JP2017217187A - Image display control apparatus and radiographic system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display control apparatus capable of saving trouble to an operator selecting and storing an X-ray image, and also to provide a radiographic system including the same.SOLUTION: The image display control apparatus comprises: first image control means for sequentially acquiring X-ray images captured by a radiographic apparatus and outputting the latest X-ray image to a first display unit; storage means for storing a plurality of captured X-ray images; and second image control means for outputting an X-ray image selected from the plurality of X-ray images stored in the storage means to a second display unit. Second image outputting means has: a first mode in which, when an X-ray image captured by first imaging is taken as a first X-ray image, the X-ray image to be output to the second display unit is automatically changed to the first X-ray image after the start of second imaging; and a second mode in which the X-ray image to be output to the second display unit is not changed automatically to the first X-ray image even after the start of the second imaging.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an X-ray image display apparatus that displays X-ray imaging, and more particularly to control of images displayed on a plurality of monitors.

  A conventional X-ray imaging system includes a C-arm carriage that captures an X-ray image of a subject placed on an operating table, and a monitor carriage that displays the captured X-ray image. The live monitor and the reference monitor are held in a state in which the relative angle can be freely adjusted (for example, Patent Document 1).

On the live monitor, a fluoroscopic or photographed X-ray image is displayed in real time. In the case of fluoroscopy and serial shooting, a plurality of frames are collected as moving images while the shooting switch is pressed, and each frame is sequentially displayed on the live monitor. When you take your hand off the shooting switch and the shooting is finished, the multiple frames of video collected so far are displayed repeatedly.
In the case of spot photography, an image of only one frame is collected and displayed on the live monitor.

  When the next imaging is performed, a newly collected X-ray image is displayed on the live monitor instead of the X-ray image that has been displayed. The operator can save the X-ray image currently displayed on the live monitor in a non-volatile memory such as a hard disk by performing a specific operation before the next imaging.

  On the other hand, as described above, the X-ray image selected by the operator from the past X-ray images stored in the nonvolatile memory is displayed on the reference monitor.

In the case of a moving image, all the frames from the start to the end of acquisition are referred to as an X-ray image, and the X-ray image displayed on the live monitor is also referred to as a live image. Refer to the X-ray image displayed on the reference monitor. Also called an image. The same shall apply hereinafter.

Japanese Patent Publication No. 2009-512482

  When an X-ray imaging system is used in an operating room, there are many cases where both hands are occupied, and there is a problem that it is desired to save as much time and effort as possible. In this regard, the conventional X-ray imaging system requires some operation in order to store the live image. In addition, an operation for selecting an X-ray image to be displayed on the reference monitor is also necessary.

  In this regard, all live images can be stored, and the latest stored X-ray can be automatically selected and displayed as a reference image on a reference monitor. However, depending on the content of the operation, a specific reference image is displayed. Sometimes you want to continue.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an image display control device or an X-ray imaging system including the image display control device that can solve the above problems and save the operator from selecting and storing an X-ray image.

In order to solve the above problems, an image control apparatus according to the present invention is an image display control apparatus that outputs an X-ray image captured by an X-ray imaging apparatus to a display, and is captured by the X-ray imaging apparatus. A first image control unit that sequentially acquires X-ray images and outputs the latest X-ray image to the first display; a storage unit that stores a plurality of captured X-ray images; Second image control means for outputting an X-ray image selected from the plurality of X-ray images to a second display, wherein the second image output means is configured to perform the X-ray image obtained by the first imaging. When the line image is the first X-ray image, the X-ray image to be output to the second display is automatically generated after the first imaging or after the second imaging is started. After the first mode for changing to the X-ray image and the second imaging is started, the second display And having a second mode that does not change the X-ray image to be output automatically to the first X-ray image.
By the above means, in the case of the first mode, after the second shooting is started, the first shot image is automatically displayed on the second display. The burden can be reduced. In the case of the second mode, the display image of the changed second display is not automatically changed, so that it is possible to compare and view a specific image and the latest X-ray image.

  Further, the X-ray image may be a single image, or a fluoroscopic image or a photographed image composed of a plurality of frames.

In addition, the first or second image control means outputs an image indicating the first mode or the second mode together with an X-ray image.
Thereby, since the mode can be confirmed on the screen, it is possible to prevent the X-ray image of the second display device from being changed unintentionally or to prevent omission of storage of the X-ray image. .

Further, an X-ray imaging system including an X-ray imaging apparatus and the image display control apparatus has an input unit for switching between the first mode and the second mode provided in the X-ray imaging apparatus. It is good also as providing.
Thereby, the mode switching operation can be performed on the X-ray imaging apparatus side.

Further, the X-ray imaging apparatus includes an X-ray source, an X-ray detector that outputs X-ray images output from the X-ray source and transmitted through the subject, and a high voltage applied to the X-ray source. A high-voltage generator for supplying the high-voltage generator, and an operation unit for setting conditions for the high voltage supplied by the high-voltage generator, wherein the input means is disposed on the operation unit. And
Thereby, the high voltage condition setting operation and the mode switching operation can be performed at the same place.

  By the above means, it is possible to save the labor of selecting and storing the X-ray image by the operator.

It is a figure which shows the whole image of a X-ray fluoroscopic imaging system. It is a figure which shows the detail of C arm trolley | bogie 2. FIG. 3 is a diagram illustrating details of an operation unit 21. FIG. It is a figure which shows the detail of the monitor truck.

  As shown in FIG. 1, the X-ray fluoroscopic system according to the present invention includes a monitor carriage 1 and a C-arm carriage 2 connected by an image signal line 4, a switching signal line 5, and an imaging state signal line 6. Together with the operating table 3 on which the sample M is placed, it is placed in the operating room.

The monitor cart 1 includes a live monitor 11, a reference monitor 12, and a monitor cart column 17.
The monitor carriage column 17 is held with respect to the monitor carriage casing 16 in a state where the height can be changed. The live monitor 11 and the reference monitor 12 are held on the monitor carriage column 17 in a state where the angle can be adjusted.

First, details of the C-arm carriage 2 will be described.
As shown in FIG. 1, the C-arm carriage 2 includes an operation unit 21, a control device 22, an X-ray source 23, an X-ray detector 24, a C-arm 25, and a C-arm carriage housing 26 having wheels. And have. A C-arm 25 is held in the C-arm carriage housing 26 so as to be movable in the height direction and the horizontal direction. The C-arm 25 holds an X-ray source 23 at one end and an X-ray detector 24 at the other end.

Further, as shown in FIG. 2, the control device 22 includes a CPU 22P, an FPGA 22F, a non-volatile memory 22D, and a high voltage generator 22V, and includes an operation unit 21, an X-ray source 23, and an X-ray. It is electrically connected to each of the detectors 24 and has a function of controlling each component.

  The CPU 22P of the control device 22 sets the shooting conditions (tube voltage, tube current, shooting time) set by the operation unit 21 to the high voltage generator 22V. Thereafter, when it is detected that an imaging switch (not shown) has been pressed, the high voltage generator 22V supplies a high voltage to the X-ray source 23. As a result, X-rays are emitted from the X-ray source 23, pass through the subject M, and converted into an X-ray image signal by the X-ray detector 24. Hereinafter, the image information generated from the X-ray image signal is expressed as a live image Ilive (t). t means time, and when a plurality of X-ray image signals are sequentially acquired, these series of images are expressed as a live image Ilive (t). Further, in the case of serial shooting or fluoroscopy, a plurality of live images Ilive (t) are obtained by one collection, but in the case of spot shooting, only one image is collected as a live image. In addition, the live image Ilive (t) is not particularly limited to the number of images.

  The live image Ilive (t) is sequentially read out by the FPGA 22 </ b> F connected to the X-ray detector 24, and transmitted to the monitor cart 1 through the image signal line 4.

  When the input of the imaging switch is released, the high voltage generator 22V stops supplying the high voltage to the X-ray source 23. At the same time, the X-ray detector 24 stops collecting and outputting the X-ray image signal. At this time, the CPU 22 </ b> P determines that shooting has ended, and outputs a shooting completion signal through the shooting state signal line 6. Note that the criterion for determining that shooting has been completed is not limited to the above, and may be when the input of the shooting switch is canceled, or when the supply of high voltage from the high voltage generator 22V is stopped thereafter, The X-ray detector 24 may stop the acquisition of the X-ray image, and the determination that the acquisition of the X-ray image is substantially stopped can be variously changed.

As shown in FIG. 3, the operation unit 21 includes a touch panel. Switches and displays for setting various conditions are arranged, and a switching button 21B is arranged as an icon.
Each time the control device 22 detects that the switch button 21B has been pressed, the control device 22 sequentially switches the current mode and transmits a mode signal corresponding to the current mode after the switch to the monitor carriage 1 through the switch signal line 5. To do.
The symbol used to display the icon of the switching button 21B is stored in the nonvolatile memory 22D corresponding to a plurality of modes, and the control device 22 reads the symbol corresponding to the current mode from the nonvolatile memory 22D and operates Displayed on the unit 21.

Next, the internal configuration of the monitor cart 1 will be described in detail. As shown in FIG. 4, a control circuit 13 and a PC 14 are arranged inside the monitor cart housing 16. The control circuit 13 includes a volatile memory 13M and an FPGA 13F.
The FPGA 13F has an input / output terminal connected to the volatile memory 13M, an image signal line 4 connected to an input terminal, and one end of a live monitor cable 11C connected to an output terminal. The other end of the live monitor cable 11C is connected to the live monitor 11.

  The PC 14 is a general computer that operates with a non-real-time OS, and includes at least a nonvolatile memory 14D and a CPU 14P. The CPU 14P is connected to the nonvolatile memory 14D so as to be able to input and output image data, and is connected to one end of the reference monitor cable 12C. The other end of the reference monitor cable 12C is connected to the reference monitor 12.

  The FPGA 13F sequentially stores the live image Ilive (t) input through the image signal line 4 in the volatile memory 13M, and sequentially stores the live image Ilive (t) stored in the volatile memory 13M frame by frame. Output to 11C. Further, the FPGA 13F continuously outputs a series of live images Ilive (t) sequentially to the distributor 15 for each frame after receiving the notification of the completion of shooting from the CPU 14P.

On the other hand, when receiving the shooting completion signal from the shooting state signal line 6, the PC 14 reads the live image Ilive (t) stored in the volatile memory 13M through the FPGA 13F and stores it in the nonvolatile memory 14D. The non-volatile memory 14D stores the live image Ilive (t) every time shooting is performed in this way. Each of these images is referred to as a reference image Iref (t, i). i is the number of the reference image. A reference image selected for display from the reference image Iref (t, i) is defined as Iref (t). Note that the reference image I ref (t, i) may be an image captured by another device.
The PC 14 sequentially outputs the reference image Iref (t, i) selected by the operator to the distributor 15 frame by frame. The program selected from the reference image Iref (t, i) by the PC 14 is software that operates on the OS, and the reference image Iref (t) stored as a moving image or a still image can be selected with a mouse or a keyboard. It has become.

When receiving the shooting start signal from the shooting state signal line 6, the PC 14 performs the following control according to the state of the mode signal input from the switching signal line 5.
First mode: The latest reference image Iref (t) (= the live image Ilive (t) most recently stored in the nonvolatile memory 14D) is automatically selected from the plurality of reference images Iref (t, i). The selected reference image Iref (t) is transmitted to the reference monitor cable 12C.
Second mode: do nothing.

  With this configuration, the live image Ilive (t) that is an X-ray image obtained by the first imaging is stored in the nonvolatile memory 14D as the latest reference image Iref (t), and the subsequent second imaging is performed. After the start of imaging, the latest reference image Iref (t) is automatically selected and changed as an X-ray image to be output to the reference monitor.

  In the present embodiment, the mode is managed on the C-arm carriage 2 side and notified to the monitor carriage 1. However, the mode is managed on the monitor carriage 1 and the managed state is notified to the C-arm carriage 2 side. It may be.

  The first mode is a mode in which an X-ray image is automatically transferred from the first display to the second display not only after the second imaging is started but also immediately after the first imaging. It may be.

Further, in this embodiment, the switching button 21B is provided on the C-arm carriage 2 side, but the arrangement of the button is not particularly limited. A button having the same function may be provided on the monitor carriage 1 side, or may be provided in a module different from these.
However, it is more preferable to arrange the switching button 21B on the C-arm carriage 2 side because a person operating the C-arm carriage 2 can switch modes. In particular, in the case of use in an operating room, there are doctors performing surgery in the vicinity of the operating table 3, but since doctors mostly use both hands, it is difficult to press the switch button 21B. It is. Therefore, the radiologist operating the C-arm carriage 2 can determine which mode to set based on the discussion with the doctor, and can operate the switching button 21B.
In the present embodiment, the operation unit 21 is a touch panel. However, the operation unit 21 is not particularly limited, and may have a configuration in which a physical switch and a display unit are separated. In addition, the embodiment can be variously changed as long as a signal serving as a trigger for setting the mode is generated.

  In addition, since shooting may end regardless of the operation of the operator, the detection of the completion of shooting does not need to be triggered by the absence of input of the shooting switch. For example, the C-arm on the monitor cart 1 side When the X-ray image is not transmitted from the carriage 2 for a certain period, it may be determined that the imaging is completed.

  Further, in the present embodiment, the live monitor 11 and the reference monitor 12 are held on the monitor carriage 1, but the means to be held need not be a carriage, and may be freely portable. For example, it may be held fixed or movable on the ceiling or floor. The uses of the live monitor 11 and the reference monitor 12 do not necessarily need to be live and reference, and need not be X-ray images. In addition, as long as one of the two displays displays an X-ray image in real time and the other displays a past X-ray image, the embodiment can be variously changed.

  The monitor carriage 1 and the C-arm carriage 2 use a control circuit for image processing that requires real-time processing, and use a PC for image processing that does not require real-time processing. If it is sufficient, processing of an image requiring real-time property may be performed by a PC, and conversely, it may be configured to operate by a real-time OS without using a PC. Furthermore, the memory for storage is provided with volatile and non-volatile memories, but both may be non-volatile memories if speed issues allow. Further, the image is not necessarily stored in the memory inside the monitor cart 1 or the C-arm cart 2, and may be stored in an external device.

  Furthermore, information such as the image, mode, shooting completion, and shooting start is transmitted through the image signal line 4, the switching signal line 5, and the shooting state signal line 6. However, the information transmission medium and route are not particularly limited. Packet communication such as LAN may be used, wireless may be used, and another relay point may be interposed therebetween.

The live monitor 11 is an example of the first display in the present invention, the reference monitor 12 is an example of the second display in the present invention, and the control circuit 13 is the first image in the present invention. PC 14 is an example of a second image control unit in the present invention, C-arm carriage 2 is an example of an X-ray imaging apparatus in the present invention, and live image Ilive (t) is It is an example of the latest X-ray image in the present invention, and the reference image Iref (t) is an example of a captured X-ray image.

1 monitor cart 11 live monitor 11C live monitor cable 12 reference monitor 12C reference monitor cable 13 control circuit 13M volatile memory 13F FPGA
14 PC
14D non-volatile memory 14P CPU
15 Distributor 16 Monitor cart housing 17 Monitor cart column 2 C-arm cart 21 Operation unit 22 Controller 22P CPU
22F FPGA
22D non-volatile memory 22V high voltage generator 23 X-ray source 24 X-ray detector 25 C arm 26 C arm carriage housing 3 operating table 4 image signal line 5 switching signal line 6 imaging state signal line M subject Ilive (t) Live image Iref (t) Reference image

Claims (6)

An image display control device that outputs an X-ray image captured by an X-ray imaging device to a display,
First image control means for sequentially acquiring X-ray images captured by the X-ray imaging apparatus and outputting the latest X-ray image to a first display;
A storage unit that stores a plurality of X-ray images that have been taken; and a second image control unit that outputs an X-ray image selected from the plurality of X-ray images stored in the storage unit to a second display. And
The second image control means includes:
When the X-ray image obtained by the first imaging is the first X-ray image,
A first mode in which an X-ray image output to the second display is automatically changed to the first X-ray image after the first imaging or after the second imaging is started;
A second mode in which an X-ray image output to the second display is not automatically changed to the first X-ray image even after the second imaging is started;
An image display control device comprising:     The image display control apparatus according to claim 1, wherein the X-ray image is a fluoroscopic image or a captured image composed of a plurality of frames. 2. The image display according to claim 1, wherein the first or second image control unit outputs an image indicating the first mode or the second mode together with an X-ray image. Control device. An X-ray imaging device;
The image display control device according to any one of claims 1 to 3,
An X-ray imaging system, wherein an input unit for switching between the first mode and the second mode is provided in the X-ray imaging apparatus.   The X-ray imaging apparatus includes an X-ray source, an X-ray detector that outputs X-ray images output from the X-ray source and transmitted through the subject, and outputs a high voltage to the X-ray source. A high voltage generator to be supplied, and an operation unit for setting conditions for the high voltage supplied by the high voltage generator, wherein the input means is arranged on the operation unit. The X-ray imaging system according to claim 4. The X-ray imaging apparatus;
The image display control device;
The first indicator;
The second indicator;
The X-ray imaging system according to claim 5, further comprising a monitor carriage that holds the first and second displays.

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