteristics of the identification signal are the timing of the identification signal. For example, identification commands are sent to the candidate mobile X-ray detectors one after another, with time intervals, for example, between 100 ms. Upon receiving an identification command, the candidate mobile X-ray detector emits an identification signal. Therefore, mobile X-ray detectors can be distinguished from each other by the timing of their identification signals (i.e., which identification command the mobile X-ray detector responds to). In this context, the identification signal can be an optical signal, a radio frequency signal, and / or an audio signal.

[0029] According to an embodiment, identifying a mobile X-ray detector further includes: determining the position of the mobile X-ray detector, and determining whether the mobile X-ray detector is located within a predefined portion of space based on its position. The determination of the position of the mobile X-ray detector can be made by determining its position within an image. Specifically, when at least one sensor includes a camera located in or at the X-ray tube head, the predefined portion of space can be defined as within the image area of ​​the camera, or within a region of the camera's image area. Alternatively or additionally, the position of the mobile X-ray detector can be determined based on image, sound, and / or radio frequency signals using a depth camera and / or via triangulation. The mobile X-ray detector will only be paired with the X-ray tube system if it has been determined that the mobile X-ray detector is located within a predefined portion of space.

[0030] According to an embodiment, at least a portion of the step of identifying a mobile X-ray detector is performed by a neural network. Specifically, the neural network may be a deep convolutional network or a fully convolutional network. For example, the neural network may be used to perform the steps of identifying a mobile X-ray detector in sensor data and / or determining the characteristics of the mobile X-ray detector. The neural network can be trained using real data, augmented data, and / or synthetic data. A properly trained neural network will provide fast and reliable results.

[0031] According to an embodiment, the method further includes providing a confirmation signal after the step of pairing the mobile X-ray detector with the X-ray tube system, more specifically, providing an auditory signal and / or a visual signal. Using the confirmation signal, the operator of the X-ray system is notified that pairing of the mobile X-ray detector with the X-ray tube system has been performed, and that further preparations for taking X-ray images and / or the taking of X-ray images can proceed. The auditory signal may be a predefined sound and / or voice message. The visual signal may be a light signal emitted by the mobile X-ray detector and / or the X-ray tube system, and / or a message on the control screen of the X-ray tube system. Furthermore, the confirmation signal may be different for different mobile X-ray detectors (e.g., having different spacing or different colors for the visual signal). Moreover, the message on the control screen of the X-ray tube system may include information about the paired mobile X-ray detector (e.g., its serial number).

[0032] In another aspect of the invention, an X-ray tube system is provided. The X-ray tube system includes an X-ray tube, at least one sensor, a computing unit, and a wireless communication interface. The X-ray tube system is configured to perform the method according to any one of claims 1 to 12. Therefore, the advantages and details correspond to those given in the foregoing description of the method.

[0033] These and other aspects of the invention will be apparent and elucidated from and with reference to the embodiments described below. Attached Figure Description

[0034] In the following description, preferred embodiments of the invention will be illustrated by way of example only and with reference to the accompanying drawings, in which:

[0035] Figure 1 A schematic side view of the X-ray tube system and the mobile X-ray detector is shown.

[0036] Figure 2 A flowchart illustrating an embodiment of a method for pairing a mobile X-ray detector with an X-ray tube system is shown;

[0037] Figure 3A flowchart illustrating another embodiment of a method for pairing a mobile X-ray detector with an X-ray tube system is shown;

[0038] Figure 4 A flowchart illustrating yet another embodiment of a method for pairing a mobile X-ray detector with an X-ray tube system is shown; and

[0039] Figure 5 A flowchart is shown for yet another embodiment of a method for pairing a mobile X-ray detector with an X-ray tube system.

[0040] In the accompanying drawings, elements corresponding to those already described may have the same reference numerals. Various examples, embodiments, or optional features, whether or not they are indicated as non-limiting, should not be construed as limiting the claimed invention.

[0041] List of text images attached:

[0042] 1 X-ray tube system

[0043] 2. Mobile X-ray detector

[0044] 3 patient stations

[0045] 4 X-ray tube heads

[0046] 5 X-ray tubes

[0047] 6 sensors

[0048] 7 Imaging area of ​​X-ray tube

[0049] 8. Line of sight of the X-ray tube

[0050] 9. Imaging area of ​​the sensor

[0051] 10 methods

[0052] S1 acquires sensor data

[0053] S2 transmits sensor data

[0054] S3 Identifies Mobile X-ray Detectors

[0055] S4 Identify Unique Identifiers

[0056] S5 pairs the mobile X-ray detector with the X-ray tube system.

[0057] S6 Identification of Mobile X-ray Detectors

[0058] S7 Determine Features

[0059] S8 Identifies based on determined features

[0060] S9 sends identification command

[0061] S10 sends an identification signal

[0062] S11 provides an acknowledgment signal

[0063] Q1. Check if a mobile X-ray detector has been detected.

[0064] Q2. Check if the mobile X-ray detector has been paired.

[0065] R1 Ready

[0066] R2 Not ready Detailed Implementation

[0067] Figure 1 A schematic side view of the X-ray tube system 1 and the mobile X-ray detector 2 is shown. It should be understood that the operator will handle the mobile X-ray detector 2 and place it in the correct position to obtain X-ray images of the patient (not shown here, but the patient may be placed on the patient table 3).

[0068] X-ray tube system 1 includes an X-ray tube head 4 having an X-ray tube 5 and a sensor 6 (shown herein as a camera). The camera may be a vision camera and / or a depth camera. Instead of a camera or in addition to a camera, other sensors (such as radio frequency sensors and / or sound sensors) may be used.

[0069] The mobile X-ray detector 2 is an X-ray detector that can be moved (especially between different rooms). As shown here, the mobile X-ray detector 2 can be a portable X-ray detector (i.e., a mobile X-ray detector 2 that can be carried), but it can also be a mobile X-ray detector 2 that is attached to a movable detector bracket.

[0070] The imaging region 7 of the X-ray tube 5 is also shown, wherein the line of sight 9 of the X-ray tube 5 is located at the center of the imaging region 7. The imaging region 9 of the sensor 6 is also shown.

[0071] exist Figure 1 The first wireless communication interface of the X-ray tube system 1, the second wireless communication interface of the mobile X-ray detector 2, and the computing unit of the X-ray tube system are not shown. The first and second wireless communication interfaces are used for communication between the X-ray tube system 1 and the mobile X-ray detector 2.

[0072] In an alternative embodiment, a dedicated X-ray detector is provided, thereby converting the X-ray tube system 1 into an X-ray system. In this case, personnel can choose whether they want to use the dedicated X-ray detector and / or the portable X-ray detector 2.

[0073] The X-ray tube system 1 is configured to perform a method for pairing the mobile X-ray detector 2 with the X-ray tube system 1 provided in the following figures.

[0074] Figure 2 A flowchart of an embodiment of a method 10 for pairing a mobile X-ray detector 2 with an X-ray tube system 1 is shown.

[0075] According to method 10, sensor data S1 is obtained by at least one sensor (particularly sensor 6). Additionally, sensor data S2 is transmitted by at least one sensor 6 to the computing unit of the X-ray tube system 1. Therefore, the computing unit of the X-ray tube system 1 receives sensor data from at least one sensor 6. The transmission and reception of sensor data can be performed using a wired and / or wireless connection. Furthermore, the acquisition, transmission, and reception of sensor data S1, S2, and reception can be periodically (e.g., once per second or multiple times per second). The sensor data can be raw sensor data obtained by at least one sensor 6, or it can be preprocessed by at least one sensor 6.

[0076] Then, the computing unit identifies the mobile X-ray detector 2 located in a predefined part of space based on the received sensor data.

[0077] The predefined portion of the space may include the line of sight 8 of the X-ray tube 5. Therefore, when the mobile X-ray detector 2 is placed within this portion of the space, the mobile X-ray detector 2 is in or near the line of sight 8 of the X-ray tube 5, thus within the portion of the space where the mobile X-ray detector 2 can detect X-rays emitted by the X-ray tube 5. This may be particularly intuitive for operators of the X-ray system, as the mobile X-ray detector 2, placed in the area where it can detect X-rays emitted by the X-ray tube 5, automatically pairs with the X-ray tube system 1. Alternatively or additionally, the predefined portion of the space may include at least a portion of the imaging area 7 of the X-ray tube 5. In this context, the imaging area 7 of the X-ray tube 5 is the area where X-rays emitted by the X-ray tube 5 enter. Therefore, the mobile X-ray detector 2 can also be identified toward the edge of the imaging area 7. Alternatively or additionally, the predefined portion of the space may be adjacent to or near the imaging area 7 of the X-ray tube 5. As an example, a predefined portion of the space may surround the imaging area 7 of the X-ray tube 5, enabling the identification of a mobile X-ray detector 2 that moves through the predefined portion of the space into the imaging area of ​​the X-ray tube and pairing the mobile X-ray detector 2 with the X-ray tube system. As another example, the predefined portion of the space may be located on a specific side of the imaging area of ​​the X-ray tube, allowing operators of the X-ray system to place the mobile X-ray detector within the predefined portion of the space to pair the mobile X-ray detector with the X-ray tube system.

[0078] exist Figure 2 In this embodiment, identifying the mobile X-ray detector 2 (S3) includes identifying a unique identifier (S4) in the sensor data. This unique identifier uniquely identifies the mobile X-ray detector 2. This uniqueness can be global (i.e., each unique identifier may be published only once worldwide) or local (i.e., each unique identifier may be published only once in a specific environment (e.g., a hospital)). Specifically, to identify the mobile X-ray detector 2, the unique identifier is identified and located within a predefined portion of space.

[0079] The unique identifier can be a machine-readable code. As an example, a machine-readable code can be a QR code or barcode, but it can also be a serial number or registration number. The visual code can be permanent, allowing it to withstand clinical cleaning procedures. Machine-readable codes can also be provided as raised and recessed areas on a surface for identification by a depth camera. Scanning images for such machine-readable codes is well-known and can be performed using existing software routines. Alternatively or additionally, the unique identifier is a flashing pattern of a light-emitting element. In this context, the light-emitting element can be an LED, laser, or bulb, and may also be referred to as a signaling device. The flashing pattern can include the frequency, duration, and / or color pattern of the emitted light. Again, alternatively or additionally, the unique identifier is, for example, an coded radio frequency signal emitted by an RFID tag.

[0080] Once the mobile X-ray detector 2 has been identified as being located in a predefined portion of space (S3), it is paired with the X-ray tube system 1 (S5). Pairing (S5) can be performed using a first wireless communication interface of the mobile X-ray detector 2 and a second wireless communication interface of the X-ray tube system 1. Pairing (S5) between the mobile X-ray detector 2 and the X-ray tube system 1 can mean using the X-ray tube system 1 to identify the mobile X-ray detector 2. Specifically, pairing (S5) between the mobile X-ray detector 2 and the X-ray tube system 1 can include configuring the X-ray tube system 1 and / or the mobile X-ray detector 2 such that X-ray images can be obtained using the mobile X-ray detector 2 within the X-ray tube system. More specifically, pairing (S5) between the mobile X-ray detector 2 and the X-ray tube system 1 can include: establishing communication between the X-ray tube system 1 and the mobile X-ray detector 2; configuring the X-ray tube system 1 using the mobile X-ray detector 2 to acquire one or more X-ray images; and / or configuring the mobile X-ray detector 2 using the X-ray tube system 1 to acquire one or more X-ray images. This automatic pairing S5 between the mobile X-ray detector 2 and the X-ray tube system 1 significantly improves the workflow for pairing the mobile X-ray detector 2 with the X-ray tube system 1. Specifically, no additional manual interaction is required to perform pairing S5, saving time for operators of the X-ray system. More specifically, the workflow for operating the X-ray tube system 1 using the mobile X-ray detector 2 can become more natural and fluid. Moreover, using the described method, changing the mobile X-ray detector 2 paired with the X-ray tube system 1 is simple and quick. Furthermore, no dedicated additional hardware is required to perform the pairing S5 between the mobile X-ray detector 2 and the X-ray tube system 1. Furthermore, the described method provides increased reliability because it is less likely to pair the X-ray tube system 1 with the incorrect mobile X-ray detector 2 using the described method.

[0081] Once the mobile X-ray detector 2 has been paired with the X-ray tube system 1, a confirmation signal can be provided. This confirmation signal can be an audible signal and / or a visual signal. Using this confirmation signal, the operator of the X-ray system is notified that pairing of the mobile X-ray detector 2 with the X-ray tube system 1 has been completed, and that further preparations for taking X-ray images and / or the taking of X-ray images can proceed. The audible signal can be a predefined sound and / or voice message. The visual signal can be a light signal emitted by the mobile X-ray detector 2 and / or the X-ray tube system 1, and / or a message on the control screen of the X-ray tube system 1. Furthermore, the confirmation signal can be different for different mobile X-ray detectors 2 (e.g., with different spacing or different colors of visual signals). Moreover, the messages on the control screen of the X-ray tube system 1 can include information about the paired mobile X-ray detector 2 (e.g., its serial number).

[0082] Figure 3 A flowchart of another embodiment of a method 10 for pairing a mobile X-ray detector 2 with an X-ray tube system 1 is shown. In this embodiment, identifying the mobile X-ray detector 2 (S3) includes identifying the mobile X-ray detector 2 in sensor data (S6). This identification (S6) can be performed, for example, using a neural network (more specifically, a simple deep convolutional neural network). Alternatively, image processing techniques, edge detection techniques, and shape recognition can be used to identify the mobile X-ray detector 2. Specifically, the mobile X-ray detector 2 can also be identified when it is not fully visible in the image (e.g., when it is partially outside the image and / or partially covered by other objects). In particular, along with the process of identifying the mobile X-ray detector 2 (S6), the position of the mobile X-ray detector 2 can be determined. Based on the position of the mobile X-ray detector 2, it is then determined whether the mobile X-ray detector 2 is located within a predefined portion of space. This determination of the position of the mobile X-ray detector 2 can be made by determining its position within the image. Specifically, when at least one sensor 6 includes a camera located in or at the X-ray tube head 4, the predefined portion of the space can be defined as within the camera's image area, or within a region of the camera's image area. Alternatively or additionally, the position of the mobile X-ray detector 2 can be determined based on image, sound, and / or radio frequency signals using a depth camera and / or via triangulation. The mobile X-ray detector 2 will only be paired with the X-ray tube system 1 once it has been determined that the mobile X-ray detector 2 is located within the predefined portion of the space.

[0083] In this embodiment, identifying the S3 mobile X-ray detector 2 also includes determining the characteristics of the S7 mobile X-ray detector 2 based on sensor data. Machine learning algorithms (e.g., neural networks) or image processing techniques can be used to perform the operation of determining the characteristics of the S7 mobile X-ray detector 2. The characteristics of the mobile X-ray detector 2 may include the size of the mobile X-ray detector 2. Therefore, based on this characteristic, mobile X-ray detectors 2 with different sizes can be distinguished from each other. Alternatively or additionally, the characteristics of the mobile X-ray detector 2 may include the shape of the mobile X-ray detector 2. In this context, the shape may include, for example, the aspect ratio, rounded edges, etc., of the mobile X-ray detector 2. Alternatively or additionally, the characteristics of the mobile X-ray detector 2 may include (e.g., indicated by a model identifier) ​​the model number of the mobile X-ray detector 2. To determine these characteristics, the image of the mobile X-ray detector 2 can be segmented and / or classified, for example, by a neural network (particularly a fully convolutional neural network already trained on real and / or synthetic images of the mobile X-ray detector). Alternatively or additionally, the characteristics of the mobile X-ray detector 2 may at least include a label on the mobile X-ray detector 2. The label may be one of the aforementioned unique identifiers (i.e., machine-readable code, flashing pattern of the light-emitting element, and / or encoded radio frequency signal). Alternatively or additionally, the label may be a marker (particularly a visual marker, such as a coloring or sticker). More specifically, a combination of features may be used (e.g., the size of the mobile X-ray detector 2, the shape of the mobile X-ray detector 2, and the color of the coloring on the mobile X-ray detector 2). Alternatively, the features of the mobile X-ray detector 2 may include at least a signal emitted by the mobile X-ray detector 2 (e.g., a light signal emitted by the light-emitting element of the mobile X-ray detector 2). For example, the light signal may have a specific color or a specific flashing pattern.

[0084] Finally, identifying the S3 mobile X-ray detector 2 also includes identifying the S8 mobile X-ray detector 2 based on the determined characteristics. To do this, the determined characteristics are compared and matched with characteristics in a list of mobile X-ray detectors 2 (particularly mobile X-ray detectors 2 within a specific environment, such as a hospital). In addition to these characteristics, the list also includes identification information of the mobile X-ray detector 2 (e.g., its address in a wireless network).

[0085] Figure 4A flowchart of another embodiment of a method 10 for pairing a mobile X-ray detector 2 with an X-ray tube system 1 is shown. In this embodiment, after identifying the mobile X-ray detector 2 (S6), the X-ray tube system 1 sends an identification command (S9) to a candidate mobile X-ray detector 2 via a second wireless communication interface. The candidate mobile X-ray detector 2 can be any mobile X-ray detector 2 within a specific environment (e.g., within a hospital). Alternatively, the candidate mobile X-ray detector 2 can be identified as a mobile X-ray detector 2 near the X-ray tube system 1. For example, the mobile X-ray detector 2 can be determined by the strength of the wireless signal emitted by the mobile X-ray detector 2 and received by the X-ray tube system 1. If the strength of the wireless signal exceeds a predetermined threshold, the corresponding mobile X-ray detector 2 is selected as a candidate mobile X-ray detector 2.

[0086] Once the mobile X-ray detector 2 receives an identification command, it emits an identification signal (S10) in response. The identification signal is then characterized by a portion of the features of the mobile X-ray detector 2 used for identification (S8). Specifically, this characteristic is the timing of the identification signal. For example, identification commands are sent one after another to the candidate mobile X-ray detectors 2, with time intervals, for example, between 100 ms. Upon receiving an identification command, the candidate mobile X-ray detector 2 emits an identification signal. Therefore, the mobile X-ray detectors 2 can be distinguished from each other by the timing of their identification signals (i.e., which identification command the mobile X-ray detector 2 responds to). In this context, the identification signal can be an optical signal, a radio frequency signal, and / or an audio signal.

[0087] Figure 5 A flowchart of another embodiment of a method 10 for pairing a mobile X-ray detector 2 with an X-ray tube system 1 is shown. After the step of identifying the mobile X-ray detector 2 in step S6, a query is made to determine whether the mobile X-ray detector 2 has been detected (i.e., whether the mobile X-ray detector 2 is present in a predefined portion of space).

[0088] If a mobile X-ray detector 2 is present, method 10 proceeds to determine the characteristics of the mobile X-ray detector 2 (S7), identify the mobile X-ray detector 2 based on the determined characteristics (S8), and pair the mobile X-ray detector 2 with the X-ray tube system 1 (S5). Once pairing (S5) is successfully completed, a confirmation signal (S11) is provided, and the X-ray system is ready (R1) (e.g., ready for medical examination).

[0089] On the other hand, if query Q1 determines that the mobile X-ray detector 2 does not exist, then query Q2 checks whether the mobile X-ray detector 2 has been paired with the X-ray tube system 1. If the mobile X-ray detector 2 has been paired with the X-ray tube system 1, then the X-ray system is ready (R1). In this case, the mobile X-ray detector 2 may be hidden from the patient, for example, placed under the patient. However, if the mobile X-ray detector 2 has not been paired with the X-ray tube system 1, then the X-ray system is not ready (R2).

[0090] Although the invention has been described and illustrated in detail in the accompanying drawings and the foregoing description, such description and illustration are to be regarded as illustrative or exemplary rather than restrictive; the invention is not limited to the disclosed embodiments.

[0091] By studying the accompanying drawings, the disclosure, and the appended claims, those skilled in the art can understand and implement other variations of the disclosed embodiments. In the claims, the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude multiple. The mere fact that certain measures are described in dissimilar dependent claims does not indicate that combinations of these measures cannot be advantageously used. No reference numerals in the claims should be construed as limiting the scope.

Claims

1. A method (10) for pairing a mobile X-ray detector (2) with an X-ray tube system (1), wherein, The mobile X-ray detector (2) includes a first wireless communication interface, and the X-ray tube system (1) includes an X-ray tube (5), at least one sensor (6), a computing unit, and a second wireless communication interface. The method (10) includes: (S1) Sensor data is obtained from the at least one sensor (6); The sensor data is transmitted (S2) from the at least one sensor (6) to the computing unit; The computing unit identifies (S3) the mobile X-ray detector (2) located in a predefined portion of space based on the received sensor data; and If it has been determined that the mobile X-ray detector (2) is located within the predefined portion of the space, the computing unit pairs the mobile X-ray detector (2) with the X-ray tube system (1) via the second wireless communication interface and via the first wireless communication interface (S5).

2. The method (10) according to claim 1, wherein, The predefined portion of the space includes at least a portion of the line of sight (8) of the X-ray tube (5) and / or the imaging area (7) of the X-ray tube (5), and / or adjacent to or close to the imaging area (7) of the X-ray tube (5).

3. The method (10) according to claim 1 or 2, wherein, The at least one sensor (6) includes a camera, a radio frequency sensor and / or a sound sensor.

4. The method (10) according to claim 3, wherein, The camera includes a vision camera and / or a depth camera.

5. The method (10) according to claim 1 or 2, wherein, The at least one sensor (6) is located in or at the X-ray tube head (4) of the X-ray tube system (1).

6. The method (10) according to claim 5, wherein, The at least one sensor is oriented in the same or similar direction as the line of sight (8) of the X-ray tube (5).

7. The method (10) according to claim 1 or 2, wherein, The step of identifying (S3) the mobile X-ray detector (2) includes identifying (S4) a unique identifier in the sensor data.

8. The method (10) according to claim 7, wherein, The unique identifier is machine-readable code, the blinking pattern of the light-emitting element, and / or an encoded radio frequency signal.

9. The method (10) according to claim 1 or 2, wherein, The steps of identifying (S3) the mobile X-ray detector (2) include: Identify the mobile X-ray detector (2) in the sensor data (S6); The characteristics of the mobile X-ray detector (2) are determined based on sensor data (S7); and The mobile X-ray detector (2) is identified based on the determined characteristics (S8).

10. The method (10) according to claim 9, wherein, The features of the mobile X-ray detector (2) include: the size of the mobile X-ray detector (2), the shape of the mobile X-ray detector (2), the model of the mobile X-ray detector (2), at least one label on the mobile X-ray detector (2) and / or at least one signal emitted by the mobile X-ray detector (2).

11. The method (10) according to claim 10, wherein, The signal includes an optical signal.

12. The method (10) according to claim 9, wherein, Between the step of identifying (S6) the mobile X-ray detector (2) and the step of determining (S7) the characteristics of the mobile X-ray detector (2), the method (10) further includes: The second wireless communication interface sends an identification command (S9) to the candidate mobile X-ray detector (2); and The candidate mobile X-ray detector (2) issues an identification signal (S10) in response to the identification command. The features of the mobile X-ray detector (2) include the features of the identification signal.

13. The method (10) according to claim 12, wherein, The characteristics of the identification signal include the timing of the identification signal.

14. The method (10) according to claim 1 or 2, wherein, Identifying (S3) the mobile X-ray detector (2) further includes: determining the position of the mobile X-ray detector (2), and determining whether the mobile X-ray detector (2) is located within the predefined portion of the space based on the position of the mobile X-ray detector (2).

15. The method (10) according to claim 1 or 2, wherein, At least part of the step of identifying (S3) the mobile X-ray detector (2) is performed by a neural network.

16. The method (10) according to claim 15, wherein, The neural network includes a deep convolutional neural network.

17. The method (10) according to claim 1 or 2, further comprising the step of pairing the mobile X-ray detector (2) with the X-ray tube system (1) (S5): Provide (S11) confirmation signal.

18. The method (10) according to claim 17, wherein, The confirmation signal includes auditory signals and / or visual signals.

19. An X-ray tube system (1), comprising X-ray tube (5); At least one sensor (6); Computing unit; and Wireless communication interface, in, The X-ray tube system (1) is configured to perform the method (10) according to any one of claims 1 to 18.

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