JP5614965B2 - X-ray diagnostic imaging equipment - Google Patents

Description

  The present invention relates to an X-ray image diagnostic apparatus, and more particularly to recording of a video signal obtained in a fluoroscopic mode.

  Conventionally, in X-ray fluoroscopy examinations / procedures, a fluoroscopy mode using relatively low-energy X-rays is first executed, and the fluoroscopy is performed at a desired shooting position and timing while the shooting position and timing are set. Switch from mode to shooting mode. Then, a high-contrast still image, that is, a photographed image, is projected onto the X-ray film by irradiating the subject with a relatively high energy X-ray pulse. A moving image obtained in such a fluoroscopic mode (hereinafter referred to as a “fluoroscopic image”) has been conventionally used only for the purpose of shooting position and shooting timing. However, due to rapid progress in technological development in recent years, Solid-state imaging devices such as charge transfer devices (CCD) with high pixel density have reached the practical range and have been actively adopted in digital X-ray diagnostic apparatuses. As a result, an image with little geometric distortion and good contrast can be obtained, the utility value of the fluoroscopic image is improved, and it has been used for diagnosis together with the photographed image. In particular, when performing a so-called contrast imaging method in which a contrast agent is injected into a blood vessel and observing the flow state thereof, the state of the contrast agent flow before and after the timing of taking a photographed image is observed as a cine image. In such a case, the utility value of the fluoroscopic image is high.

  By the way, the collected fluoroscopic images are recorded on a storage medium such as a video tape or a magnetic disk (video disk), and are appropriately reproduced. For example, Patent Document 1 includes management data in which a plurality of still images and a plurality of moving images, times when these still images and moving images are collected, and frame numbers added to the still images and the moving images are associated with each other. A management data creation unit to create, an Ix creation unit that creates an index image in which each still image is reduced and each reduced image is arranged in one frame, and a mouse for designating a desired reduced image of the index image; The moving image collected a predetermined time before the time when the still image specified by the mouse was collected is identified using the management data, and the identified moving image is read from the video disk recorder based on the identification information and displayed. An image recording / reproducing apparatus is disclosed.

JP-A-6-139287

  The recording of the surgical video is a useful material for improving the surgical technique in the future, and is important from the viewpoint of backward guidance, conference presentation, and informed consent.

  However, if an attempt is made to record a fluoroscopic image, if the entire time during the examination is recorded, an unnecessary video while X-ray fluoroscopy is not performed is also recorded. Therefore, in order to search and read out a desired perspective image from this unnecessary video, a rewind / fast forward function, a fast playback / fast rewind playback function, which are general functions, are used in a video disc player or the like, Nevertheless, the search / read operation has a problem that it takes a lot of time and effort. Further, in recent years, the image quality of X-ray image diagnostic apparatuses has been improved, and there is a problem that if the image is recorded without deterioration, the capacity of the recorded file becomes large.

  The present invention has been made in view of the above problems, and an object thereof is to provide an X-ray diagnostic imaging apparatus that records only a desired fluoroscopic image among fluoroscopic images.

  In order to solve the above-described problems, an X-ray diagnostic imaging apparatus according to the present invention is arranged to face an X-ray irradiation unit that irradiates X-rays and the X-ray irradiation unit across the subject, and transmits the subject. An X-ray detector that detects transmitted X-rays and outputs a transmitted X-ray signal, generation means for generating a video signal based on the transmitted X-ray signal, and an instruction to execute a fluoroscopic mode for obtaining the video signal And a recording unit that starts recording the video signal as a moving image when an instruction to execute the fluoroscopy mode is input from the fluoroscopic instruction unit.

  The X-ray diagnostic imaging apparatus according to the present invention detects X-ray irradiation means for irradiating X-rays, and transmitted X-rays that are disposed so as to face the X-ray irradiation means with the subject interposed therebetween. An X-ray detector that outputs a transmitted X-ray signal, a generating unit that generates a video signal in which a transmitted X-ray image including a moving image of the subject is displayed based on the transmitted X-ray signal, and the video Luminance determination means for determining whether or not a value indicating the luminance of the signal is equal to or greater than a predetermined value; and when the value indicating the luminance of the video signal is equal to or greater than the predetermined value, recording of the video signal is started, And recording means for stopping recording of the video signal when the value indicating the luminance of the video signal is less than the predetermined value.

  According to the present invention, it is possible to record only the video signal obtained when X-ray fluoroscopy is performed using the input of the fluoroscopic instruction means or the luminance of the video signal. Therefore, it is possible to record only a desired fluoroscopic image without recording an unnecessary video while X-ray fluoroscopy is not performed.

Schematic of the X-ray diagnostic imaging apparatus 1 according to the present invention Explanatory drawing which shows the process from the test | inspection start of a recording control apparatus which concerns on 1st Embodiment to the completion | finish of a test | inspection. The flowchart which shows the flow of a process of the X-ray image diagnostic apparatus which concerns on 1st Embodiment. Explanatory drawing which shows the process from the test | inspection start of a recording control apparatus concerning 2nd Embodiment to the completion | finish of a test | inspection. The flowchart which shows the flow of a process of the X-ray image diagnostic apparatus which concerns on 2nd Embodiment. The figure which shows the connection method of the file in a recording control apparatus The figure which shows the connection method of the file in a recording control apparatus The figure which shows the connection method of the file in a recording control apparatus The figure which shows the connection method of the file in a recording control apparatus The figure which shows the connection method of the file in a recording control apparatus Explanatory drawing which shows the process from the test | inspection start of a recording control apparatus concerning 3rd Embodiment to the completion | finish of a test | inspection. Explanatory drawing which shows the process from the test | inspection start of a recording control apparatus concerning 4th Embodiment to the completion | finish of a test | inspection. The flowchart which shows the flow of a process of the X-ray image diagnostic apparatus which concerns on 4th Embodiment.

  Hereinafter, embodiments to which the present invention is applied will be described. Hereinafter, in all the drawings for explaining the embodiments of the present invention, those having the same function are denoted by the same reference numerals, and repeated explanation thereof is omitted.

  The X-ray image diagnostic apparatus 1 according to the present invention performs fluoroscopy, that is, an examination that exposes X-rays to a subject and obtains a video signal composed of a moving image, and also performs radiographing, that is, from a larger dose than during fluoroscopy. This is a device that can perform an examination to obtain an X-ray image consisting of a still image by exposing the subject X-ray to a subject, and is a device that records a video signal obtained from fluoroscopy. In the following description, “inspection” is used as a general term for a series of fluoroscopy and / or imaging flows including multiple fluoroscopy and imaging. Hereinafter, based on FIG. 1, the structure of the X-ray-image diagnostic apparatus 1 which concerns on this invention is demonstrated. FIG. 1 is a schematic view of an X-ray image diagnostic apparatus 1 according to the present invention.

  The X-ray image diagnostic apparatus 1 includes a recording control apparatus 10, an image processing apparatus 11, and a component I / F 12. Further, as components having individual functions, a bed apparatus 13, a panel computer 14, an X-ray generator 15, an X-ray detector 16, a fluoroscopic switch 17 for inputting start and end of fluoroscopic mode execution, and execution of an imaging mode. A photographing switch 18 for inputting start and end is provided. Each of these components is connected to the component I / F 12. Then, the component I / F 12 and the image processing apparatus 11 are connected, and the recording control apparatus 10 is connected to the image processing apparatus 11 to configure the X-ray image diagnostic apparatus 1.

  The image processing apparatus 11 generates a video signal field image signal in which an X-ray image is reflected based on a transmitted X-ray signal obtained by X-ray imaging, and performs processing for making the image easy to see as necessary. In addition to making it easy to see, it is used for obtaining useful medical image information by inputting necessary interpretation findings or intentionally enhancing only necessary information.

  The image processing apparatus 11 includes a monitor 111 for displaying an operation screen, and a mouse 112 and a keyboard 113 for receiving an operator's input operation. The operator can execute various image processing functions in the image processing apparatus 11 by operating the input device of the mouse 112 and the keyboard 113 and the panel computer 14 while checking the operation screen displayed on the monitor 111. .

  The bed apparatus 13 is a mechanism for laying the subject on the bed and moving the bed or changing the angle of the bed so that the X-ray imaging region and the X-ray irradiation field coincide with each other.

  The panel computer 14 is provided to control operations related to X-ray imaging performed by the X-ray image diagnostic apparatus 1. The panel computer 14 is connected to the component I / F 12 and performs reading and setting of setting conditions of each component and operation control. The panel computer 14 is also provided with an interface for directly changing the setting of image processing conditions in the image processing apparatus 11. When the setting conditions for image processing in the image processing apparatus 11 are changed by operating the panel computer 14, setting information is transmitted to the image processing apparatus 11 via the component I / F 12. That is, by operating the panel computer 14, various image processing functions in the image processing apparatus 11 can be executed.

  The X-ray generator 15 generates X-rays in X-ray imaging, and performs exposure toward the imaging target region of the subject.

  The X-ray detector 16 detects X-rays transmitted through the subject and outputs a transmitted X-ray signal, such as an FPD (Flat Panel Detector) or a combination of an image intensifier and a TV camera. Any aspect may be used as long as it can detect a transmission X-ray of the subject and generate a transmission X-transmission signal or a video signal as a base of the video signal. Further, the component I / F 12 is irradiated with a relatively low energy X-ray on the subject, and a fluoroscopic switch 17 for executing and stopping a fluoroscopic mode for outputting a video signal based on the transmitted X-ray signal, and the fluoroscopic mode An imaging switch 18 is connected to execute and stop an imaging mode that irradiates the subject with X-rays having higher energy than the time and outputs a still image based on the transmitted X-ray signal. If the photographing switch 18 is turned on while the fluoroscopic mode is being executed, the fluoroscopic mode is stopped and the photographing mode is executed even if the fluoroscopic switch 17 does not turn the fluoroscopic mode off.

  The recording control apparatus 10 captures (captures) a video signal obtained from the CPU 100 that performs operation control of image recording by the recording control apparatus 10 and other arithmetic / control processing necessary for the operation of the recording control apparatus 10. A capture board 101; a memory 102 that temporarily records data; a memory 102 that functions as a buffer; a hard disk 103 that records a video signal fixedly; and an operation program of the recording control device 10; and a recording control device 10 displays an operation screen necessary for recording a video signal, a monitor 104 for displaying a moving image file or an image file, a mouse 105 and a keyboard 106 for accepting an operator's input operation, and start of fluoroscopy Video signal capture start is triggered by the signal, fluoroscopy end signal, or shooting start signal. And a fluoroscopic signal changeover switch 107 for outputting an instruction signal ends, and is made of.

  In addition, an endoscope image capturing apparatus 50 is connected to the image processing apparatus 11 of the X-ray image diagnostic apparatus 1 according to a third embodiment to be described later. Then, the image processing apparatus 11 combines the fluoroscopic image generated by the X-ray image diagnostic apparatus 1 generated at the same time and the endoscope video signal sent from the endoscope image capturing apparatus 50 on one screen. A composite video signal (Picture in Picture) in which a fluoroscopic image and an endoscopic image are simultaneously displayed is generated. This synthesized video signal is also recorded by the recording control device 10.

  The image processing apparatus 11 generates a first video signal on which a transmitted X-ray image made up of a moving image of a subject is projected based on the transmitted X-ray signal transmitted from the X-ray detector 16, and X-rays Based on the transmitted X-ray signal transmitted from the detector 16, a generating unit that generates an image signal obtained by capturing a transmitted X-ray image composed of a still image of the subject, and a video signal combining process performed in the third embodiment The program which consists of a synthetic | combination part which performs is stored. Then, the program is executed by the arithmetic / control device provided in the image processing apparatus 11, whereby the program and the hardware configuring the image processing apparatus 11 cooperate to realize the function of the program.

  In the present embodiment, an FPD is used as the X-ray detector 16, and the image processing apparatus 11 is configured to generate a fluoroscopic image based on transmitted X-ray signals sequentially read from the FPD. However, instead of the X-ray detector composed of the FPD, it may be configured by a combination of an image intensifier that converts the detected transmitted X-rays into a visible light image and a television camera. In this case, since the video signal based on the transmitted X-ray signal of the subject is output from the television camera, the image processing apparatus 11 may not include the above-described generation unit.

  In addition, the recording control apparatus 10 acquires object identification information including unique information that can identify the object from the X-ray image diagnostic apparatus 1, and obtains the video signal obtained in the fluoroscopic mode or the imaging mode. A writing unit that writes the obtained image signal to the hard disk 103 as a moving image file or an image file with a file name using the subject identification information, and a plurality of moving image files are connected to each other, or one or more moving image files and one A program including a file linking unit that links two or more image files to generate a linked file is stored. The file connection unit may have a function of selecting a moving image file to be connected according to a set selection condition. Further, after the generation of the connection file, the file connection unit deletes the moving image file and the image file (hereinafter also referred to as “original file”) written in the hard disk 103 when the perspective mode and the shooting mode to be connected are executed. A function may be provided. Furthermore, the file connection unit may have a function of generating an index table that defines the connection order of the moving image file and the image file. Then, a function may be provided in which a moving image file and a still image file are reproduced and displayed on the monitor 104 connected to the recording control device 10 in the order defined in the index table. When these programs are executed by an arithmetic / control device (corresponding to the CPU 100) provided in the recording control device 10, the program and the hardware constituting the recording control device 10 cooperate to realize the function of the program. To do.

<< First Embodiment >>
Next, based on FIG.2 and FIG.3, 1st Embodiment is described. The first embodiment is an embodiment in which a video signal obtained by performing fluoroscopy with the X-ray image diagnostic apparatus 1 is recorded in the recording control apparatus 10. FIG. 2 is an explanatory diagram illustrating a process from the inspection start to the inspection end of the recording control apparatus according to the first embodiment. FIG. 3 is a flowchart showing a process flow of the X-ray image diagnostic apparatus according to the first embodiment.

  In the video signal 20 of FIG. 2, the video signal from the inspection start time t1 to the time t2 when the fluoroscopy starts is composed of only a screen that is completely dark. The video signal 20 from the time t2 when the operator presses the fluoroscopic switch 17 to “transparent ON” to the time t3 when the operator stops pressing the fluoroscopic switch 17 and becomes “fluoroscopic OFF” shows a fluoroscopic image. ing. The video signal 20 from t3 when “fluoroscopy is turned off” to t4 when “fluoroscopy is turned on” for the second time is composed of only a dark screen like the video signal from t1 to t2 when fluoroscopy starts. The During this time, the posture of the subject is changed, or in fluoroscopic imaging of the upper digestive organs, a contrast agent is added and taken, and preparations for subsequent fluoroscopy are performed. From the time t4 when “fluoroscopy ON” is performed for the second time to time t5 when “fluoroscopy OFF” is performed, a fluoroscopic image obtained by seeing through the subject again is reflected in the video signal 20. Similarly to the above, the video signal 20 is composed of a completely dark screen from t5 to t6, and a fluoroscopic image of the subject obtained by the third fluoroscopy is displayed on the video signal 20 from t6 to t7. ing.

  Therefore, the recording control apparatus 10 according to the first embodiment creates a moving image file in which a fluoroscopic image of a subject is recorded for the number of X-ray fluoroscopy performed within one examination. In FIG. 2, in one inspection (corresponding to from t1 to t8 in FIG. 2), a total of three times from t2 to t3, from t4 to t5, and from t6 to t7 Fluoroscopy is performed. Therefore, the recording control apparatus 10 uses “subject number 000001”, which is unique information that can identify the subject, as the file name of the moving image file, and writes the video signal 20 obtained by each fluoroscopy to the hard disk 103. . In addition to the subject number, the file name also gives a number indicating the order in which the files were generated in the same examination. As a result, in FIG. 2, three moving image files 25, 26, and 27 are generated, and the file names of the files are “000001 — 01”, “000001 — 02”, and “000001 — 03”.

  These moving image files 25, 26, and 27 are stored in the first hierarchy folder generated for each date in the hard disk 103 that has been generated in advance, for example, the folder number “20091001”, and the subject number is the folder name. The second hierarchy folder “subject number 000001” used as the above is generated, and the three moving image files 25, 26, and 27 are generated and recorded in the second hierarchy folder “subject number 000001”. Thereby, even when the same subject is examined on different days, the moving image file names do not conflict. In the present embodiment, the second hierarchy folder is generated using only the subject number. However, in addition to the subject number, a serial number of examinations performed on the examination day may be added. Thereby, even when the same subject receives a plurality of examinations on the same day, the file name of the moving image file can be uniquely generated.

  Hereinafter, operation processing of the X-ray image diagnostic apparatus 1 according to the present embodiment will be described along each step of the flowchart of FIG. 3.

  Prior to the start of the examination, when the power of the X-ray diagnostic imaging apparatus 1 is turned on, a transmitted X-ray signal from the X-ray detector 16 is transmitted to the image processing apparatus 11 via the component I / F 12 and an image is obtained. The processed signal 11 generates a video signal 20 based on the output signal of the X-ray detector 16. The generated video signal 20 is output to the recording control apparatus 10. In this state, the X-ray diagnostic imaging apparatus 1 enters a standby state. Since the video signal 20 in the standby state does not include the transmitted X-ray signal in the output signal from the X-ray detector 16, it is configured as a continuous dark screen. The operator places the subject on the top plate of the bed apparatus 13 and prepares for examination.

(Step S1)
The operator inputs “subject number 000001”, which is unique information that can identify the subject, from the panel computer 14 and starts the examination (S1).

(Step S2)
The recording control apparatus 10 acquires “subject number 000001” via the component I / F 12 and the image processing apparatus 11, and records it in the memory 102, which is a buffer (S2).

(Step S3)
If the operator turns on the fluoroscopic switch 17, the process proceeds to step S4, and if not, the process proceeds to step S7 (S3).

(Step S4)
The output signal from the X-ray detector 16 is transmitted to the image processing device 11 continuously from the start of the X-ray imaging inspection (at time t1), and the generation unit in the image processing device 11 generates the video signal 20. Are continuously transmitted to the recording control apparatus 10. In this state, in this step, the recording control device 10 starts recording the video signal 20 with the operation of the operator turning on the fluoroscopic switch 17 as a trigger (S4).

  More specifically, when the operator turns on the fluoroscopic switch 17 (corresponding to t2 in FIG. 2), a fluoroscopic start signal is output from the fluoroscopic switch 17. Then, the X-ray is emitted from the X-ray generator 15 to the subject, the X-ray detector 16 detects the transmitted X-ray, and the transmitted X-ray signal is output to the image processing apparatus 11 via the component I / F 12. Is done. The image processing apparatus 11 generates a video signal 20 that shows a fluoroscopic image of the subject based on the transmitted X-ray signal, and transmits the video signal 20 to the recording control apparatus 10. The fluoroscopic signal changeover switch 107 detects the fluoroscopic start signal output from the fluoroscopic switch 17, and outputs a capture instruction and recording start instruction signal of the video signal 20 to the recording control device 10. In response to the input of the start instruction signal, the CPU 100 causes the capture board 101 to start capturing (capturing) the video signal 20. The writing unit in the recording control apparatus 10 writes the captured video signal 20 on the hard disk 103 using the file name assigned with the subject number recorded in the memory 102.

(Step S5)
When the operator turns the fluoroscopic switch 17 OFF, the process proceeds to step S6. If the operator remains ON (from t2 to t3 in FIG. 2), the X-ray exposure and X-ray image capture and the recording control device 10 are performed. The video signal 20 is continuously captured and written to the hard disk 103 (S5).

(Step S6)
When the operator turns off the fluoroscopic switch 17 (corresponding to t3 in FIG. 2), a fluoroscopic end signal is output from the fluoroscopic switch 17, and the X-ray exposure from the X-ray generator 15 is terminated accordingly. At the same time, the fluoroscopic signal changeover switch 107 outputs a recording end instruction signal for the video signal 20 to the recording control device 10, and the capture of the video signal 20 in the recording control device 10 and the writing to the hard disk 103 are completed (S6). .

(Step S7)
When the inspection is finished, a series of processing is finished. If the inspection is not completed, the process returns to step S3. If necessary, the second and subsequent fluoroscopy is performed (S7).

  According to the present embodiment, since the ON / OFF of the fluoroscopic switch 17 also serves as an operation of capturing and recording the video signal 20 by the recording control device 10, the operator operates the fluoroscopic switch 17. Only the start and end of recording of the video signal 20 can be instructed, and the operability is improved.

  In addition, it is possible to record only intraoperative images without recording unnecessary images while not performing fluoroscopy, and the file capacity can be reduced. Even when a moving image file is played back, only the necessary video can be played back, and there is no need to search for the video signal 20 recorded at the time when the fluoroscopic image is shown from a completely dark screen. No need to worry about work.

  Further, since the recorded file name is assigned a subject number, it is easy to confirm the necessary recording after the examination.

<< Second Embodiment >>
In the second embodiment, the files recorded on the hard disk 103 during the inspection are connected at the end of the inspection, and one concatenated file 35 is generated. The second embodiment will be described below with reference to FIGS. FIG. 4 is an explanatory diagram illustrating a process from the inspection start to the inspection end of the recording control apparatus according to the second embodiment. FIG. 5 is a flowchart showing a process flow of the X-ray image diagnostic apparatus according to the second embodiment. 6, 7, 8, 9, and 10 are diagrams showing a file connection method in the recording control apparatus. Hereinafter, it demonstrates along each step of FIG.

  Steps S1 to S7 are the same as those in the first embodiment.

(Step S8)
In step S8, it is determined whether there are two or more files. If the result is affirmative, the process proceeds to step S9. If the result is negative, that is, if there is only one file, the connection process is unnecessary and the process ends. . In this step, the CPU 100 refers to the folder “subject number 000001” in the hard disk 103 and determines whether there are a plurality of files (S8).

(Step S9)
In step S9, a plurality of files generated in one examination are connected to generate one connected file (S9). In the following example, the file connecting unit of the recording control apparatus 10 connects the three moving image files 25, 26, and 27 shown in FIG.

  The contents of the connection process will be described with reference to FIGS. 4 and 6 to 10. At the end of the inspection in FIG. 4 (at time t8), files corresponding to the number of X-ray fluoroscopy performed in the inspection are recorded on the hard disk 103. When all the files are connected to the memory 102 on the read memory, all the files cannot be expanded on the memory 102 as the file capacity increases.

  Therefore, as shown in FIG. 6, first, the file concatenation unit reads only the header portion of each moving image file into the memory 102, and collects data pointers indicating the addresses on the hard disk 103 of the data to which the respective headers are attached. A table 30 is created on the memory 102. In the index table 30, data pointers of respective files to be linked are recorded. For example, the moving image file 25 includes a header part “header 1” and a data part “data 1”. Therefore, the file concatenation unit reads the header 1 and generates a “data 1-pointer” describing the address of the data 1 based on the header 1. Similar processing is performed for the moving image files 26 and 27. As a result, the index table 30 includes “data 1-pointer”, “data 2-pointer”, and “data 3-pointer”.

  Subsequently, as illustrated in FIG. 7, the file connection unit writes a new header in the hard disk 103. At that time, since the entire length of the data part after the connection is obtained from the index table 30, an area for that is reserved in advance. In FIG. 7, the file linking unit writes “header 4” to the hard disk 103 as a new header. At that time, areas of the entire length of “data 1”, “data 2”, and “data 3” are secured.

  Thereafter, as shown in FIG. 8, the file linking unit reads the data portion of each moving image file 25, 26, 27 from the hard disk 103, refers to the index table 30, and follows the order in which the data pointer of each moving image file is written. The contents of the data portion of each moving image file are written into the hard disk 103. When the capacity of the data portion of one file is larger than the capacity that can be expanded in the memory, the file is divided into arbitrary sizes and expanded on the memory. In FIG. 8, the file linking unit reads “data 1” from the hard disk 103 based on “data 1-pointer” and expands it on the memory 102. Then, “Data 1” is written in the position of “Data 1-Pointer” in the Intex table 30, that is, immediately below the header “Header 4” of the linked file. For the remaining moving image files 26 and 27 in FIG. 8, the same processing as that of the moving image file 25 is repeated, and all data portions are written.

  Subsequently, as shown in FIG. 9, the file linking unit releases the data in the index table 30 of the memory 102, and assigns the subject number “000001” as the file name to the newly created file.

  According to the present embodiment, since a plurality of moving image files 25, 26, and 27 created by one inspection become one linked file 35, the handling of the files becomes easy. In addition, if only the linked file 35 is played when the file is played, all the necessary fluoroscopic images can be seen, so that the time efficiency of the diagnosis can be improved.

  In the second embodiment, the moving image files 25, 26, and 27 are recorded on the hard disk 103 without being deleted even after the linked file 35 is generated. As a result, the original data generated at the time of inspection can be recorded and used as a backup file.

  As a modification of the second embodiment, the moving image files 25, 26, and 27 may be deleted after the linked file 35 is generated. As a result, it is possible to secure a larger amount than when not deleting the free area of the hard disk 103.

  Moreover, in the said 2nd Embodiment, although all the moving image files 25, 26, and 27 obtained in one test | inspection were connected, you may select the file used as connection object based on recording time. That is, you may make it connect only the moving image file whose recording time is less than predetermined time. For example, if the predetermined time is 5 minutes, the recording time of the moving image file 25 is 4 minutes, the recording time of the moving image file 26 is 6 minutes, and the recording time of the moving image file 27 is 3 minutes 30 seconds, the CPU 100 records each file. The time is calculated from the time information written in the header of each file, and the video files 25 and 27 are connected to generate a linked file. The video file 26 records the original video file obtained at the time of fluoroscopy. You may keep it. Thereby, it is possible to prevent the linked file from becoming redundant. The predetermined time may be set as appropriate according to the type of examination or procedure.

  In addition to the threshold value set for the recording time of the video signal, a threshold value may be set for the file capacity of one moving image file as a selection condition for the file to be connected. Usually, when the same number of pixels and frame rate are used, the longer the recording time, the larger the file capacity. Therefore, it is possible to prevent the connected files from becoming redundant by setting only the moving image files having a predetermined capacity or less as the connection targets.

  Further, after generating the index table 30, the index table 30 may be written to the hard disk 103 (FIG. 10). When the linked file is played back, the index table 30 may be read out, and the data portions of the moving image files 25, 25, and 27 may be played back in order according to the description order of the data pointer in the index table 30. As a result, the original data portion obtained at the time of fluoroscopy can be recorded on the hard disk 103 without duplication, and the data portions of the original moving image files 25, 26, and 27 can be reproduced when the linked file is reproduced.

<< Third Embodiment >>
In the third embodiment, an endoscopic image capturing device 50 is connected to the image processing device 11 to generate a composite video signal obtained by synthesizing an endoscopic image and a fluoroscopic image, and generated while the fluoroscopic switch 17 is ON. In this embodiment, only the synthesized video signal is recorded in the recording control device 10. Hereinafter, a third embodiment will be described with reference to FIG. FIG. 11 is an explanatory diagram illustrating a process from the inspection start to the inspection end of the recording control apparatus 10 according to the third embodiment.

  When the examination is started, an endoscope video signal 51 is continuously transmitted from the endoscope image capturing device 50 to the image processing device 11. The endoscope video signal 51 is a moving image in which an endoscope image 52 is reflected. The image processing apparatus 11 receives the endoscope video signal 51 and simultaneously receives the output signal from the X-ray detector 16 to generate the video signal 20. This video signal 20 is the same video signal 20 as in the first and second embodiments. When the fluoroscopic switch 17 is OFF, it is displayed as a dark signal in which nothing is reflected, and when the fluoroscopic switch 17 is ON. Is a video signal 20 showing a fluoroscopic image of the subject.

  The synthesizing unit of the image processing apparatus 11 generates a synthesized video signal 60 in which the endoscopic image 52 and the fluoroscopic image are displayed on one screen, and transmits the synthesized video signal 60 to the recording control apparatus 10. The composite video signal 60 is a perspective image constituted by a completely dark screen while the fluoroscopic switch 17 is OFF, that is, from t1 to t2, from t3 to t4, from t5 to t6, and from t7 to t8. The composite image 61 is composed of an image display area 20a and an endoscope display area on which an endoscope image 52 is displayed. The composite video signal 60 is displayed as a fluoroscopic image 20b and an endoscopic image 52 while the fluoroscopic switch 17 is ON, that is, from t2 to t3, from t4 to t5, and from t6 to t7. Composed of the synthesized image 62.

  An operation process according to the third embodiment will be described. The composite video signal 60 is transmitted from the image processing apparatus 11 to the recording control apparatus 10 continuously from the start of the inspection. Here, when the operator turns on the fluoroscopic switch 17, the recording control apparatus 10 starts capturing the composite video signal 60 and writes it to the hard disk 103. When the operator turns off the fluoroscopic switch 17, the capture and writing of the composite video signal 60 of the recording control device 10 is completed. As a result, only the composite video signal 60 composed of the composite image 62 is recorded on the hard disk 103 as one moving image file 65, 66, 67 for each perspective. Further, as in the second embodiment, the linked composite file 68 may be generated by connecting the moving image files 65, 66, and 67 created for each perspective.

  In the present embodiment, when an X-ray image diagnostic apparatus 1 and a medical image imaging apparatus different from the X-ray image diagnostic apparatus 1 are combined to perform examinations or procedures, the X-ray image diagnostic apparatus 1 and the medical image imaging apparatus described above are used. The synthesized video signals 60 can be recorded in accordance with the fluoroscopic timing of the X-ray image diagnostic apparatus 1. Therefore, the composite video signal 60 in which the fluoroscopic image is not reflected is not recorded, and it is possible to save the capacity of the hard disk 103 and to save the trouble of searching for a desired video signal from unnecessary video signals when the composite video signal 60 is reproduced. be able to.

  In the present embodiment, by including the video signal 20 obtained in the perspective mode in the composite video signal 60, only the composite video signal 60 is output from the image processing device 11 to the recording control device 10. At the same time, the video signal 20 obtained in the fluoroscopic mode may be output at the same time, and the recording control apparatus 10 may be configured to record the composite video signal 60 and the video signal 20 obtained in the fluoroscopic mode.

  In the above-described embodiment, the endoscopic image imaging device 50 is used as a medical image imaging device different from the X-ray image diagnostic device 1. However, the medical image imaging device is a medical device for a subject such as an MRI or an ultrasonic diagnostic device. Any device can be used as long as it can obtain a video signal. The medical video signal and the video signal obtained in the fluoroscopic mode may be combined.

<< Fourth Embodiment >>
The fourth embodiment is an embodiment in which shooting is performed during fluoroscopy, capturing of the video signal 20 of the recording control apparatus 10 is ended by turning on the shooting switch 18, and a still image is recorded on the hard disk 103. Hereinafter, a fourth embodiment will be described with reference to FIGS. 12 and 13. FIG. 12 is an explanatory diagram illustrating a process from the inspection start to the inspection end of the recording control apparatus according to the fourth embodiment. FIG. 13 is a flowchart showing a flow of processing of the X-ray image diagnostic apparatus according to the fourth embodiment. Hereinafter, it demonstrates along each step of FIG.

  Steps S1 to S4 are the same as in the first embodiment.

(Step S10)
In step S4, fluoroscopy is performed, and after recording of the video signal 20 is started in the recording control apparatus 10, when the operator turns “shooting switch 18 ON”, the process proceeds to step S11. If "ON" is not set, the process proceeds to step S12 (S10).

(Step S11)
Continuing from the start of video recording in step S4, the transmitted X-ray signal from the X-ray detector 16 is transmitted to the image processing device 11, and the video signal 20 is generated in the image processing device 11 and also sent to the recording control device 10. The video signal 20 is captured and recorded. In this state, in this step, the recording control device 10 completes the recording of the video signal 20 and the imaging of the X-ray image including the still image is executed with the operation of the operator turning on the imaging switch 18 as a trigger. (S11).

  More specifically, when the operator turns on the shooting switch 18 (corresponding to t3 in FIG. 12), a shooting instruction signal is output from the shooting switch 18. Then, X-rays with an intensity corresponding to preset imaging conditions are exposed to the subject from the X-ray generator 15, and the X-ray detector 16 detects the transmitted X-rays and passes through the component I / F 12. The transmitted X-ray signal is output to the image processing apparatus 11 (corresponding to t3 ′ in FIG. 12). The image processing device 11 generates an X-ray image composed of a still image of the subject based on the transmitted X-ray signal, and transmits the X-ray image to the recording control device 10.

  On the other hand, when a photographing instruction signal is output from the photographing switch 18, the fluoroscopic signal changeover switch 107 outputs a capture end instruction signal, and the CPU 100 of the recording control apparatus 10 captures (captures) the video signal 20 by the capture board 101. ). Then, the video signal 20 written in the hard disk 103 until just before the end is recorded as one moving image file. In FIG. 12, this moving image file corresponds to the moving image file 25 having the file name “000001_01”.

  The image processing apparatus 11 transmits a still image obtained by photographing to the recording control apparatus 10, and the recording control apparatus 10 attaches a file name “000001 — 02” to the still image and writes it as an image file 70 in the hard disk 103.

(Steps S12 and 13)
When the fluoroscopic switch 17 is turned off, the process proceeds to step S13, and the recording of the video signal 20 is finished. If the fluoroscopic switch 17 is not turned off, the fluoroscopic execution state continues (S12).

  Subsequently, similarly to the first embodiment, the processes of steps S7 and S8 are executed.

(Step S9 ')
As shown in FIG. 12, in addition to the moving image files 25, 26, and 27, the hard disk 103 also stores the image file 70 generated in step S11.

  Therefore, the storage control device 10 generates a concatenated file 71 in which the moving image file 25, the image file 70, the moving image file 26, and the moving image file 27 are connected in this order (S9 ').

  The contents of the concatenation process are almost the same as in the second embodiment, and the file concatenation unit generates the index table 30 by adding the information of the header part of the image file 70, and the image file 70 is based on the index table 30. A concatenated file is generated by writing the data part.

  According to the present embodiment, the capture and recording of the video signal 20 obtained by fluoroscopy is completed only by operating the photographing switch 18, and a still image obtained by photographing is recorded in the recording control device 10 instead. it can. Therefore, the recording end of the video signal 20 obtained by fluoroscopy and the recording of the still image obtained by photographing can be performed by one operation, and the operability is improved.

  In addition, by including the still image 70 in the linked file 71, the still image 70 can be confirmed by playing only the linked file 71 even when a series of examinations or procedures are taken from fluoroscopy or when fluoroscopy is resumed. This makes it easier to grasp at which stage the still image is obtained in a series of examinations or procedures.

<< Fifth Embodiment >>
In the above-described embodiment, the start and end of the capture of the video signal 20 in the recording control apparatus 10 is performed using the ON / OFF of the fluoroscopic button 17 or the ON of the shooting button 18 as a trigger. The start and end of capture and recording are controlled based on the luminance of the signal.

  The X-ray diagnostic imaging apparatus 1 according to the fifth embodiment detects the luminance value of the video signal in the recording control apparatus 10 instead of the fluoroscopic signal changeover switch 107 in the X-ray diagnostic imaging apparatus 1 of FIG. A luminance determination unit that compares the detected luminance value with a predetermined value set in advance, and when the luminance value is equal to or greater than the predetermined value, starts capturing the video signal, and when the luminance value is less than the predetermined value, the video signal And a capture control unit for ending the capture of the program. These programs are executed by the arithmetic / control device provided in the recording control device 10, whereby the program and hardware constituting the recording control device 10 cooperate to realize the functions thereof. .

  The predetermined value is such that the video signal that does not show the fluoroscopic image is composed of a completely dark screen, and the luminance is lower than the image that shows the fluoroscopic image, so that the portion where the fluoroscopic image is reflected and the portion that is not Is set in advance to detect a difference in luminance that can be distinguished from each other. When the video signal 20 is input from the image processing device 11, the luminance determination unit of the recording control device 10 detects the luminance of the video signal 20, and the capture control unit starts capturing and recording according to the luminance. Control termination. In addition to the video signal 20, the luminance of the image signal may also be determined, and an image file may be added to the present embodiment.

  According to the present embodiment, the video signal can be captured in accordance with the execution of the fluoroscopic mode only by revising the program of the recording control apparatus 10, and compared with the renovation of hardware such as the fluoroscopic signal changeover switch 107. The man-hour accompanying implementation of this invention can be reduced.

  In addition, each embodiment described in the second, third, and fourth embodiments can be applied to the X-ray image diagnostic apparatus 1 according to the fifth embodiment.

1: X-ray image diagnostic apparatus, 10: recording control apparatus, 11: image processing apparatus, 12: component I / F, 13: bed apparatus, 14: panel computer, 15: X-ray generator, 16: X-ray detector , 17: fluoroscopic switch, 18: photographing switch, 50: endoscopic imaging device, 100: CPU, 101: capture board, 102: memory, 103: hard disk, 104: monitor, 105: mouse, 106: keyboard, 107 : Fluoroscopic signal changeover switch, 111: monitor, 112: mouse, 113: keyboard

Claims (8)

X-ray irradiation means for irradiating X-rays;
An X-ray detector disposed opposite to the X-ray irradiating means across the subject, detecting transmitted X-rays transmitted through the subject and outputting a transmitted X-ray signal;
Video signal generating means for generating a video signal based on the transmitted X-ray signal;
Input means for inputting an instruction to execute and end the fluoroscopic mode for obtaining the video signal and an instruction to execute an imaging mode for obtaining an image signal composed of a still image of the subject;
Recording the video signal obtained from the instruction to execute the fluoroscopic mode from the input unit to the end instruction as a moving image file, and recording the image signal obtained by executing the shooting mode as an image file Means,
File concatenation that generates a single concatenated file by concatenating a plurality of video files and / or image files when there are a plurality of video files and / or image files recorded in the recording means in one inspection. Means,
With
The file connection means selects a video file whose recording time of the video signal is shorter than a predetermined time, and connects only the selected video file;
Alternatively, the file connecting unit selects a moving image file smaller than a predetermined file capacity, and connects only the selected moving image file, and the recording unit records the connecting file generated by the file connecting unit. An X-ray image diagnostic apparatus characterized by: The moving image file includes a data portion in which the video signal is written and a header portion in which the address of the data portion on the recording unit is described. The image file is data in which the image signal is written. Part and a header part describing the address of the data part on the recording means,
The file linking means refers to the header portion that constitutes the moving image file and the image file to be linked, and has a pointer indicating the address of the data portion that constitutes the moving image file and the image file to be linked. , Generating an index table arranged in the order of concatenation, and generating the concatenated file based on the index table;
The X-ray image diagnostic apparatus according to claim 1. The file connection means generates the connection file by writing the moving image file to be connected and the data portion of the image file in the recording means according to the order of the pointers described in the index table.
The X-ray image diagnostic apparatus according to claim 2. The file connection means is the moving image file that is recorded in the recording means when the fluoroscopic mode is executed and becomes the connection target, and the image that is recorded in the recording means when the shooting mode is executed and becomes the connection target Delete the file after generating the concatenated file;
The X-ray image diagnostic apparatus according to claim 3. The file connection means records the index table in the recording means, and is recorded in the recording means during execution of the fluoroscopic mode according to the order of the pointers described in the index table during playback of the connection file. Generating the linked file by reading out and playing back the data portion of the moving image file and the data portion of the image file recorded in the recording means during execution of the shooting mode;
The X-ray image diagnostic apparatus according to claim 2. The X-ray diagnostic imaging apparatus further includes input means for inputting subject identification information including unique information for identifying the subject,
The recording means acquires the subject identification information, and uses the subject identification information as file names of the moving image file, the image file, and the linked file.
The X-ray image diagnosis apparatus according to claim 1 , wherein the X-ray image diagnosis apparatus is one. The X-ray diagnostic imaging apparatus acquires a second video signal obtained by a medical imaging apparatus different from the X-ray diagnostic imaging apparatus during execution of the fluoroscopic mode, and the video signal and the second video signal And combining means for generating a combined video signal for simultaneously displaying a moving image based on the video signal and a moving image based on the second video signal on a screen of a display means for displaying the moving images. In addition,
The recording means starts recording the composite video signal when an instruction to execute the fluoroscopic mode is input from the fluoroscopic instruction means.
The X-ray image diagnostic apparatus according to claim 1. X-ray irradiation means for irradiating X-rays;
An X-ray detector disposed opposite to the X-ray irradiating means across the subject, detecting transmitted X-rays transmitted through the subject and outputting a transmitted X-ray signal;
Generating means for generating a video signal in which a transmission X-ray image composed of a moving image of the subject is projected based on the transmission X-ray signal;
Luminance determination means for determining whether or not a value indicating the luminance of the video signal is equal to or greater than a predetermined value;
Recording of the video signal is started when the value indicating the luminance of the video signal is equal to or greater than the predetermined value, and recording of the video signal is stopped when the value indicating the luminance of the video signal is less than the predetermined value. Recording means to
An X-ray diagnostic imaging apparatus comprising:

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