JP6373004B2 - Radiation imaging system and control method thereof - Google Patents

Description

  The present invention relates to a radiation imaging system that performs radiation imaging of a subject and a control method thereof. In this specification, an example in which X-rays are applied as radiation according to the present invention will be described. However, in the present invention, not only the X-rays but also α-rays, β-rays, γ-rays, etc. Other radiation can also be applied.

  In recent years, digital images have become common in X-ray images for observing the internal structure of a subject obtained by imaging the spatial distribution of the X-ray intensity of X-rays transmitted through the subject such as a human body or an object. ing. In particular, in the field of medical and non-destructive inspection, a flat panel detector (hereinafter referred to as “FPD”) is used as an X-ray image detector for acquiring a digital image for observing the internal structure of a relatively large subject. Is used). With this FPD, a digital X-ray image obtained by digitizing a wide range of X-ray intensity distribution can be obtained.

  A common feature of digital images is that image information can be transmitted accurately and at high speed without damage. In addition, with the recent development of wireless technology, digital X-ray image data acquired with a battery-operated portable FPD can be wirelessly transmitted to a computer system for observing, storing, and managing the data. A high degree of X-ray imaging is possible.

  In recent years, X-ray imaging systems using a plurality of portable FPDs have also been proposed, for example, as disclosed in Patent Documents 1 to 3 below, due to the simplification of handling and cost reduction of portable FPDs. .

  Further, for example, as disclosed in Patent Document 4 below, X-ray imaging is performed by automatically detecting generated X-rays without connecting an X-ray generator and a synchronization signal line of a portable FPD. It is also possible to do.

Japanese Patent No. 4708559 JP 2011-235093 A JP 2000-350718 A Japanese Patent Laid-Open No. 11-155847

  In Patent Documents 1 to 3 described above, since it is necessary to synchronize the timing of the X-ray generation and the timing of the FPD operation, the synchronization signal output from the X-ray generator at the timing immediately before the X-ray generation is used. It needs to be transmitted to a specific FPD. Therefore, although a plurality of FPDs can be used in one X-ray imaging system, one of the usable FPDs desired by the user must be selected each time. And when changing FPD to be used, user operation for selecting FPD anew is needed.

  In Patent Document 4 described above, since it is necessary to set the portable FPD to an X-ray detectable state (hereinafter referred to as “activated state”), the portable FPD to be used is selected as described above. There is a need.

  The present invention has been made in view of such problems, and an object of the present invention is to avoid complication of control by the radiation imaging system in a radiation imaging system including a plurality of radiation image detectors. To do.

The radiation imaging system of the present invention includes a plurality of radiation image detectors that detect radiation transmitted through a subject to obtain a radiation image, a control unit that controls the plurality of radiation image detectors, and the plurality of radiations. and a communication unit for transmitting the first radiation image detector of the image detector transitions to radiation detectable state to a second radiation image detector, the pre-Symbol second radiation image detector, The communication unit receives a notification that the first radiation image detector has transitioned to a radiation detectable state, and then transitions to a radiation detectable state with a predetermined time delay, and the first radiation image detector waits. When transitioning to a state, the radiation detection is possible .
The present invention also includes a control method for the radiation imaging system described above.

  ADVANTAGE OF THE INVENTION According to this invention, complication of control by the said radiography system can be avoided in the radiography system comprised including the some radiographic image detector.

1 is a diagram illustrating an example of a schematic configuration of an X-ray imaging system (radiation imaging system) according to a first embodiment of the present invention. It is a figure which shows an example of schematic structure of FPD shown in FIG. It is a figure which shows an example of schematic structure of the system control part shown in FIG. It is a schematic diagram which shows an example of the state transition of FPD shown in FIG. It is a sequence diagram which shows an example of the information communication content between the system control part shown in FIG. 1, 1st FPD, and 2nd FPD. It is a figure for demonstrating the display and operation on the monitor shown in FIG. It is a flowchart which shows an example of the process sequence in the control method of the X-ray imaging system (radiography system) which concerns on the 1st Embodiment of this invention. It is a figure which shows an example of a data structure of the X-ray image data transmitted to a system control part from 1st FPD or 2nd FPD shown in FIG. It is a figure which shows an example of schematic structure of the X-ray imaging system (radiography system) which concerns on the 2nd Embodiment of this invention. It is a figure which shows an example of schematic structure of the X-ray imaging system (radiography system) which concerns on the 3rd Embodiment of this invention. It is a figure which shows the 4th Embodiment of this invention and shows an example of schematic structure of FPD shown in FIG. It is a figure which shows an example of schematic structure of the X-ray imaging system (radiography system) which concerns on the 5th Embodiment of this invention. It is a figure which shows an example of schematic structure of the X-ray imaging system (radiography system) which concerns on the 6th Embodiment of this invention.

  Hereinafter, embodiments (embodiments) for carrying out the present invention will be described with reference to the drawings.

(First embodiment)
First, a first embodiment of the present invention will be described.

FIG. 1 is a diagram illustrating an example of a schematic configuration of an X-ray imaging system (radiation imaging system) 100 according to the first embodiment of the present invention.
As shown in FIG. 1, the X-ray imaging system 100 according to the present embodiment includes an X-ray generation unit 110, FPDs 120-1 to 120-2 that are a plurality of radiation image detectors, an X-ray generation control unit 130, and an X-ray. The irradiation button 140 and the system control unit 150 are included.

  In the X-ray imaging system 100 shown in FIG. 1, an example in which two FPDs 120-1 to 120-2 are provided as a plurality of radiation image detectors is shown, but the present embodiment is limited to this. It is not a thing. For example, a form in which three or more FPDs 120 are provided as a plurality of radiation image detectors may be used. Moreover, in the following description, the case common to the first FPD 120-1 (first radiation image detector) and the second FPD 120-2 (second radiation image detector) is simply “FPD 120”. Will be described.

  The X-ray generation unit (radiation generation unit) 110 irradiates the subject H with X-rays 111 as a kind of radiation based on the control of the X-ray generation control unit 130. The X-ray generation unit 110 includes, for example, an X-ray source (X-ray tube) that generates X-rays under voltage control from the X-ray generation control unit 130, and an irradiation region of X-rays generated from the X-ray source. A collimator or the like for controlling the above.

  The X-ray 111 that has passed through the subject H enters the FPD 120. The FPD 120 is provided with a two-dimensional sensor in which pixels having sensitivity to X-rays are arranged in a two-dimensional matrix. The two-dimensional sensor detects the incident X-ray 111 and detects X-ray image data (radiation). Image data). Specifically, in each pixel of the two-dimensional sensor, charges corresponding to the X-ray dose of incident X-rays are accumulated, and X-ray image data can be generated by reading out the charges accumulated in each pixel. . More specifically, the two-dimensional sensor of the FPD 120 detects the incident X-ray 111 and generates X-ray image data corresponding to the intensity distribution of the X-ray 111.

Here, in the X-ray imaging system 100 shown in FIG. 1, the first FPD 120-1 and the second FPD 120-2 may be, for example, a portable FPD.
The first FPD 120-1 includes an imaging preparation completion display unit (ready lamp) 120-11 indicating whether or not X-ray imaging is possible (that is, a state where preparation for radiation imaging has been completed), and communication. A wireless communication status display unit (link lamp) 120-12 indicating the status is provided.
The second FPD 120-2 includes an imaging preparation completion display unit (ready lamp) 120-21 that indicates whether or not X-ray imaging is possible (that is, a state where preparation for radiation imaging has been completed), and communication. A wireless communication status display unit (link lamp) 120-22 indicating the status is provided.

  The X-ray generation control unit (radiation generation control unit) 130 performs X-rays from the X-ray generation unit 110 to the subject H at the timing when the X-ray irradiation button 140 is operated based on the control of the system control unit 150. Control to irradiate 111 is performed.

  The X-ray irradiation button (radiation irradiation button) 140 is a button operated when the operator performs X-ray imaging of the subject H.

The system control unit 150 comprehensively controls operations in the X-ray imaging system 100. For example, the system control unit 150 performs control to acquire X-ray image data from each FPD 120 by communicating with each FPD (each radiation image detector) 120 in the plurality of FPDs 120-1 to 120-2. Then, the system control unit 150 manages the X-ray image data acquired from each FPD 120 according to inspection information such as an inspection ID.
The system control unit 150 includes a PC (personal computer) 150a, an access point 150b, and a monitor 150c. In this example, the access point 150 b is configured as one configuration of the system control unit 150, but may be provided as a configuration independent of the system control unit 150 without being configured as one configuration of the system control unit 150.

  The PC 150a controls the overall operation of the X-ray imaging system 100, and is connected to an X-ray generation control unit 130, an access point 150b, and a monitor 150c.

  The access point 150b communicates with the first FPD 120-1 and the second FPD 120-2 through a wireless LAN. The main communication contents here are to transmit X-ray image data generated by each FPD 120 from each FPD 120 to the PC 150a, and to transmit information (status information) related to the state of each FPD 120 from each FPD 120 to the PC 150a. And transmitting a control command (state transition instruction command) for controlling each FPD 120 from the PC 150a to each FPD 120.

  Here, since the first FPD 120-1 and the second FPD 120-2 function as members of a wireless LAN environment by the access point 150b, each is a physical address (MAC address: Media Access Control address) in the wireless LAN. Differentiated and independent communication is possible. Note that the wireless communication method used here is not limited to wireless LAN communication. For example, in addition to using Bluetooth (registered trademark) standard communication or the like, it can be realized by an original wireless communication method such as ad hoc communication. The same effect as in the case of wireless LAN communication can be obtained.

  In addition, it should be noted that status information is communicated between the first FPD 120-1 and the second FPD 120-2. Physically, the wireless LAN environment through the access point 150b is used. Done in In the following description, communication between the FPDs 120 is expressed.

  In the present embodiment, the communication method between the PC 150a and the first FPD 120-1 and the second FPD 120-2 is wireless communication via the access point 150b. It is not limited to communication. For example, a form in which the PC 150a and the first FPD 120-1 and the second FPD 120-2 are connected by wire to perform wired communication is also applicable to the present invention. Similarly, in the communication between the FPDs 120, a form in which the first FPD 120-1 and the second FPD 120-2 are connected by wire to perform wired communication is also applicable to the present invention.

  The monitor 150c has a graphical user interface (GUI) function, for example, an operation button realized by a touch panel and a function of displaying various information. The monitor 150c displays an X-ray image based on the X-ray image data generated by the first FPD 120-1 and the second FPD 120-2 for the operator based on the control of the PC 150a.

Next, a schematic configuration (internal configuration) of the FPD 120 illustrated in FIG. 1 will be described.
FIG. 2 is a diagram showing an example of a schematic configuration of the FPD 120 shown in FIG.

  As shown in FIG. 2, the FPD 120 includes a CPU 121, a storage unit 122, a power supply 123, a two-dimensional sensor 124, a display unit 125, an operation unit 126, a communication interface (communication I / F) 127, and a bus 128. It is configured.

The CPU 121 controls the operation of the FPD 120 using programs, data, and information stored in the storage unit 122, for example.
The storage unit 122 stores, for example, an operating system (OS), a program executed by the CPU 121, and data and information known in the FPD 120.
The power source 123 supplies power for operating the FPD 120.
The two-dimensional sensor 124 is a pixel in which pixels having sensitivity to X-rays are arranged in a two-dimensional matrix. The two-dimensional sensor 124 generates X-ray image data based on the incident X-ray 111. Specifically, in each pixel of the two-dimensional sensor, charges corresponding to the X-ray dose of incident X-rays are accumulated, and X-ray image data can be generated by reading out the charges accumulated in each pixel. .
The display unit 125 displays various information based on the control of the CPU 121, for example.
The operation unit 126 is an input device configured to be operated by an operator.
The communication I / F 127 controls transmission / reception of various data, various information, various signals, and the like performed between the FPD 120 and an external device. Here, examples of the external device include another FPD 120 and a system control unit 150.
The bus 128 connects the CPU 121, the storage unit 122, the power supply 123, the two-dimensional sensor 124, the display unit 125, the operation unit 126, and the communication I / F 127 so that they can communicate with each other.
Here, for example, from the display unit 125 shown in FIG. 2, the imaging preparation completion display units (ready lamps) 120-11 and 120-21, and the wireless communication status display unit (link lamp) 120-12 shown in FIG. 120-22 is configured.

Next, a schematic configuration of the system control unit 150 illustrated in FIG. 1 will be described.
FIG. 3 is a diagram illustrating an example of a schematic configuration of the system control unit 150 illustrated in FIG. 1.

  As shown in FIG. 3, the system control unit 150 includes a CPU 151, a storage unit 152, a power supply 153, a display unit 154, an operation unit 155, a communication interface (communication I / F) 156, and a bus 157. ing.

The CPU 151 controls the operation of the system control unit 150 using programs, data, and information stored in the storage unit 152, for example.
The storage unit 152 stores, for example, an operating system (OS), a program executed by the CPU 151, and data and information that are already known in the system control unit 150.
The power source 153 supplies power for operating the system control unit 150.
The display unit 154 displays various images, various information, and the like based on the control of the CPU 151, for example.
The operation unit 155 is an input device configured to be operable by the operator.
The communication I / F 156 controls transmission / reception of various data, various information, various signals, and the like performed between the system control unit 150 and an external device. Here, as the external device, an FPD 120 or the like can be cited.
The bus 157 connects the CPU 151, the storage unit 152, the power supply 153, the display unit 154, the operation unit 155, and the communication I / F 156 so that they can communicate with each other.
Here, for example, the PC 151 shown in FIG. 1 includes the CPU 151, the storage unit 152, and the power source 153 shown in FIG. 3. Further, for example, the access point 150b shown in FIG. 1 is configured from the communication I / F 156 shown in FIG. Further, for example, the monitor 150c includes the display unit 154 and the operation unit 155 shown in FIG.

Next, state transition of the FPD 120 shown in FIG. 1 will be described.
FIG. 4 is a schematic diagram showing an example of state transition of the FPD 120 shown in FIG.

  In FIG. 4, a state 401 is a “power-off state” before the power source 123 is turned on, a state 402 is a “standby state” waiting for a command with low power consumption, and a state 403 is an X-ray detectable state (radiation) This represents an “activated state” that is a detectable state. Here, each FPD 120 in the plurality of FPDs 120-1 to 120-2 shown in FIG. 1 can transition to the activated state independently of the control by the system control unit 150 and can communicate with each other. It is configured.

  Further, in FIG. 4, a state 404 is an “X dose (charge) accumulation / reading state” in which X-ray image data is read from the two-dimensional sensor 124, and a state 405 is an X obtained from the two-dimensional sensor 124. This is an “X-ray image data transmission state” in which line image data is being transmitted to the system control unit 150.

  The initial state of the FPD 120 shown in FIG. 4 is a power-off state 401. If there is a power-on 406 in this state, the state transits to a standby state 402 and waits for a command. If there is a power shut-off 407 in this standby state 402, it returns to the power off state 401.

  In the standby state 402, the state transits to the activated state 403 as a predetermined time elapses. Here, the predetermined time required for the transition to the activated state 403 is, for example, a time represented by T2 or T3 depending on the condition setting. That is, in the standby state 402, the transition is made to the activated state 403 by the automatic transition 408 after T2 / T3 time.

In the activated state 403, since dark current is accumulated, if the X-ray irradiation is not performed for a predetermined time, the process returns to the standby state 402. Here, the predetermined time required for the transition to the standby state 402 is, for example, a time represented by T1 depending on the condition setting. That is, in the activated state 403, the state transits to the standby state 402 by the automatic transition 409 after the time T1.
In the activated state 403, if there is a power shutdown 410, the power off state 401 is restored.

  In the activated state 403, if there is an X-ray irradiation detection 411 by the two-dimensional sensor 124, the state transits to the X-ray dose (charge) accumulation / readout state 404. In the X-ray dose (charge) accumulation / reading state 404, when reading is completed 412, the state transits to the X-ray image data transmission state. In this X-ray image data transmission state, when the X-ray image data transmission is completed 413, the process returns to the standby state 402.

Next, information communication contents between the system control unit 150, the first FPD 120-1, and the second FPD 120-2 shown in FIG. 1 will be described.
FIG. 5 is a sequence diagram illustrating an example of information communication contents between the system control unit 150, the first FPD 120-1, and the second FPD 120-2 illustrated in FIG. Here, when the system control unit 150 performs information communication with the first FPD 120-1 and the second FPD 120-2, the CPU 151 is mainly used via the communication I / F 156 (access point 150b). The information communication process is performed. In addition, when the first FPD 120-1 performs information communication with the system control unit 150 and the second FPD 120-2, the CPU 121 mainly performs the information communication processing and the like via the communication I / F 127. Do. In addition, when the second FPD 120-2 performs information communication with the system control unit 150 and the first FPD 120-1, the CPU 121 mainly performs the information communication processing and the like via the communication I / F 127. Do.

  A sequence 501 is a sequence showing an operation of the system control unit 150 shown in FIG. The sequence 502 is a sequence showing the operation of the first FPD 120-1 shown in FIG. 1, and the sequence 503 is a sequence showing the operation of the second FPD 120-2 shown in FIG. In the description of the sequence diagram shown in FIG. 5, the part to be described is represented by a numerical value (for example, <s001>) surrounded by <> in FIG.

First, in the first FPD 120-1, when the power supply 123 is turned on (<s001>), the CPU 121 of the first FPD 120-1 detects this. Then, the CPU 121 of the first FPD 120-1 performs initialization processing such as activation of a control microcomputer in the first FPD 120-1 (<s003>). Thereafter, the CPU 121 of the first FPD 120-1 performs a process of setting the operation state of the first FPD 120-1 to the standby state (<s009>).
Similarly, when the power supply 123 is turned on in the second FPD 120-2 (<s002>), the CPU 121 of the second FPD 120-2 detects this. Then, the CPU 121 of the second FPD 120-2 performs initialization processing such as activation of a control microcomputer in the second FPD 120-2, for example (<s004>). Thereafter, the CPU 121 of the second FPD 120-2 performs processing for setting the operation state of the second FPD 120-2 to the standby state (<s010>).

  When the first FPD 120-1 and the second FPD 120-2 are in a so-called wireless LAN environment in a range where radio waves of the access point 150b of the system control unit 150 reach, the first FPD 120-1 and the second FPD 120- The CPU 121 of 2 performs a process of receiving a beacon signal periodically transmitted by the access point 150b in units of several tens to several hundreds of milliseconds via the communication I / F 127 (<s005>).

When receiving the beacon signal from the system control unit 150, the CPU 121 of the first FPD 120-1 performs a process of transmitting a connection request signal (connection request command) to the system control unit 150 (<s006>). Specifically, the CPU 121 of the first FPD 120-1 confirms that it is a predetermined wireless LAN ID (Service Set Identifier: SSID), and then performs system control at the corresponding radio frequency through measures such as password authentication. Processing to transmit a connection request command including the MAC address to the unit 150 is performed.
When the CPU 151 of the system control unit 150 receives the connection request signal (connection request command) from the first FPD 120-1, the CPU 151 performs a process of transmitting a connection permission signal to the first FPD 120-1 (<s007>). ).
When the CPU 121 of the first FPD 120-1 receives the connection permission signal from the system control unit 150, the CPU 121 performs a wireless communication state display (hereinafter, “link lamp”) lighting process indicating that the wireless communication connection operation is completed. . As a result, the operator can know that the first FPD 120-1 is in a communicable state. Thereafter, the CPU 121 of the first FPD 120-1 performs processing for notifying the system control unit 150 of the standby state (<s008>).
When the CPU 151 of the system control unit 150 receives a notification of the standby state from the first FPD 120-1, the CPU 151 registers the first FPD 120-1 as being available.

Similarly to the information communication contents (<s005> to <s008>) in the first FPD 120-1, information communication is also performed in the second FPD 120-2.
Specifically, first, when the CPU 121 of the second FPD 120-2 receives a beacon signal from the system control unit 150, the CPU 121 performs a process of transmitting a connection request signal (connection request command) to the system control unit 150. (<S011>). Specifically, the CPU 121 of the second FPD 120-2 confirms that it is a predetermined wireless LAN ID (SSID), and then performs processing such as password authentication to the system controller 150 at the wireless frequency. To transmit a connection request command including the MAC address.
When receiving the connection request signal (connection request command) from the second FPD 120-2, the CPU 151 of the system control unit 150 performs a process of transmitting a connection permission signal to the second FPD 120-2 (<s012>). ).
Then, when the CPU 121 of the second FPD 120-2 receives the connection permission signal from the system control unit 150, the CPU 121 performs a link lamp lighting process indicating that the wireless communication connection operation is completed. As a result, the operator can know that the second FPD 120-2 is in a communicable state. Thereafter, the CPU 121 of the second FPD 120-2 performs processing for notifying the system control unit 150 of the standby state (<s013>).
When receiving the notification of the standby state from the second FPD 120-2, the CPU 151 of the system control unit 150 performs a process of registering that the second FPD 120-2 is in an available state.

  Subsequently, as described above with reference to FIG. 4, the CPU 121 of the first FPD 120-1 waits for a predetermined time and performs a process of automatically transitioning the operation state of the first FPD 120-1 to the activated state (< s014>). Then, the CPU 121 of the first FPD 120-1 performs a process of setting the activated state duration T1 (<s018>). At this time, the CPU 121 of the first FPD 120-1 performs processing for notifying the system control unit 150 that the first FPD 120-1 is in an activated state (<s015>). The CPU 121 of the first FPD 120-1 also notifies the second FPD 120-2 that the first FPD 120-1 is in an activated state substantially simultaneously with the notification to the system control unit 150. The notification process is performed (<s016>).

  When the CPU 151 of the system control unit 150 receives a notification from the first FPD 120-1 that it is in the activated state, the CPU 151 represents the contents of the X-ray imaging examination that the first FPD 120-1 can know in advance. A process of notifying the inspection ID as inspection information is performed (<s017>). The examination ID is returned from the first FPD 120-1 to the system control unit 150 together with the image information obtained by the X-ray imaging after the X-ray imaging by the first FPD 120-1. Then, the CPU 151 of the system control unit 150 performs processing for confirming that the captured image data is intended X-ray image data based on the inspection ID returned from the first FPD 120-1.

  Here, an example of the inspection ID is given as the inspection information transmitted from the system control unit 150 to the first FPD 120-1. However, the inspection information is not limited to the inspection ID, and any information may be used as long as the information is related to the X-ray imaging inspection. Is also acceptable. Examples of the information related to the X-ray imaging examination include, in addition to the examination ID, the patient name, the patient's birthday, the examination name, the imaging part, the operator name in charge, the physical parameters related to the X-ray imaging conditions (radiation imaging conditions), and the like. Can be mentioned. Then, by including the above-described information together with the inspection ID as the inspection information returned from the first FPD 120-1 to the system control unit 150, it is possible to check the correctness of the captured image data in more detail.

  Further, when the CPU 121 of the second FPD 120-2 receives the notification (<s016>) indicating that it is in the activated state from the first FPD 120-1, the delay time T3 as a predetermined time until the transition to the activated state. Is set (<s019>). Then, when the delay time T3 has elapsed, the CPU 121 of the second FPD 120-2 performs a transition process that activates the operation state of the second FPD 120-2 (<s020>). At this time, the CPU 121 of the second FPD 120-2 performs a process of setting the activated state duration T1 (<s026>). Further, the CPU 121 of the second FPD 120-2 performs a process of notifying the first FPD 120-1 that the second FPD 120-2 is in an activated state (<s021>) and the system Processing for notifying the control unit 150 is performed (<s022>).

  When the CPU 151 of the system control unit 150 receives a notification from the second FPD 120-2 that it is in the activated state, the CPU 151 notifies the second FPD 120-2 of the above-described inspection ID in the same manner as in <s017>. Is performed (<s023>).

  Further, when the X-ray imaging is not performed within the activation state duration T1 set in <s018>, the CPU 121 of the first FPD 120-1 displays the dark current accumulated in the two-dimensional sensor 124. In order to save the battery by erasing and conserving power, or to avoid excessive heat generation, an automatic transition process is performed in which the operation state of the first FPD 120-1 is set to the standby state (<s024>). . Then, the CPU 121 of the first FPD 120-1 performs processing for setting the standby state duration T2 (<s025>).

Then, when the standby state duration T2, which is the predetermined time set in <s025>, has elapsed, the CPU 121 of the first FPD 120-1 activates the operation state of the first FPD 120-1 in the activated state. (<S027>). Then, the CPU 121 of the first FPD 120-1 performs a process of setting the activated state duration T1 (<s031>). Further, the CPU 121 of the first FPD 120-1 performs processing for notifying the system control unit 150 that the first FPD 120-1 is in an activated state (<s028>). Furthermore, the CPU 121 of the first FPD 120-1 notifies the second FPD 120-2 that the first FPD 120-1 is in an activated state substantially simultaneously with the notification to the system control unit 150. The notification process is performed (<s029>).
When the CPU 151 of the system control unit 150 receives notification from the first FPD 120-1 that it is in the activated state, it performs a process of notifying the inspection ID (<s030>) as in <s017>.

  In addition, the CPU 121 of the second FPD 120-2 uses the dark current accumulated in the two-dimensional sensor 124 when X-ray imaging is not performed within the activation state duration T1 set in <s026>. In order to save the battery by erasing and conserving power, or to avoid excessive heat generation, automatic transition processing is performed in which the operation state of the second FPD 120-2 is in a standby state (<s032>). . Then, the CPU 121 of the second FPD 120-2 performs a process of setting the standby state duration T2 (<s033>).

Then, when the standby state duration T2, which is the predetermined time set in <s033>, elapses, the CPU 121 of the second FPD 120-2 activates the operation state of the second FPD 120-2. (<S034>). At this time, the CPU 121 of the second FPD 120-2 performs a process of setting the activated state duration T1. Further, the CPU 121 of the second FPD 120-2 performs a process of notifying the second FPD 120-2 to the fact that the second FPD 120-2 is in an activated state (<s035>) and the system Processing for notifying the control unit 150 is performed (<s036>).
When the CPU 151 of the system control unit 150 receives notification from the second FPD 120-2 that it is in the activated state, the CPU 151 performs a process of notifying the inspection ID as in <s023>(<s037>).

  Thereafter, the above process is repeated.

In the X-ray imaging system 100 according to the present embodiment, when the first FPD 120-1 that is one FPD of the plurality of FPDs 120 transitions to the activated state, the first FPD 120-1 The second FPD 120-2, which is the other FPD other than the FPD 120-1, is notified of the transition to the activated state (<s016>).
When the second FPD 120-2 receives a notification (<s016>) indicating that the activation state has changed from the first FPD 120-1, the activation state is delayed by a delay time T3 that is a predetermined time. (<S019> to <s020>). For this reason, for example, if there is a relationship of T1>T3> T2, even when the first FPD 120-1 is in the standby state, the second FPD 120-2 is in the activated state. That is, as shown in FIG. 5, in the X-ray imaging system 100 according to the present embodiment, at the time of X-ray imaging of the subject H, any one of the plurality of FPDs 120 is activated. Yes. Furthermore, at a certain timing during X-ray imaging of the subject H, two or more FPDs of the plurality of FPDs 120 (in the example shown in FIG. 1, the first FPD 120-1 and the second FPD 120-2 In some cases, both of them are simultaneously activated (for example, <s021>, <s029>, <s035>). In this case, the operator does not need to separately select the FPD 120 used for X-ray imaging using the user interface. In the present embodiment, as shown in FIG. 5, since one of the FPDs 120 is always in an activated state (X-ray detectable state (radiation detectable state)), no wasteful waiting time is generated.

  Further, if the first FPD 120-1 is in an activated state, X-ray irradiation is performed by X-ray imaging, and the first FPD 120-1 stores “X dose (charge) accumulation as shown in FIG. When transitioning to the “reading state” and then transitioning to the “X-ray image data transmission state”, the state returns to the standby state, and X-ray imaging with the first FPD 120-1 becomes impossible. In the meantime, the second FPD 120-2 independently repeats the activated state and the standby state. Therefore, even when the first FPD 120-1 is in a state where X-ray imaging is not possible, the second FPD 120-2 can perform independent X-ray imaging.

  In addition, although not shown in FIG. 5, a command for requesting information presentation as to whether or not they are in an activated state so that the first FPD 120-1 and the second FPD 120-2 can grasp each other's activated state. It is also possible to control such that at least one FPD 120 is always in an activated state.

  In addition, a flag indicating the activation state / standby state of each FPD 120 is stored in the storage unit 152 of the system control unit 150, and the operation state of each FPD 120 is always monitored and updated in the system control unit 150. It can be adopted. In this case, the first FPD 120-1 and the second FPD 120-2 can control the activation status through a command for knowing the flag stored in the storage unit 152. Here, as a specific control method, the optimum state of the X-ray imaging system 100 as a whole is obtained by adaptively changing the delay time T3 in <s019> of FIG. Can keep.

Next, display and operation on the monitor 150c shown in FIG. 1 will be described.
FIG. 6 is a diagram for explaining the display and operation on the monitor 150c shown in FIG.

  The monitor 150c shown in FIG. 6 includes an image display area 601 that displays an X-ray image based on X-ray image data obtained by X-ray imaging with the FPD 120, and a GUI that can use information display, touch panel / mouse click, and the like. A region 602 is provided. Here, the X-ray image displayed in the image display area 601 is, for example, the latest X-ray image obtained by X-ray imaging with the first FPD 120-1 or the second FPD 120-2. Information displayed in the GUI area 602 includes patient information, examination order name, imaging part information, FPD model name, X-ray imaging conditions, imaging time, facility / operator information, and X-ray images obtained by past imaging. Reduced version (thumbnail). Further, what can be operated in the GUI area 602 includes image processing parameter adjustment such as gradation adjustment and sharpness adjustment of an X-ray image, and setting of an X-ray image cut-out area.

  The operator confirms an X-ray image based on the X-ray image data sent from the first FPD 120-1 or the second FPD 120-2 displayed in the image display area 601 and operates the GUI area 602. Adjust the image processing parameters. Thereafter, the operator performs processing such as transferring the X-ray image data to a management server (not shown) as necessary.

Next, a processing procedure in the control method of the X-ray imaging system 100 according to the present embodiment will be described.
FIG. 7 is a flowchart illustrating an example of a processing procedure in the control method of the X-ray imaging system (radiography system) according to the first embodiment of the present invention.

  First, in step S701, the CPU 151 of the system control unit 150 performs registration processing of the first FPD 120-1 and the second FPD 120-2 that can be detected in the wireless LAN environment.

  Subsequently, in step S702, the CPU 121 of the first FPD 120-1 registered in step S701 performs a process of automatically transitioning the operation state of the first FPD 120-1 to the activated state. Similarly, the CPU 121 of the second FPD 120-2 registered in step S701 performs a process of automatically transitioning the operation state of the second FPD 120-2 to the activated state. At this time, the CPU 121 of the first FPD 120-1 and the CPU 121 of the second FPD 120-2 may activate their own devices based on the control of the system control unit 150.

  Subsequently, in step S703, the CPU 151 of the system control unit 150 performs processing for transmitting a desired inspection ID (inspection information) to the first FPD 120-1 and the second FPD 120-2 registered in step S701. Do.

Subsequently, in step S704, has the CPU 151 of the system control unit 150 received X-ray image data from one of the first FPD 120-1 and the second FPD 120-2 registered in step S701? Judge whether or not.
As a result of this determination, if X-ray image data is not received from any one of the first FPD 120-1 and the second FPD 120-2 registered in step S701, the process waits in step S704. .

On the other hand, as a result of the determination in step S704, if X-ray image data is received from any one of the first FPD 120-1 and the second FPD 120-2 registered in step S701, the process proceeds to step S705. .
In step S705, the CPU 151 of the system control unit 150 determines whether or not the examination ID attached to the received X-ray image data matches the desired examination ID transmitted in step S703.

  As a result of the determination in step S705, if the examination ID attached to the received X-ray image data does not match the desired examination ID transmitted in step S703, the process returns to step S704.

On the other hand, as a result of the determination in step S705, if the examination ID attached to the received X-ray image data matches the desired examination ID transmitted in step S703, the process proceeds to step S706.
In step S706, the CPU 151 of the system control unit 150 performs a process of displaying an X-ray image based on the received X-ray image data on the display unit 154 (monitor 150c). Further, the CPU 151 of the system control unit 150 performs processing for storing the received X-ray image data in the storage unit 152 and the like.

  When the process of step S706 ends, the process returns to step S704, and the processes after step S704 are performed again.

Here, the data structure of the X-ray image data transmitted from the first FPD 120-1 or the second FPD 120-2 to the system control unit 150 will be described.
FIG. 8 is a diagram illustrating an example of a data configuration of X-ray image data transmitted from the first FPD 120-1 or the second FPD 120-2 illustrated in FIG. 1 to the system control unit 150.

  X-ray image data transmitted from the first FPD 120-1 or the second FPD 120-2 to the system control unit 150 includes header information 801 and image information 802 as shown in FIG. The header information 801 is a part that is transmitted prior to the image information 802. As shown in FIG. 8, the header information 801 includes information such as FPD ID, shooting date and time, FPD model name, and image size (X, Y), including an inspection ID that is inspection information. Here, the inspection ID of the header information 801 is transmitted from the system control unit 150 to the FPD 120 prior to X-ray imaging.

  The system control unit 150 can check whether the received X-ray image data is the desired X-ray image data by using the examination ID included in the header information 801 of the received X-ray image data. is there.

In the radiation imaging system 100 of the present embodiment, a plurality of radiation image detectors (FPD) that detect radiation transmitted through the subject H and obtain a radiation image, and a control unit that controls the plurality of radiation image detectors ( A second radiographic image when the first radiographic image detector (first FPD 120-1) of the plurality of radiographic image detectors transitions to a radiation detectable state. The detector (second FPD 120-2) transitions to a radiation detectable state. Specifically, the first radiation image detector (first FPD 120-1) can detect radiation when the first radiation image detector (first FPD 120-1) transitions to a radiation detectable state. A communication unit that transmits the state to the second radiation image detector (second FPD 120-2), and the second radiation image detector (second FPD 120-2) transitions to a radiation detectable state. To do. Therefore, complicated control by the radiographic system can be avoided. Note that the communication unit may use the access point 150b. Moreover, you may have a communication part inside the 1st radiographic image detector and the 2nd radiographic image detector.
Further, in the present embodiment, as a method for registering the first FPD 120-1 and the second FPD 120-2 in the system control unit 150, a method corresponding to a beacon signal output from the access point 150b of the wireless LAN is adopted. However, the same effect can be obtained with other methods. For example, according to a method of registering the first FPD 120-1 and the second FPD 120-2 by other input means, or a connection request signal transmitted from the first FPD 120-1 or the second FPD 120-2, the system A method in which the control unit 150 registers in response can also be employed.

  In the present embodiment, the communication connection between the system control unit 150 and the first FPD 120-1 and the second FPD 120-2 is a wireless communication connection. Therefore, the present embodiment can be adopted.

  Further, in the present embodiment, one X-ray imaging system 100 has been described. However, even if a plurality of X-ray imaging systems that cooperate with each other are constructed, the same effect can be obtained, and therefore, this embodiment can be adopted. It is.

In the present embodiment, the FPD 120 assumes a method in which the detection of the X-ray 111 and the driving of the two-dimensional sensor 124 in the FPD 120 are synchronized by the automatic X-ray detection function. It may be.
For example, each FPD 120 and the X-ray generator 110 are configured to be communicable with each other by wiring or communication means. Each FPD 120 receives timing information related to the timing of irradiating the subject H with the X-ray 111 from the X-ray generation unit 110, and detects the X-ray 111 transmitted through the subject H based on the timing information. X-ray image data is generated. That is, by configuring each FPD 120 and the X-ray generation unit 110 to be communicable, each FPD 120 can also synchronize the detection timing of the X-ray 111 and the driving of the two-dimensional sensor 124 in each FPD 120. It can be adopted. In addition, the same effect can be obtained in a mode in which communication between each FPD 120 and the X-ray generation unit 110 described above is performed via the system control unit 150.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.

  FIG. 9 is a diagram illustrating an example of a schematic configuration of an X-ray imaging system (radiation imaging system) 200 according to the second embodiment of the present invention. In FIG. 9, the same components as those in the X-ray imaging system 100 according to the first embodiment shown in FIG. Although not shown in FIG. 9, the X-ray imaging system 200 according to the present embodiment includes the X-ray generation control unit 130, the X-ray irradiation button 140, and the system control unit 150 shown in FIG. 1. It shall be.

  In this embodiment, the first FPD 920-1 (first radiological image detector) and the second FPD 920-2 (second radiological image detector) are used to smoothly move a plurality of parts of the subject H. This is a form of X-ray imaging. In the following description, the case common to the first FPD 920-1 and the second FPD 920-2 will be described simply as “FPD 920”.

  In this embodiment, one X-ray generation unit 110 is moved to perform X-ray imaging using the first FPD 920-1 and the second FPD 920-2.

  The subject H is in a fixed state lying on the bed. The first FPD 920-1 and the second FPD 920-2 are disposed between the subject H and the bed. The first display portion 921 and the second display portion 922 are the states of the first FPD 920-1 and the second FPD 920-2 (activated state (X-ray detectable state (radiation detectable state)), etc., respectively. ) Is displayed. The first FPD 920-1 and the second FPD 920-2 in the present embodiment have the display unit 125 from the first FPD 120-1 and the second FPD 120-2 in the first embodiment shown in FIG. 2, respectively. The configuration is removed. That is, a first display unit that is separate from the first FPD 920-1 and includes the imaging preparation completion display unit (ready lamp) 120-11 and the wireless communication status display unit (link lamp) 120-12 shown in FIG. 921 is provided. Similarly, the second display is separate from the second FPD 920-2 and includes the imaging preparation completion display unit (ready lamp) 120-21 and the wireless communication status display unit (link lamp) 120-22 shown in FIG. A portion 922 is provided. The communication connection between the first FPD 920-1 and the first display unit 921 and the communication connection between the second FPD 920-2 and the first display unit 922 are wired communication connections even if they are wireless communication connections. There may be. At this time, the communication connection may be connected via the system control unit 150.

  In the present embodiment, as described above, the display unit is configured separately from the FPD 920. This prevents the FPD 920 from being hidden under the subject H, so that the imaging preparation completion display unit (ready lamp) and the wireless communication status display unit (link lamp) shown in FIG. It is an object.

  In FIG. 9, the operator arranges a first FPD 920-1 and a second FPD 920-2 in a predetermined position below the subject H in advance, and X-ray imaging of necessary parts as appropriate in an optimal order. Is performed while moving the X-ray generation unit 110. Specifically, when X-ray imaging using the first FPD 920-1 is performed, the subject H is irradiated with the X-ray 111 from the position of the X-ray generation unit 110 illustrated in FIG. 9. Further, when X-ray imaging using the second FPD 920-2 is performed, the subject H is irradiated with the X-ray 111 ′ from the position of the X-ray generation unit 110 ′ shown in FIG.

For example, when performing X-ray imaging of a plurality of parts in the subject H using only one FPD 920, it is necessary to change the position of the one FPD 920 for each X-ray imaging, and the operator and the subject H In addition, an excessive burden is placed on the X-ray imaging.
On the other hand, in the present embodiment, since a plurality of FPDs 920 are arranged and X-ray imaging is performed by their mutual communication, X-ray imaging is performed without imposing an excessive burden on the operator and the subject H. be able to. Further, in the present embodiment as well, as in the first embodiment described above, since any one of the plurality of FPDs 920 can be always activated, the subject H can be continuously and relatively quickly. X-ray imaging of different parts is possible.

  In the X-ray imaging system 200 shown in FIG. 9, an example in which two FPDs 920-1 to 920-2 are provided as a plurality of radiation image detectors is shown, but the present embodiment is limited to this. It is not a thing. For example, a form in which three or more FPDs 920 are provided as a plurality of radiation image detectors may be used.

  FIG. 9 shows an example in which one X-ray generation unit 110 is moved and X-ray imaging is performed by a plurality of FPDs 920. However, the present embodiment is not limited to this example. A plurality of X-ray generation units 110 may be provided corresponding to the number of FPDs 920.

In the present embodiment, as in the first embodiment, the FPD 920 assumes a method in which the X-ray detection is synchronized with the driving of the two-dimensional sensor 124 in the FPD 920 by the X-ray automatic detection function. However, other methods described below may be used.
For example, each FPD 920 and the X-ray generation unit 110 are configured to be communicable with each other by wiring or communication means. Each FPD 920 receives timing information related to the timing of irradiating the subject H with the X-ray 111 from the X-ray generation unit 110, and detects the X-ray 111 that has passed through the subject H based on the timing information. X-ray image data is generated. That is, by configuring each FPD 920 and the X-ray generator 110 to be communicable, each FPD 920 can also synchronize the detection timing of the X-ray 111 with the driving of the two-dimensional sensor 124 in each FPD 920. It can be adopted. Moreover, the same effect can be obtained by performing communication between each FPD 920 and the X-ray generation unit 110 described above via the system control unit 150.

(Third embodiment)
Next, a third embodiment of the present invention will be described.

  FIG. 10 is a diagram illustrating an example of a schematic configuration of an X-ray imaging system (radiation imaging system) 300 according to the third embodiment of the present invention. 10, the same code | symbol is attached | subjected about the structure similar to the X-ray imaging system 200 which concerns on 2nd Embodiment shown in FIG. Although not illustrated in FIG. 10, the X-ray imaging system 300 according to the present embodiment includes the X-ray generation control unit 130, the X-ray irradiation button 140, and the system control unit 150 illustrated in FIG. 1. It shall be.

  In the present embodiment, the first FPD 920-1 and the second FPD 920-2 are simultaneously irradiated with the X-ray 111 from one X-ray generation unit 110, and the first FPD 920-1 and the second FPD 920-2. X-ray image data is simultaneously acquired from -2.

  In the case of the present embodiment, in the sequence diagram shown in FIG. 5 described above, the delay time T3 set in <s019> is set to 0, or the first FPD 920-1 and the second FPD 920-2 are simultaneously synchronized. Then, the time T3 is adaptively adjusted so as to be in the activated state (X-ray detectable state (radiation detectable state)). In this case, for example, when the second FPD 920-2 receives a notification from the first FPD 920-1 that it has transitioned to the activated state, the second FPD 920-2 transitions to the activated state substantially simultaneously with the reception of the notification. It will be. In any case, the operator confirms the display units 921 and 922 provided separately, confirms that the first FPD 920-1 and the second FPD 920-2 are simultaneously activated, An operation of irradiating the X-ray 111 from the X-ray generation unit 110 is performed.

  In FIG. 10, the X-ray generation unit 110 can irradiate the X-ray 111 simultaneously to a range covering the two FPDs 920 of the first FPD 920-1 and the second FPD 920-2. In the example shown in FIG. 10, a set of two pieces of X-ray image data is transmitted to the system control unit 150 by one irradiation of the X-rays 111.

  In this case, the system control unit 150 sequentially displays two X-ray images based on a set of two X-ray image data, or combines the two X-ray images into a single composite X-ray. A process of generating an image (composite radiation image) and displaying the composite X-ray image is performed. The case where two X-ray images are combined into one is particularly effective when X-ray imaging is performed over a wide range such as the spine and foot bones of a human body.

  In the X-ray imaging system 300 shown in FIG. 10, an example in which two FPDs 920-1 to 920-2 are provided as a plurality of radiation image detectors is shown, but the present embodiment is limited to this. It is not a thing. For example, a form in which three or more FPDs 920 are provided as a plurality of radiation image detectors may be used. In this case, the number of combined X-ray images is not limited to one, and a plurality of other combined X-ray images may be generated depending on the purpose.

  FIG. 10 shows an example in which X-ray imaging is performed by irradiating a plurality of FPDs 920 with X-rays 111 from one X-ray generation unit 110. However, the present embodiment is not limited to this. For example, a plurality of X-ray generation units 110 may be provided corresponding to the number of each FPD 920.

  In the present embodiment, a plurality of X-ray image data obtained by a plurality of FPDs 920 can be transmitted to the system control unit 150 substantially simultaneously. This can be easily realized by, for example, time division transmission in units of packets in the wireless LAN system. At this time, by making the radio channels (frequencies) used by the plurality of FPDs 920 different from each other without interfering with each other, a plurality of X-ray image data can be transmitted substantially simultaneously.

  In the present embodiment, the communication connection between the first FPD 920-1 and the first display unit 921 and the communication connection between the second FPD 920-2 and the first display unit 922 are wireless communication connections. Or a wired communication connection. At this time, the communication connection may be connected via the system control unit 150.

In the present embodiment, as in the first embodiment, the FPD 920 assumes a method in which the X-ray detection is synchronized with the driving of the two-dimensional sensor 124 in the FPD 920 by the X-ray automatic detection function. However, other methods described below may be used.
For example, each FPD 920 and the X-ray generation unit 110 are configured to be communicable with each other by wiring or communication means. Each FPD 920 receives timing information related to the timing of irradiating the subject H with the X-ray 111 from the X-ray generation unit 110, and detects the X-ray 111 that has passed through the subject H based on the timing information. X-ray image data is generated. That is, by configuring each FPD 920 and the X-ray generator 110 to be communicable, each FPD 920 can also synchronize the detection timing of the X-ray 111 with the driving of the two-dimensional sensor 124 in each FPD 920. It can be adopted. Moreover, the same effect can be obtained by performing communication between each FPD 920 and the X-ray generation unit 110 described above via the system control unit 150.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described.

  In the first embodiment described above, when the FPD 120 enters the wireless communication environment of the X-ray imaging system 100, the FPD 120 is automatically registered. However, for example, when there are a plurality of X-ray imaging systems 100 and their wireless communication environments overlap, registration of the FPD 120 becomes difficult. In addition, it may be assumed that a certain FPD 120 itself belongs to which X-ray imaging system 100 and what kind of X-ray imaging of an inspection object is to be performed. Therefore, in the present embodiment, the configuration of the FPD 120 is devised in order to eliminate these problems.

  Here, the schematic configuration of the X-ray imaging system (radiation imaging system) according to the fourth embodiment is the same as the schematic configuration of the X-ray imaging system (radiation imaging system) 100 according to the first embodiment shown in FIG. It is.

  FIG. 11 is a diagram illustrating an example of a schematic configuration of the FPD 120 illustrated in FIG. 1 according to the fourth embodiment of the present invention.

  As shown in FIG. 11, the FPD 120 in this embodiment includes a shooting preparation completion display unit (ready lamp) 1110, a wireless communication status display unit (link lamp) 1120, an FPD status display unit 1130, a selection button 1140, a power switch 1150, and , A cancel button 1160 is provided.

The imaging preparation completion display unit (ready lamp) 1110 indicates whether or not the FPD 120 is ready for X-ray imaging by, for example, lighting. The photographing preparation completion display unit (ready lamp) 1110 has the same configuration as the photographing preparation completion display units (ready lamps) 120-11 and 120-21 shown in FIG.
The wireless communication state display unit (link lamp) 1120 indicates the wireless communication state of the FPD 120 by, for example, whether or not lighting is possible. The wireless communication state display unit (link lamp) 1120 has the same configuration as the wireless communication state display units (link lamps) 120-12 and 120-22 shown in FIG.
The FPD status display unit 1130 displays the status of the FPD 120. The FPD status display unit 1130 includes a first FPD status display region 1131 that shows connectable X-ray imaging systems as SSID1 to SSID3, and a second FPD status display region 1132 for confirming the current imaging target. Configured. The first FPD state display area 1131 is configured to be able to select any one of SSID1 to SSID3. In the second FPD state display area 1132, information on the X-ray imaging examination transmitted from the X-ray imaging system selected in the first FPD state display area 1131 is displayed. Specifically, information such as the corresponding examination ID, patient name, examination name, and imaging region is displayed in the second FPD state display area 1132, and the operator views these information before X-ray imaging. It can be easily confirmed that there is no mistake in X-ray imaging. The FPD state display unit 1130 having the second FPD state display region 1132 has a function of an examination information display unit.
The selection button 1140 is a button for setting the state of the FPD 120.
The power supply SW 1150 is a switch for switching on / off the power supply 123.
A cancel button 1160 is a button for removing the FPD 120 from the X-ray imaging target. That is, the cancel button 1160 is operated by the operator when the current imaging target or the current X-ray imaging system is not desired, and the cancel button 1160 is operated to establish a communication connection to the X-ray imaging system. Can be cut.
Here, for example, the display unit 125 shown in FIG. 2 includes a photographing preparation completion display unit (ready lamp) 1110 and a wireless communication state display unit (link lamp) 1120 shown in FIG. Further, for example, the FPD state display unit 1130 is configured from the display unit 125 and the operation unit 126 illustrated in FIG. 2. Further, for example, a selection button 1140, a power supply SW 1150, and a cancel button 1160 are configured from the operation unit 126 illustrated in FIG.

  The operator confirms the imaging preparation completion display unit (ready lamp) 1110 and the wireless communication status display unit (link lamp) 1120 to perform X-ray imaging, and to which X-ray imaging system the FPD 120 is currently connected. In the first FPD state display area 1131, and if it is not a desired X-ray imaging system, a desired connection destination can be selected in the first FPD state display area 1131. ing.

  In the example illustrated in FIG. 11, the FPD status display unit 1130 is provided as one configuration of the FPD 120, but the present embodiment is not limited to this. For example, constructing the FPD status display unit 1130 separately from the FPD 120 is also applicable to this embodiment.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described.

  FIG. 12 is a diagram illustrating an example of a schematic configuration of an X-ray imaging system (radiation imaging system) according to the fifth embodiment of the present invention. In FIG. 12, the same reference numerals are given to the same components as those of the X-ray imaging system 100 according to the first embodiment shown in FIG. Although not shown in FIG. 12, the X-ray imaging system according to the present embodiment includes, for example, the X-ray generation unit 110, the X-ray generation control unit 130, and the X-ray irradiation button 140 shown in FIG. It shall be configured.

  In the present embodiment, X-ray imaging corresponding to a plurality of examination IDs is simultaneously performed with one X-ray imaging system. In the example shown in FIG. 12, it is assumed that three inspection requests (inspection ID1, inspection ID2, inspection ID3) are made for a certain X-ray imaging system and are connected to the X-ray imaging system. X-ray imaging is performed using the six FPDs 120-1 to 120-6.

  FIG. 12 shows a system control unit 150 and a plurality of FPDs 120-1 to 120-6 corresponding to a plurality of inspection IDs 1 to ID3. In the example illustrated in FIG. 12, the system control unit 150 divides the six FPDs 120-1 to 120-6 into three groups each including two different inspection IDs (inspection ID 1, inspection ID 2, inspection ID 3). ) And the assigned examination ID is transmitted. Specifically, in the example shown in FIG. 12, the FPD 120-1 to 120-2 group is assigned to the examination ID 1, the FPD 120-3 to 120-4 group is assigned to the examination ID 2, and the FPD 120-5 to 120-6 group is assigned. Is assigned to inspection ID3.

  The specific operation of the X-ray imaging system is the same as that of the first embodiment described above. In this case, in order to clarify which FPD 120 corresponds to which examination ID, the above-described first operation is performed. The FPD 120 described in the fourth embodiment is more preferably used.

  In the case of this embodiment, the activation state duration T1, the standby state duration T2, the delay time T3, etc. so that the efficiency of X-ray imaging is optimized by appropriately communicating between the FPDs 120 in each group. Is adjusted adaptively.

  In addition, the system control unit 150 according to the present embodiment manages the X-ray image data acquired from each FPD 120 for each assigned examination ID. Specifically, the system control unit 150 stores and manages the X-ray image data acquired from each FPD 120 in a unique folder for each examination ID.

(Sixth embodiment)
Next, a sixth embodiment of the present invention will be described.

  FIG. 13 is a diagram showing an example of a schematic configuration of an X-ray imaging system (radiation imaging system) 600 according to the sixth embodiment of the present invention. In FIG. 13, the same components as those in the X-ray imaging system 100 according to the first embodiment shown in FIG.

  As shown in FIG. 13, the X-ray imaging system 600 according to the present embodiment has a configuration in which a plurality of X-ray generation units (radiation generation units) 110 capable of X-ray irradiation substantially simultaneously are arranged. Specifically, two X-ray generation units 110-1 to 110-2 corresponding to the two FPDs 120-1 to 120-2 are provided. Here, the first X-ray generator 110-1 irradiates the subject H with the X-ray 111-1, and the second X-ray generator 110-2 applies the X-ray 111 to the subject H. -2 is irradiated.

  The X-ray generators 110-1 to 110-2 perform X-ray irradiation substantially simultaneously on the FPDs 120-1 to 120-2 through the subject H. In this case, the X-rays 111-1 to 111-2 from the X-ray generation units 110-1 to 110-2 are irradiated to the same part of the human body that is the subject H, but the first FPD 120-1 and the first FPD 120-1 Since the two FPDs 120-2 are arranged at different positions on the subject H, X-rays irradiated from different directions are incident on the first FPD 120-1 and the second FPD 120-2, respectively. In the first FPD 120-1 and the second FPD 120-2, X-ray image data is generated substantially simultaneously and transmitted to the system control unit 150. With the configuration of the X-ray imaging system 600 shown in FIG. 13, stereo X-ray imaging (stereo radiation imaging) using two X-ray images from different directions can be realized.

  In the case of the present embodiment, the monitor 150c is a stereo display that displays a set of two stereo X-ray images substantially simultaneously, and can project X-ray images independently to both eyes of the operator. .

(Other embodiments)
The present invention can also be realized by executing the following processing.
That is, software (program) that realizes the functions of the above-described embodiments is supplied to a system or apparatus via a network or various storage media, and a computer (or CPU, MPU, etc.) of the system or apparatus reads the program. It is a process to be executed.
This program and a computer-readable recording medium storing the program are included in the present invention.

  Note that the above-described embodiments of the present invention are merely examples of implementation in practicing the present invention, and the technical scope of the present invention should not be construed as being limited thereto. It is. That is, the present invention can be implemented in various forms without departing from the technical idea or the main features thereof.

100 X-ray imaging system, 110 X-ray generation unit, 111 X-ray, 120-1 first FPD, 120-2 second FPD, 130 X-ray generation control unit, 140 X-ray irradiation button, 150 system control unit, 150a PC, 150b access point, 150c monitor, H subject

Claims (16)

A plurality of radiation image detectors for detecting radiation transmitted through the subject and obtaining radiation images;
A control unit for controlling the plurality of radiation image detectors;
A communication unit that transmits to the second radiation image detector that the first radiation image detector of the plurality of radiation image detectors has transitioned to a radiation detectable state ; and
Before Stories second radiation image detector, the first radiation image detector with a delay after receiving the transmission of that transition to radiation detectable state for a predetermined time period transitions to radiation detectable state by the communication unit The radiation imaging system, wherein the first radiation image detector is in a radiation detectable state when the first radiation image detector transitions to a standby state . 2. The radiographic system according to claim 1, wherein the first radiographic image detector shifts to the standby state when radiography is not performed within a duration of the radiation detectable state. 3. . The radiation imaging system according to claim 1, wherein the first radiation image detector transitions to the radiation detectable state when a duration time of the standby state elapses. The first radiological image detector transitions to the radiation detectable state with a predetermined delay after receiving the notification that the second radiological image detector has transitioned to the radiation detectable state by the communication unit. The radiation imaging system according to any one of claims 1 to 3, wherein the radiation detection system is in the radiation detectable state when the second radiation image detector transitions to a standby state. The first radiation image detector and the second radiation image detector is any one of claims 1 to 4 independently of the control by the control unit, characterized by a transition to the radiation detectable state 1 The radiation imaging system according to item. Wherein the control unit, the radiation imaging system according to any one of claims 1 to 5, characterized in that performs control to acquire the radiographic image from the radiation image detector of the plurality of the radiation image detector.   2. The radiation according to claim 1, wherein at the time of radiography of the subject, any one of the plurality of radiological image detectors is in a state where the radiation can be detected. Shooting system.   2. The radiographic image detection apparatus according to claim 1, wherein two or more radiographic image detectors among the plurality of radiographic image detectors are in the radiation detectable state at a certain timing when radiographing the subject. The radiation imaging system described in 1. Each radiation image detector of the plurality of the radiation image detector, any of claims 1 to 8, characterized in that imaging preparation completion display section to indicate whether preparation has been completed radiographic are provided The radiation imaging system according to claim 1. The radiographic image detector further includes an imaging preparation completion display unit provided corresponding to each radiographic image detector in the plurality of radiographic image detectors, and indicating whether the corresponding radiographic image detector is ready for radiography. The radiation imaging system according to any one of claims 1 to 8 . A radiation generator for irradiating the subject with radiation;
Each of the radiation image detectors in the plurality of radiation image detectors is configured to be communicable with the radiation generator, and receives timing information related to the timing of irradiating the subject with radiation from the radiation generator. The radiation imaging system according to any one of claims 1 to 10 , wherein the radiation image is obtained by detecting radiation transmitted through the subject based on the timing information. The control unit transmits examination information of the subject to each radiation image detector in the plurality of radiation image detectors,
Wherein each of the radiation image detector, the radiation imaging system according to any one of claims 1 to 11, characterized in that the transmitted along with the radiographic image of the subject the test information to the control unit. The radiation imaging system according to claim 12 , wherein each radiation image detector is provided with an examination information display unit that displays the examination information. The radiation control system according to claim 12 or 13 , wherein the control unit divides the plurality of radiation image detectors into a plurality of groups, and transmits the examination information different for each group. The radiographic system according to claim 14 , wherein the control unit manages the radiographic images acquired from the radiographic image detectors according to the examination information. A plurality of radiation image detectors that detect radiation transmitted through the subject to obtain a radiation image, a control unit that controls the plurality of radiation image detectors, and a first of the plurality of radiation image detectors A radiographic imaging system control method configured to include a communication unit that transmits to the second radiographic image detector that the radiographic image detector has transitioned to a radiation detectable state ,
Before Stories second radiation image detector, the first radiation image detector with a delay after receiving the transmission of that transition to radiation detectable state for a predetermined time period transitions to radiation detectable state by the communication unit A control method for a radiation imaging system , wherein the radiation detection system is in the radiation detectable state when the first radiation image detector transitions to a standby state .

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