JPH0632320B2 - X-ray fluoroscope - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Use of the Invention] X-ray condition manual / automatic adjustment selection means capable of adjusting X-ray conditions during fluoroscopy by selecting either manual or automatic adjustment means, and a fluoroscopic image The present invention relates to an X-ray fluoroscopic imaging apparatus including a video memory device for recording and reproducing.

[Background of the Invention]

FIG. 4 shows an operation panel of a conventional X-ray fluoroscopic imaging apparatus of this type. In FIG. 4, reference numeral 1 is an operation panel, and 2 is a group of selection switches for operation type of the apparatus. Selection switch group 2
Is a four-cut size shooting selection switch 3, a six-cut size shooting selection switch 4, an automatic adjustment perspective selection switch 5,
A manual adjustment perspective selection switch 6 and a perspective selection switch 7 for selecting the use of a video memory device described later (meaning that a perspective image can be recorded in the video memory device; the same applies hereinafter) are provided. Here, the selection switches 3 and 4 are switches for selecting the size of a photograph obtained after photographing, and the selection switch 5 automatically adjusts the X-ray condition at the time of see-through (the X-ray condition is adjusted by an X-ray condition automatic adjustment means not shown). A switch serving as an X-ray condition automatic adjustment selecting unit, which is selectively operated when performing the selection), and a selection switch 6 manually adjust the X-ray condition during fluoroscopy (the X-ray condition is adjusted by an X-ray condition manual adjusting unit (not shown)). It is a switch as an X-ray condition manual adjustment selection means that is sometimes selected and operated. The selection switch 7 is a switch for selecting the use of the video memory device as described above. However, when the selection switch 7 is selectively operated (a fluoroscopic image can be recorded in the video memory device), The X-ray condition is always adjusted manually.

5 to 7 are block diagrams of such a conventional device.
The selection switch 6 is shown in FIG. 5, and the selection switch 5 is shown in FIG.
However, FIG. 7 is a block diagram when the selection switches 7 are selected and operated. In these FIGS. 5 to 7, 1 is the operation panel, 8 is the operation panel 1, and a manual condition setting circuit (X-X) for outputting an X-ray condition signal _S1 according to the conditions displayed on the panel 1 (X X-ray condition manual adjustment means), 17 is an X-ray interlocking with a transparent X-ray switch (not shown).
This is a perspective switch circuit that generates a line on / off signal _S0 . Here, the fluoroscopic X-ray switch is a switch for performing fluoroscopic operation while being pressed, and is an X-ray on / off signal _S0.
Turns on while the transparent X-ray switch is pressed and turns off when the transparent X-ray switch is not pressed. _Reference numeral 9 is an X-ray control circuit for controlling the input voltage of a high voltage transformer or an X-ray tube filament transformer (not shown) according to the X-ray condition signal _S1 and the X-ray ON / OFF signal _S0 , and 10 is both the transformer and the X-ray tube (Fig. It is a high voltage generator composed of (not shown). 11 is X
A television monitor that displays a fluoroscopic image and outputs a luminance signal (this is called a detected luminance signal) _S2 corresponding to the luminance, 12 is a detected luminance signal _S2 and a previously designated luminance signal (this is called a designated luminance signal) compares the _S3, an automatic condition setting circuit for outputting an X-ray condition signal _S1 such as the detection luminance signal _S2 becomes equal to the specified luminance signal _S3 (X-ray condition automatic adjusting means). Reference numeral 13 denotes a video memory device that is combined with the X-ray fluoroscopic imaging apparatus main body to record the fluoroscopic image in an IC memory or the like during fluoroscopy and then reproduce the recorded fluoroscopic image. Here, the video memory device 13 gives an X-ray ON / OFF signal _S4 corresponding to various selections there to the X-ray control circuit 9 to control the generation of X-rays.

FIG. 8 shows an example of the internal structure of the video memory device 13. 8th
In the figure, 81 is a pulse generator, which has a cycle selected by a radiation interval selection switch for selecting the X-ray radiation interval when the X-ray intermittent radiation selection switch on the video memory device operation panel (not shown) is operated. Generate a pulse. 82
Is a gate circuit that takes an AND logic between the output pulse of the pulse generator 81 and the X-ray on / off signal _S0 from the perspective switch circuit 17. Reference numeral 83 denotes an image storage processing circuit, which inputs a video signal (perspective image signal) from a television camera (not shown) of the X-ray fluoroscopic imaging apparatus main body, performs image processing such as averaging processing and image storage, and thereafter. Then, a video signal as a processed image (stored image) is output to a television monitor (not shown) of the X-ray fluoroscopic imaging apparatus main body.

In such a video memory device 13, when the X-ray intermittent radiation selection switch is not operated (when the mode for continuously radiating X-rays is selected), X is output.
The line on / off signal _S4 is synchronized with the X-ray on / off signal _S0 from the fluoroscopic switch circuit 17, for example, when a real-time fluoroscopic image of the television monitor is displayed and the pressing of the fluoroscopic X-ray switch is released ( A fluoroscopic image (final fluoroscopic image) of the fluoroscopic X-ray switch which was turned on is turned off is recorded.

When the X-ray intermittent radiation selection switch is operated (when the mode for intermittently radiating X-rays is selected)
Is an X-ray on / off signal _S4 output by a pulse generator 81
Of the real-time fluoroscopic image is displayed on the television monitor in frame-down mode, and the pressing of the fluoroscopic X-ray switch is released (when the fluoroscopic X-ray switch that has been turned on is turned off). Perspective image (final perspective image)
To record. The frame drop interval corresponds to the pulse cycle selected by the radiation interval selection switch.

As described above, when the video memory device 13 is used, the X-ray on / off from the video memory device 13 to the X-ray control circuit 9 is more than the X-ray on / off signal _S0 from the perspective switch circuit 17 to the X-ray control circuit 9. The signal _S4 has priority and is input.

When the video memory device 13 is not used, the video memory device
X-ray ON from 13 to X-ray control circuit 9, X-ray ON from X-ray switch circuit 17 to X-ray control circuit 9 from OFF signal _S4 ,
The off signal _S0 is input with priority. That is, when the video memory device 13 is not used, the X-ray on / off signal _S0 from the fluoroscopic switch circuit 17 is the X-ray control circuit, as in a general X-ray fluoroscopic imaging device not equipped with the video memory device 13. 9
To control the generation of X-rays.

In such a conventional apparatus, when the manual adjustment fluoroscopic selection switch 6 is operated, the automatic adjustment fluoroscopic selection switch 5 is operated by the X-ray condition signal _S1 from the manual condition setting circuit (see FIG. 5).
When is operated, the X-ray control signal 9 is activated by the X-ray condition signal _S1 from the automatic condition setting circuit 12 (see FIG. 6). When the perspective selection switch 7 for using the video memory device 13 is operated, the X-ray control circuit is operated by the X-ray condition signal _S1 from the manual condition setting circuit 8 in the same manner as when the manual adjustment perspective selection switch 6 is operated. 9 operates (see FIG. 7).

As described above, in the conventional apparatus, when the video memory device 13 is used (when the fluoroscopic image is recorded in the video memory device 13), the X-ray condition during fluoroscopy is manually adjusted. It was necessary to reset the X-ray condition for each subject.

[Object of the Invention]

The present invention has been made in view of the above-mentioned circumstances,
To provide an X-ray fluoroscopic imaging apparatus capable of performing fluoroscopic and fluoroscopic image recording without resetting the X-ray condition depending on a subject when the video memory device is used and manually adjusting the X-ray condition similarly to the conventional device. With the goal.

[Outline of Invention]

The apparatus of the present invention is an X-use type video memory device capable of adjusting the X-ray condition at the time of fluoroscopy by selecting either manual or automatic adjusting means even when the fluoroscopic image can be recorded by the video memory device. Line condition manual / automatic adjustment selection means is provided,
The above-mentioned object is achieved.

Example of Invention

Embodiments of the present invention will be described below with reference to the drawings. First
The figure shows the essential parts of an embodiment of the X-ray fluoroscopic imaging apparatus according to the present invention. In the figure, 1, 3 to 6 are the same as in FIG.
Similarly to FIG. 4, 2 also shows a selection switch group of the device operation type, but here there is not the perspective selection switch 7 for selecting the use of the video memory device but the selection switches 14 and 15. These selection switches 14 and 15 are provided as means for manually and automatically adjusting the X-ray condition when the video memory device is used. The selection switch 14 selects the use of the video memory device, and at that time, the X-ray condition A switch for selecting automatic adjustment (this is referred to as an automatic adjustment perspective selection switch when using a video memory device). Also, select switch 15
Is a switch for selecting the use of the video memory device and, at that time, selecting the manual adjustment of the X-ray condition (this is referred to as a manual adjustment perspective selection switch when using the video memory device).

FIG. 2 is a block diagram when the automatic adjustment perspective selection switch 14 for using the video memory device is selected and operated in the above-described device of the present invention. In FIG. 2, 9 to 12 and 17 are shown in FIG. 6 and 13 is shown. Each is similar to FIG. 7. As described above, when the selection switch 14 is operated (the fluoroscopic image is made recordable in the video memory device 13) to generate X-rays and fluoroscopy is started, the automatic condition setting circuit 12 causes the television monitor 11 Detection brightness signal _S2 and specified brightness signal specified in advance
_S3 is compared and the X-ray condition signal _S1 that makes the former equal to the latter is output to the X-ray control circuit 9. On the other hand, in the X-ray control circuit 9, the X-ray condition signal _S1 and the X-ray ON / OFF signal _{S4 from the} video memory device 13 (the signal _S4 has priority over the signal _S0 when the video memory device 13 is used). Control the high voltage generator 10. This allows the video memory device
A state in which a perspective image can be recorded by using the 13, ie, the video memory device 13 (in some cases, during recording of the perspective image)
At that time, the X-ray condition at that time (under fluoroscopy) is automatically adjusted.

Note that the block diagram when the manual adjustment perspective selection switch 15 for use with the video memory device is selected is similar to that in FIG. 7, and therefore its explanation is omitted.

FIG. 3 is a plan view showing the main part of another embodiment of the device of the present invention, in which 1 to 6 are the same as in FIG. Similarly to FIG. 4, 7 is a perspective selection switch for selecting the use of the video memory device, but here, it is only a switch for selecting the use of the video memory device 13 when the selection operation is performed. 16 is a video memory device by the selection switch 7
When the use of is selected, a manual / automatic adjustment changeover switch is used to select whether the X-ray condition is to be manually adjusted or automatically adjusted by the switching operation to the side a or the side b. X-ray condition manual / automatic adjustment selection means for using the memory device is configured. In FIG. 3, when the video memory device is used (when the fluoroscopic image can be recorded in the video memory device), first the selection switch 7 is operated, and then the changeover switch 16 is set to the a side or the b side. Operation to select either manual adjustment or automatic adjustment of X-ray conditions.

The changeover switch 16 does not necessarily have to be provided on the operation panel 1 and may be a remote control switch. According to this, the operation panel 1 does not need to be changed as in the case of the conventional apparatus (FIG. 4), and the remote switching operation of the manual / automatic adjustment of the X-ray condition when the video memory device is used becomes possible. .

Further, in the case of the X-ray fluoroscopic imaging apparatus having a CPU, the selection of the manual adjustment or the automatic adjustment of the X-ray condition when the video memory device is used is replaced with the changeover switch 16 and a ROM capable of rewriting data, for example, an electric Data rewritable EEPRO
You may make it perform using M. That is, the types of selections and settings made from the operation panel 1 and the like, various designated values or the order of those selections and settings (hereinafter collectively referred to as selection conditions), and manual adjustment or automatic adjustment of X-ray conditions. Others are associated with each other in advance and written in the EEPROM. During fluoroscopy and fluoroscopic image recording, the given selection condition is judged by the CPU, and the selection result of manual adjustment or automatic adjustment is read out from the EEPROM.
According to this, the changeover switch 16 can be omitted and the operation becomes simple.

Further, the video memory device 13 may be provided in the main body of the X-ray imaging apparatus or as an external connection device of the main body of the X-ray apparatus.

〔The invention's effect〕

As described above, according to the present invention, even when the video memory device is used (when the fluoroscopic image can be recorded in the video memory device), the X-axis for fluoroscopy can be selected by selecting either manual or automatic adjusting means. Since the X-ray condition manual / automatic adjustment selecting means for using the video memory device capable of adjusting the line condition is provided, when the video memory device is used, fluoroscopic and perspective image recording can be performed without resetting the X-ray condition depending on the subject. At the same time, there is an effect that the X-ray condition can be manually adjusted as in the conventional apparatus.

Further, if the selection switch group 2 is configured as shown in FIG. 3 and the changeover switch 16 in the figure is a remote control switch, the operation panel 1 does not need to be changed from the conventional device and the operation panel 1 does not need to be changed. There is also an effect that a remote switching operation of manual / automatic adjustment of the X-ray condition when using the memory device is possible.

Further, in place of the changeover switch 16, data rewritable RO
If M is used, the changeover switch 16 can be omitted and the operation can be simplified.

[Brief description of drawings]

FIG. 1 is a diagram showing an essential part of an embodiment of the device of the present invention, FIG. 2 is a block diagram of the device, FIG. 3 is a view showing an essential part of another embodiment of the device, and FIG. The figure which shows the principal part of the conventional apparatus, 5th
FIG. 7 to FIG. 7 are block diagrams of the device, and FIG. 8 is a block diagram showing an example of the internal configuration of the video memory device. 5 ... Automatic adjustment perspective selection switch, 6 ... Manual adjustment perspective selection switch, 7 ... Perspective selection switch for selecting use of video memory device, 13 ... Video memory device, 14 ...
Automatic adjustment perspective selection switch when using video memory device, 15 …… Manual adjustment perspective selection switch when using video memory device, 16 …… Manual / automatic adjustment switch, 17…
… Perspective switch circuit.

Claims (3)

[Claims] 1. An X-ray condition manual / automatic adjustment selecting means capable of adjusting X-ray conditions during fluoroscopy by selecting either manual or automatic adjusting means, and a video memory device for recording and reproducing a fluoroscopic image. In the X-ray fluoroscopic imaging apparatus including the above, even when the fluoroscopic image can be recorded in the video memory device, the X-ray condition for fluoroscopy can be adjusted by selecting either the manual or automatic adjusting means. X-ray fluoroscopy apparatus characterized in that it is provided with an X-ray condition manual / automatic adjustment selection means for using the video memory device. 2. The X-ray condition manual / automatic adjustment selecting means for using the video memory device is a switch which is selectively operated when a fluoroscopic image is recorded by the video memory device. An X-ray fluoroscopic apparatus according to the first aspect. 3. The X-ray condition manual / automatic adjustment selection means for using the video memory device is a CPU and data for selecting either manual or automatic adjustment means of the X-ray condition according to a given selection condition. The X-ray fluoroscopic imaging apparatus according to claim 1, comprising a rewritable ROM.