JPH05285099A - Roentgenoscopic apparatus for endoscope diagnosis - Google Patents

Abstract

PURPOSE:To prevent adverse effect on a human body by an X-ray dose or residual X-ray dose. CONSTITUTION:In this invention, a detection means 14 is arranged to detect a residual X-ray dose of X rays irradiated by an X-ray irradiation means 2a. When the X-ray dose detected by the detection means 14 exceeds a prescribed value, an operator is warned about a dangerous condition by displaying on a display device 11. By the notification of danger on the display device 11, the operator can recognize the dangerous position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an X-ray imaging apparatus for endoscopic diagnosis, and more particularly to a technique for preventing adverse effects of irradiated X-rays or residual X-rays on a human body.

[0002]

2. Description of the Related Art As a conventional X-ray imaging apparatus for endoscopic diagnosis, an endoscope is inserted into a subject, an image observed by the endoscope is picked up by a television camera and displayed on a display, and There is one in which an X-ray fluoroscopic image is taken by an X-ray imaging device and a portion of the specimen into which an endoscope is inserted is displayed on a display.

That is, in the above apparatus, two cameras display images on their respective dedicated displays, and by alternately observing the images, the endoscopic image is diagnosed and the position of the tip of the endoscope by X-ray fluoroscopy is used. Checking. This device could only perform diagnostic actions at some point.

Further, Japanese Patent Laid-Open No. 2-68027 discloses that
An endoscopic image and an X-ray fluoroscopic image are simultaneously displayed or recorded as a main image and a sub-image on one display, and the image to be mainly observed (main image) and the image to be secondary viewed (sub-image) are mutually displayed. A device is disclosed that can be placed in a size and position that is easy to see.

[0005]

By the way, in the X-ray imaging apparatus, when X-ray irradiation is continuously performed to a certain patient, the irradiation dose in the X-ray irradiation chamber or the residual dose increases, and the patient is exposed to radiation. It is feared that the adverse effects on the human body to the patient and the operator due to the

The present invention has been made in view of the above circumstances, and provides an X-ray imaging apparatus for endoscopic diagnosis which can prevent adverse effects on the human body due to X-ray irradiation dose or residual X-ray dose. It is an object.

[0007]

[Means for Solving the Problems] X for endoscopic diagnosis according to the present invention
The line imaging device includes an endoscope image capturing means that is internally provided or connected to an endoscope having an insertion portion that is inserted into a living body, and an insertion portion distal end of the endoscope that is inserted into the living body. An X-ray image pickup means for photographing an X-ray image, a detection means for detecting the dose of X-rays emitted by the X-ray image pickup means, or a residual X-ray dose, and an X-ray dose detected by the detection means are equal to or more than a prescribed amount. In this case, it is equipped with a notification means for notifying the operator of a dangerous state.

[0008]

According to the present invention, when the X-ray dose detected by the detection means is equal to or more than the prescribed amount, the operator can recognize that the operator is in a dangerous state by the notification of the notification means, and the X-ray irradiation dose or the remaining X-ray amount can be recognized.
It is possible to prevent the adverse effect of the dose on the human body.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram for explaining the schematic configuration of an X-ray imaging apparatus for endoscopic diagnosis according to the first embodiment of the present invention.

As shown in FIG. 2, the X-ray imaging apparatus for endoscopic diagnosis 15 is an endoscope television camera 1 in which an endoscope is inserted into a subject 21 and is connected to the endoscope 22. An endoscopic image is picked up and displayed on the display 11. At the same time, the imaging device 15 irradiates the portion of the subject into which the endoscope 22 is inserted with X-rays with the X-ray imaging device 2 to capture an X-ray fluoroscopic image, and displays the image on the same display 11. It is a thing. Further, the display control device 16 provided in the X-ray imaging apparatus synthesizes an endoscopic image, an X-ray fluoroscopic image, and a character, which will be described later, and causes the display 11 to display them.

In FIG. 1, an X-ray imaging apparatus 15 for endoscopic diagnosis includes an endoscopic image imaging means such as an endoscopic television camera 1 built in or connected to the endoscope, and an X as an X-ray imaging means. The line image pickup device 2 and the display control device 16 are provided. The endoscope television camera 1 is for capturing an endoscopic image observed by an endoscope attached to a subject. Further, the X-ray imaging apparatus 2 captures an X-ray fluoroscopic image for confirming the in-vivo position of the distal end portion of the endoscope inserted in the subject. The X-ray imaging apparatus 2 is composed of an X-ray irradiation apparatus 2a that irradiates the subject 21 with X-rays, and an X-ray television camera 2b that captures the X-rays that have passed through the subject 21.

Further, the display control device 16 includes two analog / digital (A / D) converters 3, four frame memories, a multiplexer 6 and a digital / analog (D / A) converter 7. I have it. The A / D converters 3 are for converting analog signals output from the cameras 1 and 2 into digital signals.

The endoscope main image frame memory 4A is for storing the entire field of view of the television image from the endoscope television camera 1 as it is, and the X-ray main image frame memory 4B is for the X-ray television. This is for storing the entire field of view of the TV camera image from the camera 2b as it is.

Further, a frame memory 5A for an endoscope sub-image
Is for storing the entire field of view of the TV image from the endoscope TV camera 1 in a reduced size, and the X-ray sub-image frame memory 5B is used to store the entire field of view of the TV camera image from the X-ray TV camera 2b. It is for reducing and remembering.

The multiplexer 6 includes main image frame memories 4A and 4B and sub-image frame memories 5A and 5A.
It is for selecting from which memory of B the image data is read. The D / A converter 7 converts the digital signal output from the multiplexer 6 into an analog signal.

Further, the display control device 16 comprises a display circuit 8, a character generation circuit 9 and a superimposing circuit 10.

The display circuit 8 simultaneously displays a television image from the endoscope television camera 1 and a television camera image from the X-ray television camera 2b as one display 11.
This is for creating a display image in which the main image and the sub image are combined. Also, the superimposing circuit 1
0 is for superimposing the character generated by the character generation circuit 9 on the image output by the display circuit 8. On the color display 11, the image in which the character is superimposed on the display image is displayed only when the character generation circuit 9 generates the character.

The display control device 16 is the image control device 1.
2 and an input device 13 provided on a console or the like. The image control device 12 including a computer includes an image processing unit and the above-mentioned units 4A, 4B, 5A, 5B, 6, 7,
This is for controlling 8 and 10.

As shown in FIG. 2, the residual X-ray dose detecting means 14 provided on the examination table 17 on which the subject 21 is placed detects the residual dose of the X-rays emitted by the X-ray imaging apparatus 2. It is a thing. The character generation circuit 9 is configured to generate a character that indicates a dangerous state when the residual X-ray dose detection means 14 has a residual dose of a specified value or more.

Next, the operation of the X-ray imaging apparatus 15 for endoscopic diagnosis will be described. In FIG. 1, the video signals picked up by the endoscope television camera 1 and the X-ray imaging device 2 are amplified and converted into digital signals by the A / D converter 3, and then the main image frame memory 4A, 4B and the sub-image frame memories 5A and 5B are stored in real time on a frame-by-frame basis. At this time, the main image frame memory 4
The entire field of view of the television camera image from the endoscope television camera 1 is stored in A as it is, and the entire field of view of the television image from the X-ray imaging apparatus 2 is stored as it is in the main image frame memory 4B. In addition, the sub-image frame memory 5A
Stores the entire field of view of the TV image from the endoscope TV camera 1 in a reduced size, and stores the entire field of view of the TV image from the X-ray TV camera 2b in a reduced size in the sub-image frame memory 5B. To be done.

Each of the frame memories 4A, 4B, 5A,
5B each input / output control, the main image frame memories 4A and 4B to the sub-image frame memories 5A and 5B
The image control device 12 controls the image fitting, the multiplexer 6 switching control, the image reduction processing, and the character taut weight control.

The control for fitting the image in the sub-image frame memory 5B into the image in the main-image frame memory 4A is as follows.
This is performed by designating and reading the respective addresses of the main image frame memory 4A and the sub image frame memory 5B. The control of fitting the image of the sub-image frame memory 5A into the image of the main-image frame memory 4B is performed by the main-image frame memory 4B and the sub-image frame memory 5
This is performed by designating and reading each address of A.

The signals read from the main and sub frame memories are input to the multiplexer 6, the D / A converter 7 and the display circuit 8, and the television from the endoscope television camera 1 is stored on the memory of the display circuit 8. The image and the television image from the X-ray imaging apparatus 2 are simultaneously stored on one display 11 so as to be an image combined as a main image and a sub image.

Here, when the residual dose detected by the residual X-ray dose detecting means 14 is equal to or larger than the specified value, the character generating circuit 9 outputs a character indicating a dangerous state to the superimposing circuit 10. The superimposing circuit 10 superimposes a character on the image output from the main / sub frame memory. Then, the superimposing circuit 10 outputs the signal of the superimposed image to the display 11. Display 11 at this time
An example of the display screen above is shown in FIG.

As shown in FIG. 3, on the display 11, an endoscopic image (color display) A is displayed in the main image display area M, and an X-ray fluoroscopic image B is displayed in the sub image display area S by being fitted therein. "DENGE", which means a dangerous state
R ”is displayed.

Further, by the control signal from the image control device 12 shown in FIG. 1, the main and sub images on the display 11 can be exchanged through the display circuit 8. Also at this time, if the remaining X-ray dose is equal to or larger than the specified value, "DENGER" which means a dangerous state is similarly displayed.

When the residual X-ray dose is less than the specified value, "DENGER" is not displayed on the display 11.

When the X-ray imaging apparatus 15 of the present embodiment is used, the residual X-ray dose in the X-ray room can be detected, and the operator can be notified if it is dangerous, and the adverse effects of X-rays on the human body can be expected. Can be prevented.

FIG. 4 is a schematic block diagram of an X-ray imaging apparatus for endoscopic diagnosis showing a first modification of the first embodiment. The imaging device 15A according to the present modification shown in FIG. 4 notifies the dangerous state by an alarm sound, whereas the device 15 according to the first embodiment notifies the dangerous state on the display. Imaging device 1
5A includes a speaker 18 connected to the remaining X-ray dose detection means 14. Other configurations and operations similar to those of the first embodiment are designated by the same reference numerals and description thereof will be omitted. In this modification, when the residual X-ray dose is equal to or less than the specified value, a warning sound is emitted, and the operator can recognize that it is in a dangerous state.

It should be noted that a combination of the configurations of this modification and the first embodiment, that is, a configuration in which both the alarm sound from the speaker and the "DENGER" display on the display are possible.

FIG. 5 is an explanatory diagram of display contents showing a second modification of the first embodiment. The second modification has the same configuration as the device 15 of the first embodiment, but the generation content of the character is different. Other than that, the configuration, operation, and effect are similar to those of the first embodiment, and only different points will be described with reference to FIG.

FIG. 5A shows an example of the display screen of the display 11 in the dangerous state. The contents of the character shown in FIG. 5B are the same as the "DEN" of the first embodiment.
It replaces the "GER" display, and the specified value of the residual X-ray dose is 4
The display contents (characters) E are changed to "A", "B", "C", and "D" from the lower order to the higher order. Therefore, in the second modified example, the operator can finely know the contents of the dangerous state such as "no problem", "no problem", "a little dangerous", and "danger" based on the value of the residual X-ray dose. The display content may be recognized in different colors. Further, the message such as “danger” may be displayed as it is.

6 to 7 relate to the second embodiment of the present invention. FIG. 6 is a block diagram of an X-ray imaging apparatus for endoscopic diagnosis according to the second embodiment, and FIG. 7 shows the entire apparatus. Schematic configuration diagram, FIG.
Is an explanatory view showing a display image in which a character is folded, FIG. 9 is an explanatory view showing an X-ray image in which a character is folded, and FIGS. It is an explanatory view shown.

In the second embodiment, instead of the residual X-ray dose detecting means 14 of the first embodiment, there is provided an X-ray irradiation amount detecting means 26 for detecting the irradiation dose irradiated by the X-ray irradiating device 2a. (See FIGS. 6 and 7). Other configurations and operations similar to those of the first embodiment are designated by the same reference numerals and description thereof will be omitted.

With the above construction, when the X-ray irradiation dose is equal to or greater than the specified value, the X-ray is displayed on the display 11 at a position that does not interfere with the observation of the endoscopic image and the X-ray fluoroscopic image as in the first embodiment.
The X-ray irradiation amount n detected by the X-ray irradiation amount detecting means 26 is superimposed and displayed (see FIG. 8).

The X-ray imaging apparatus 25 for endoscopic diagnosis of this embodiment
When using, the amount of X-ray irradiation in the X-ray room is detected, and it can be displayed as a numerical value (irradiation amount) to indicate to the operator that it is in a dangerous state, and the adverse effects of X-rays on the human body can be detected. It can be prevented. It should be noted that the numerical value of the X-ray irradiation dose may be displayed at all times, and if it is less than the specified value, it may be displayed in blue, for example, while the numerical value of the X-ray irradiation dose may be displayed in red, for example, in a dangerous state. good.

As a modification of the character display, as shown in FIG. 9, the X-ray irradiation dose may be displayed only during the X-ray fluoroscopic image display.

Alternatively, as a second modified example, when the X-ray irradiation dose is equal to or more than a specified value, the display 11 indicates "DANGE" which means a dangerous state, as shown in FIG.
“R” is displayed. Alternatively, a sound may be notified as in the modification of the first embodiment.

Further, as a third modification, the X-ray irradiation dose is divided into, for example, three stages, and as shown in FIG.
The colors "low", "high", and "danger" may be classified. The display position and shape may be displayed as indicated by the symbol m in FIG. 11A, for example, and may be blinked.

The endoscope image pickup means in each of the above embodiments may be an electronic endoscope having a CCD at the tip of the insertion portion.

The X-ray imaging apparatus 3 for endoscopic diagnosis shown in FIG.
1 is configured to stop the X-ray irradiation of the X-ray irradiator 2a by means for detecting abnormality of the endoscope and a detection signal of the means for detecting. This device will be described below. In addition, other configurations and operations similar to those of the first embodiment are designated by the same reference numerals, and description thereof will be omitted.

The endoscope 22 is connected by a cable 32 to a light source device 33 which supplies illumination light emitted from the tip of the endoscope. The cable 32 is connected from the light source device 33 to
Further, it is connected to the video processor 34. The video processor 34 processes the electric signal output from the endoscope television camera 1 and outputs a video signal to the color display 11 for displaying an endoscopic image.

On the other hand, X for controlling the X-ray irradiator 2a
The line operation device 35 processes the signal from the X-ray television camera 2b and outputs a processed signal to the display 36 for displaying an X-ray fluoroscopic image.

The video processor 34 is provided therein with a detection means 37 for detecting an abnormality of the endoscope 22. This detecting means 37 bends the bending portion, for example, an abnormality of the bending drive motor, an abnormality such as an electric signal not being output from the camera 1, a situation where illumination light is not supplied, for example, a light source device 32 not shown. It detects the breakdown of the light lamp and other factors. For example, the output of the light amount detection means for automatic light control can be used to detect the situation where the illumination light is not supplied.

In the X-ray imaging apparatus for endoscopic diagnosis, the position of the tip of the endoscope is confirmed by X-ray fluoroscopy when performing endoscopic diagnosis. However, X-ray irradiation requires a long time for the patient. It is not preferable to extend. If an abnormality occurs in the endoscope during observation, X-ray irradiation becomes unnecessary, and it is desirable to immediately stop X-ray irradiation from the viewpoint of patient protection. However, the operator operating the endoscope cannot stop the X-ray irradiator while leaving the endoscope inserted in the patient as it is. Further, when the X-ray operating device 35 is far from the operator who operates the endoscope, there are cases where the operator of the X-ray irradiating device (X-ray technician) cannot be contacted immediately even if the operator is contacted.

As a countermeasure against this, in the present apparatus 31, when the detecting means 37 detects an abnormality, the irradiation of the X-ray irradiator 2a is automatically stopped to minimize the exposure of the operator and the patient. It can be done and safety can be improved.

FIG. 13 to FIG. 16 show a configuration in which the X-ray imaging apparatus for endoscopic diagnosis notifies the X-ray irradiation time or irradiation amount (X-ray intensity × time), or their cumulative value. There is.

The device shown in FIG. 13A is a display control for displaying an endoscopic image on a display (not shown) after inputting and processing an electric signal output from the CCD in the television camera for an endoscope 1. Device 41 and the X-ray irradiation device 2
a and an X-ray operating device 42 for setting an irradiation instruction and an irradiation amount for the X-ray irradiation device 2a and transmitting the instruction and the setting amount to the display control device 41.
Further, FIG. 13B shows an example of a display image on the display.

The X-ray operating device 42 is the X-ray operating device 4
A keyboard 43 for setting the irradiation amount of 2, a switch 44 for giving an instruction to start and stop irradiation of the X-ray operating device 42,
According to the instruction of the switch 44 and the setting of the keyboard 43, a CPU 45 that controls the X-ray operating device 2a, and a communication interface (hereinafter referred to as communication I) that transmits the instruction and the setting to the display control device 41 via the CPU 45.
/ F).

The display control device 41, for example, a process circuit 47 for performing various processes on a signal output by the CCD of the endoscope television camera 1, an endoscopic image (signal) output by the process circuit 47, and a later-described process. Synthesis circuit (hereinafter abbreviated as MIX) 4 for synthesizing a character image (X-ray irradiation amount)
8 and VRAM (Video that can read and write character data
A Random Access Memory) 49 and a CPU 50 that controls the entire device such as the VRAM 49 and the process circuit 47.

Further, the display control device 41 is based on the communication I / F 51 for receiving the instruction and setting from the communication I / F 46 of the X-ray operating device 42 and the instruction received by the communication I / F 51. The measuring means 52 for measuring the irradiation time of the X-ray irradiation device 2a is provided. The communication standard of the communication I / F 46 and the communication I / F 51 is RS232C, for example.

The CPU 50 outputs the irradiation time measured by the measuring means 52 to the MIX 48 as a character image via the VRAM 19. At this time, the video signal output by the MIX 48 is the endoscopic image and the irradiation time (exposure time).
Etc. are combined, and the combined image is displayed on the display.

Instead of the irradiation time, the set value of the irradiation intensity and the irradiation time may be integrated to display the irradiation line (exposure) amount.

This apparatus can inform the operator of the exposure time and exposure amount, and is effective in radiation safety management.

The apparatus shown in FIG. 14 stores the amount of exposure for each patient and displays the cumulative value. For this reason, this device uses the keyboard 53 for inputting patient data such as patient name and sex to the CPU 50 of the display control device 41.
2, a storage means 54 for storing the exposure time and the cumulative value of the exposure dose for each patient is provided in the device 41. On the display, instead of the time display of FIG. 13B, the cumulative value of the exposure time or the cumulative value of the exposure amount is displayed together with the endoscopic image. Other configurations and effects
The content is the same as that of the device shown in FIG. 13, and a part and the description of the same content are omitted. The keyboard 53 can also be used as the keyboard 43 shown in FIG.

The apparatus shown in FIG. 15 is different from the apparatus shown in FIG. 13 in that the VRAM 49 is excluded, and the apparatus shown in FIG. 15 has a light emitting diode (LED) 55 which is connected to the CPU 50 and displays the time, the exposure dose, and the accumulated value. There is. The light emitting diode 55 is provided on the front panel of the display control device 41, for example, so that the operator can easily see it.
Other configurations and operational effects are similar to those of the device shown in FIG. 13, and as for the same contents, part of the diagram and description thereof are omitted.

The apparatus shown in FIG. 16 has the same structure as that of the apparatus shown in FIG.
Reference numeral 4 stores the prescribed value of the exposure dose or the prescribed time of exposure as data, and the CPU 50 gives an instruction to the VRAM 49 so that the display gives a warning when the prescribed value is exceeded. ing. still,
From the keyboard 53, set the specified value and specified time
It is supposed to be entered. Other configurations and operational effects are similar to those of the device shown in FIG. 13, and as for the same contents, part of the diagram and description thereof are omitted.

[0058]

As described above, according to the present invention, the irradiation X-ray dose or the remaining X-ray dose in the X-ray room can be detected, and the operator can be notified if it is dangerous. The effect is that it can be prevented.

[Brief description of drawings]

FIG. 1 is a block diagram for explaining a schematic configuration of an X-ray imaging apparatus for endoscopic diagnosis according to a first embodiment.

FIG. 2 is an overall schematic configuration diagram of an X-ray imaging apparatus for endoscopic diagnosis.

FIG. 3 is a diagram showing an example of a display image displayed by the apparatus shown in FIG.

FIG. 4 is a schematic configuration diagram of an X-ray imaging apparatus for endoscopic diagnosis showing a first modification.

FIG. 5 is an explanatory diagram of display contents showing a second modification of the first embodiment.

FIG. 6 is a block diagram of an X-ray imaging apparatus for endoscopic diagnosis according to a second embodiment.

FIG. 7 is an overall schematic configuration diagram of an apparatus according to a second embodiment.

FIG. 8 is an explanatory diagram showing a display image in which characters are overlapped.

FIG. 9 is an explanatory diagram showing an X-ray image in which characters are superposed.

FIG. 10 is an explanatory diagram showing a display screen in which a character in a dangerous state is superposed.

FIG. 11 is an explanatory diagram showing a display screen in which a character in a dangerous state is superposed.

FIG. 12 is an overall schematic configuration diagram of an X-ray imaging apparatus for endoscopic diagnosis.

FIG. 13 is a schematic block diagram of an X-ray imaging apparatus for endoscopic diagnosis.

FIG. 14 is a schematic block diagram of an X-ray imaging apparatus for endoscopic diagnosis.

FIG. 15 is a schematic block diagram of an X-ray imaging apparatus for endoscopic diagnosis.

FIG. 16 is a schematic block diagram of an X-ray imaging apparatus for endoscopic diagnosis.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Endoscopic TV camera 2 ... X-ray TV camera 8 ... Display circuit 9 ... Character generation circuit 10 ... Superimpose circuit 11 ... Color display 12 ... Image control device 14 ... Remaining X-ray dose detection means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yudai Nakagawa 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (72) Inventor Katsuyuki Saito 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (72) Inventor Akihiro Miyashita 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (72) Inventor Shinji Yamashita 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (72) Inventor Akira Murata 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (72) Inventor Akifumi Ishikawa 2-43 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd.

Claims (1)

[Claims] 1. An endoscopic image capturing means provided inside or connected to an endoscope having an insertion portion to be inserted into a living body, and a tip of the insertion portion of the endoscope inserted into the living body, and An X-ray imaging unit for capturing an X-ray image, a detection unit for detecting the dose of X-rays emitted by the X-ray imaging unit, or a residual X-ray amount thereof, and an X-ray dose detected by the detection unit having a prescribed amount or more. In this case, an X-ray imaging apparatus for endoscopic diagnosis, comprising: a notification means for notifying an operator of a dangerous state.