JPH0531102A - Roentgenograph system - Google Patents

Abstract

PURPOSE:To eliminate the need for separate arrangement of an X-ray shielding reference value setting means and an X-ray shielding reference value display means. both of which are not used frequently once after set, yet functions of the means are retained as well. CONSTITUTION:A switching means 20 is provided to perform a switching between the position of setting an X-ray shielding reference value and the position of setting fluoroscopic conditions, and a means to allow the impurity of a set value of the X-ray shielding reference value by a fluoroscopic conditions setting means in a switching over to the position of setting the X-ray shielding reference value by the switching means 2 is provided while the set value of the X-ray shielding reference value is displayed by a fluoroscopic conditions display means 23.

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,
In particular, the present invention relates to an X-ray imaging apparatus including a fluoroscopic condition setting means and a fluoroscopic condition display means for displaying the fluoroscopic condition set by the fluoroscopic condition setting means.

[0002]

2. Description of the Related Art In general, an X-ray imaging apparatus performs fluoroscopy prior to its imaging, and the fluoroscopic conditions can be set by a fluoroscopic condition setting means provided in a control console.

The control console near the fluoroscopic condition setting means is also provided with a fluoroscopic condition display means capable of digital display.

The reason for providing such fluoroscopic condition display means is to operate the fluoroscopic condition setting means so as to display the setting information value while observing (comparing with) the information value currently displayed. This is because

On the other hand, in the X-ray photographing apparatus, an X-ray cutoff reference value setting means for setting an X-ray cutoff reference value is set at a place different from the console, and the X-ray cutoff reference value setting means sets the X-ray cutoff reference value. X-ray cutoff reference value display means for displaying the X-ray cutoff reference value is provided.

When the X-ray cutoff reference value setting means sets the X-ray cutoff reference value, the light intensity signals are sequentially integrated from the output optical image from the image intensifier at the time of photographing, and the integrated value is the X-ray cutoff value. The X-ray irradiation from the X-ray tube is automatically cut off when the X-ray cutoff reference value is reached.

[0007]

However, in the X-ray imaging apparatus having such a configuration, the X-ray blocking reference value setting means and the X-ray blocking reference value display means are in the above-mentioned stages of use of the X-ray imaging apparatus. In, once the X-ray reference value is set, it is hardly reset after that.
It is not used very often.

Therefore, the provision of the X-ray cut-off reference value setting means and the X-ray cut-off reference value display means which are not particularly frequently used as described above is a problem due to the space in which they are installed, or There was a problem with the complicated structure.

Therefore, the present invention has been made under such circumstances, and the purpose thereof is to set an X-ray cutoff reference value setting means which is not used frequently after being set once. , And an X-ray cutoff reference value display means are not separately provided, and an X-ray imaging apparatus is provided which still has those functions.

[0010]

In order to achieve such an object, the present invention basically provides an X-ray that has passed through an object.
An image intensifier that converts lines into an optical image,
The light intensity signals in the optical image converted by the image intensifier are integrated, and X-ray blocking is performed when the integrated value reaches a preset X-ray blocking reference value.
An X-ray imaging apparatus comprising: a line blocking control means; a fluoroscopic condition setting means for setting a fluoroscopic condition during fluoroscopy; and a fluoroscopic condition display means for displaying the fluoroscopic condition set by the fluoroscopic condition setting means. Switching means for switching between the X-ray cutoff reference value setting side and the fluoroscopic condition setting side, and when the X-ray cutoff reference value setting side is switched by this switching means, the X-ray cutoff reference value set value is set by the fluoroscopic condition setting means. A means for inputting and displaying the X-ray blocking reference value set value on the fluoroscopic condition display means is provided.

[0011]

The X-ray radiographing apparatus thus constructed is
Switching means for switching between the X-ray cutoff reference value setting side and the fluoroscopic condition setting side, and when the X-ray cutoff reference value setting side is switched by this switching means, the X-ray cutoff reference value set value is set by the fluoroscopic condition setting means. Means for inputting and displaying the X-ray blocking reference value set value on the fluoroscopic condition display means are provided.

If the switching means is switched to the fluoroscopic condition setting side, the fluoroscopic condition setting means can set the fluoroscopic condition as in the conventional case. At this time, since the fluoroscopic condition to be sequentially set is displayed on the fluoroscopic condition display means, the fluoroscopic condition can be set without error while watching the fluoroscopic condition display means.

When the X-ray cutoff reference value is set separately from the fluoroscopic condition setting, the X-ray cutoff reference value is set by the fluoroscopic condition setting means by switching the switching means to the X-ray cutoff reference value setting side. The X-ray blocking reference value display at that time is performed by the fluoroscopic condition display means.

For this reason, the X-ray cutoff reference value setting means and the X-ray cutoff reference value display means, which are set once and are not frequently used later, are not separately provided and still have their functions. Will be able to do so.

[0015]

1 is a schematic block diagram showing an embodiment of an X-ray imaging apparatus according to the present invention.

In FIG. 1, a subject 2 is placed on a table 1. An X-ray tube device 3 is arranged above the subject 2, and the subject 2 is irradiated with X-rays from the X-ray tube device 3.

The X-rays transmitted through the subject 2 are made incident on the image intensifier 4 arranged under the table 1.

The image intensifier 4 converts X-rays that have been transmitted through the subject 2 and are incident thereon into an optical image, and the optical image is the image intensifier 4.
Is formed on the surface side facing the surface on the table 1 side.

Then, this optical image is made incident on a light distributor 6 provided below the image intensifier 4.

As shown in FIG. 2, the light distributor 6 is configured so that the optical image 7 of the image intensifier 4 is incident on the spot camera 6 via the lens 8 and the reflecting mirror 5. At the same time, a part of the optical image 7 is transmitted through the lens 8 and the reflecting mirror 5, reflected by the reflecting mirror 10 and the reflecting mirror 5, and is incident on the TV camera 11. The TV camera 11 serves as a monitor when shooting with the spot camera 9.

Further, as shown in FIG. 1, the output from the TV camera 11 is input to the image processing device 12, where image processing such as freeze is performed, and the CRT 1
3 is input.

Further, as shown in FIG. 2, in the light distributor 6, a part of the optical image transmitted through the lens 8 is part of the prism 14.
The signal is input to the light receiving element 15 via, and a signal corresponding to the light intensity is output from the light receiving element 15.

As shown in FIG. 1, the signal from the light receiving element 15 is input to the integrator 17 after passing through the amplifier 16,
The integrator 17 is adapted to integrate the signals.

The signal thus integrated is used as a comparator 18
Is inputted to one of the input terminals, and at the same time, is compared with a signal corresponding to the X-ray cutoff reference value inputted to the other input terminal, and the integrated value of the integrated signals becomes the X-ray cutoff reference value. When it reaches, the output is sent.

This output serves as an X-ray cutoff signal, and this X-ray cutoff signal is input to the X-ray tube device 3 to automatically cut off the X-rays.

Now, the configuration for setting the X-ray cutoff reference value of the signal input to the comparator 18 will be described.

There is a control console 19, and this control console 1
The switching means 20 is provided at 9. In the case of the present embodiment, the switching means 20 is switched between the X-ray cutoff reference value setting side and the fluoroscopic time setting side in two steps.
Here, it is assumed that the X-ray blocking reference value setting side has been switched to.

Then, from the switching means 20, a signal indicating that the X-ray cutoff reference value is set is input to the control device 21.

In this state, when the X-ray reference value is set by the ten key 22 on the control console 19, a numerical value corresponding to the reference value is displayed on the digital display 23 arranged near the ten key 22. As a result, a signal corresponding to the X-ray reference value is transmitted to the control device 21.
It is supposed to be input to.

Upon receipt of this input, the control device 21 determines from the signal from the switching means 20 that the signal corresponds to the X-ray reference value, and stores the X-ray reference value based on this signal in the storage device 24. ing.

Next, a structure capable of setting the fluoroscopic time during fluoroscopy will be described.

At this time, the switching means 20 on the control console 19 is switched to the fluoroscopic time setting side. Then, a signal to that effect is output to the control device 21.

In this state, by setting the fluoroscopic time with the ten-key pad 22, a signal corresponding to the fluoroscopic time is output to the control device 21.

In the control device 21, the numeric keypad 2 indicates that the output from the numeric keypad 22 is a signal corresponding to the fluoroscopic time.
It judges based on the signal from 2. Then, from the signal corresponding to the fluoroscopic time, information corresponding to the fluoroscopic time is stored in the storage device 25.

From the storage device 25, an output corresponding to the fluoroscopic time is input to one input terminal of the comparator 26.

On the other hand, the control console 19 has a see-through start key 28. By operating the see-through start key 28,
A signal to that effect is input to the control device 21, is made transparent by a circuit (not shown), and a signal for time measurement is input to the timer 29.

The count value corresponding to the time measurement by the timer 29 is input to the other input terminal of the comparator 26, and the count value is converted into a signal value corresponding to the fluoroscopic time input to the one input terminal. It outputs the output when they match.

This output is X-rayed by the X-ray tube device 3.
This is a signal for line breakage, which is used to terminate fluoroscopy.

As is apparent from the above description, according to the present embodiment, particularly, the switching means 20 for switching to the X-ray cutoff reference setting side and the fluoroscopic condition setting side, respectively, and the X-ray by the switching means 20. When switched to the cutoff reference value setting side, the X-ray cutoff reference value set value can be input by the setting switch 22 which is the fluoroscopic time setting means, and the Xray cutoff reference value set value is used as the fluoroscopic time display means. And means for displaying on the digital display 23.

If the switching means 20 is switched to the fluoroscopic time setting side, the fluoroscopic time can be set by the setting switch 22 which is the fluoroscopic time setting means as in the conventional case. At this time, the fluoroscopic time can be set without error while watching the digital display 23.

When the X-ray cutoff reference value is set separately from the fluoroscopic time setting, if the switching means 20 is switched to the X-ray cutoff reference value setting side, the X-ray cutoff reference value setting is performed by the fluoroscopic condition setting means. The setting switch 22 is used, and the X-ray cutoff reference value is displayed on the digital display 23.

For this reason, the X-ray cutoff reference value setting means and the X-ray cutoff reference value display means, which are not used frequently after being set once, are not separately provided, and still have those functions. Will be able to do so.

Therefore, it is possible to solve the problem of space and the problem of complication of the configuration, which have been conventionally provided with the X-ray cutoff reference value setting means and the X-ray cutoff reference value display means separately. become.

In the above embodiment, the X-ray blocking reference value is set and the set value is displayed by the fluoroscopic time setting means and the fluoroscopic time display means. However, it is not necessarily limited to this. X
It is needless to say that the fluoroscopic condition setting means and the fluoroscopic condition display means may be used in view of the fact that the fluoroscopic observation is not performed when setting the line blocking reference value.

Further, in the above-mentioned embodiment, the block diagram is shown for easy understanding of the present invention.
It goes without saying that the control may be performed using a microcomputer.

[0046]

As is clear from the above description,
According to the X-ray imaging apparatus of the present invention, it is not necessary to separately provide the X-ray cutoff reference value setting means and the X-ray cutoff reference value display means which are not used frequently after being set once, It can still be functional.

[Brief description of drawings]

FIG. 1 is a schematic block diagram showing an embodiment of an X-ray X-ray imaging apparatus according to the present invention.

FIG. 2 is a configuration diagram showing an embodiment of a light distributor of the X-ray imaging apparatus according to the present invention.

FIG. 3 is a plan configuration diagram showing an embodiment of a control console of the X-ray imaging apparatus according to the present invention.

[Explanation of symbols]

 4 Image intensifier 19 Control console 20 Changeover switch 22 Setting switch 23 Digital display

Claims (1)

Claim: What is claimed is: 1. An image intensifier for converting an X-ray transmitted through an object into an optical image, and a light intensity signal in the optical image converted by the image intensifier, X-ray cutoff control means for performing X-ray cutoff when the integrated value reaches a preset X-ray cutoff reference value,
In an X-ray imaging apparatus including a fluoroscopic condition setting means for setting a fluoroscopic condition during fluoroscopy and a fluoroscopic condition display means for displaying the fluoroscopic condition set by the fluoroscopic condition setting means, an X-ray blocking reference value setting side And a switching condition for switching to the fluoroscopic condition setting side, and when the switching device switches to the X-ray blocking reference value setting side, the X-ray blocking reference value setting value can be input by the fluoroscopic condition setting device and the X-ray is set. An X-ray imaging apparatus comprising: means for displaying the cut-off reference value set value on the fluoroscopic condition display means.