JPS6343095B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a spot shot device for an X-ray fluoroscopy table.

An X-ray fluoroscopic photographing table is constructed by installing an X-ray tube, an X-ray television device, and a spot shot device for feeding film into a photographing position during photographing on a bed top plate that can be raised and lowered.

Then, the subject is placed on the bed top, and while performing X-ray fluoroscopy using the X-ray television system, when the desired condition is reached, an imaging command is given, and the spot shot system operates to place the film within the X-ray irradiation field. Send and take pictures.

When photographing the affected area of a subject using such a spot shot device on an X-ray fluoroscopic imaging table, if the target area of the subject is smaller than the film size, one film can be divided into 1/2, 1/4, 1/2
A method of dividing the image into 8 parts or other methods is often used, depending on the situation.

This method uses a division mask to remove the portion of the film that is to be photographed, such as 1/2, 1/4, or 1/8 of the film size, and masks the other portions of the film. The image is taken in areas that are not masked by moving the position as necessary. In the case of this method, conventionally, before shooting, a division format such as 1/2, 1/4, 1/8, etc. was selected using a selection switch, and 1/2, 1/4, 1/8, etc.
Either you can continue to divide the film in the same way until all of the films have been shot, or you can change the division selection during shooting, for example by splitting the film into 1/2 and then shooting the rest in 1/4 format. A divided mask that meets the conditions is set at the photographing position, and the unphotographed portion of the film is set in advance to be sent to the portion of the divided mask that serves as an exposure window before photographing begins. However, with this type of spot shot device, it is necessary to specify the division format and the portion of the film to be photographed each time an image is to be taken. Therefore, when photographing affected areas of various sizes, if the images are taken in several parts, several pieces of film are required. If the split selection is changed during shooting, the operator must memorize the position of the used part of the film and be careful to avoid double exposure. There were some drawbacks such as not being able to do so.

The present invention has been made in view of the above circumstances, and includes an operation device that includes a keyboard for inputting a shooting program, a program shooting switch for shooting according to the shooting program, and a display device for displaying the program input from the keyboard. A shooting program memory for storing the shooting program input from the operation section, a program check circuit for checking whether there are any errors in the input program, and a display device for displaying the contents of the shooting program memory. a program sequence control circuit that sequentially reads out programs according to the shooting program when the program shooting switch is pressed, and a program decoding circuit that outputs a control output according to the meaning given by the read program. A spot shot device that is equipped with a computer and configured to allow arbitrary combinations of divided shots to be taken continuously without worrying about double exposure by programming a pre-considered shooting order before shooting. The purpose is to provide

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the control device part of this device. In the figure, 1 is a keyboard for inputting commands, data, etc., which is operated to input the shooting program via the input interface 2. do. The input interface 2 has functions such as sending and receiving various information and temporarily holding it. 3 is a program shooting switch, which is used when you want to take continuous shots according to the shooting program entered on the keyboard 1. When this switch is pressed, the program sequence control controls various controls such as reading, writing, address selection, and output timing. Circuit 4 begins to operate. 5 is a program check circuit provided on the output stage side of the input interface 2;
This program circuit 5 checks whether the program inputted from the keyboard 1 via the interface 2 can be executed by the apparatus of the present invention, and whether there will be repeated exposure. Reference numeral 6 denotes a photographing program memory for storing photographing programs, etc. Programs checked and approved by the program check circuit 5 are sent to the photographing program memory 6 and stored therein. 7 is a display control circuit, 8
is a display circuit, and the program sent from the program check circuit 5 to the photographing program memory 6 is also given to this display control circuit 7 at the same time.
In order to display the content in accordance with the content, the display control circuit 7 controls the display device 8 to display the content according to the data of the given program.

After inputting the shooting program, when the program shooting switch 3 is pressed, the switch 3 sends a program shooting command to the program sequence control circuit 4 via the input interface 3, and the program sequence control circuit 4 is driven. Control is performed to sequentially read out the stored programs from the photographing program memory 6, and this is applied to a program decoding circuit 9 which decodes the contents of the program and generates a control output according to the contents. 1
0 is an output interface for external output of the control output decoded and outputted by this program decoding circuit 9, and the control output is transmitted to an external device, for example, an X-ray control device (not shown) via this output interface 10. The voltage is applied to the film drive circuit 11, etc., and X-ray photography is performed. The film drive circuit 11 is operated by the control output and has the function of controlling the feeding position of the film cassette that holds the division mask and the film, and also controls the division mask and the film cassette with a predetermined priority according to the shooting order based on the division format of the film. It has a function of setting the area of the film to be photographed and setting the feeding position of the film cassette and the position of the division mask accordingly.

Next, the operation of one embodiment of the apparatus of the present invention constructed as described above will be explained. Before taking an X-ray, an operator such as a doctor or a technician carefully considers which part of the subject is to be imaged, and then uses the keyboard 1 in Figure 1 to select the optimal division according to the part. An imaging program for one film is input for commands such as division format and X-ray exposure to be executed in accordance with the following order.

The input program is input to the input interface 2, where it is temporarily held, and is then given to the program check circuit 5 to check whether the program can be executed in this device, whether there is any double exposure, and whether there are any grammatical errors in the program. The program check circuit 5 checks whether there is a program or not.
If there is an error in the program, the program check circuit 5 outputs an error signal to the display control circuit 7, and the display control circuit 7 gives a signal to display the error to the display device 8 so that the error can be displayed. If there is no error, the photographing program is transferred from the program check circuit 5 to the photographing program memory 6, and the photographing program is sequentially stored in the photographing program memory 6 under the control of the program sequence control circuit 4. be done.

At the same time, the input contents are displayed on the display device 8 by the display control circuit 7.

For example, when equipped with a keyboard 1 as shown in Fig. 2, the first and second X-ray exposures are taken in four parts on the film FM as shown in Fig. 3, and the third If you want to take a picture in two parts, input as follows. First is the edit key for instructing editing functions.
When the Edit key is pressed, the input interface 2 enters program input mode. Next, according to the shooting order, press the F key to instruct the split format.
Numeric key to specify the number of divisions, key to indicate the division,
Assuming that the program is set by sequentially inputting a key to instruct X-ray exposure, a key to instruct end, etc., if the program is to be divided into 1/4, 1/4, and 1/2 in order. To do this, first enter the key □F□4□ to program that the first exposure is in 4-division format. Furthermore, in 4-part format
Since the image is to be taken by irradiating X-rays, press the □X key to instruct X-ray irradiation, and the □ and □ keys to indicate the break. Continue the second and third exposures □F□4□,□
X
Input □, □F□2□, □X□:. Here, □, indicates a break in the operation, and □: indicates the end of the photographing program.

After inputting the above information, if there is no error in the program, Store is the store key that gives the command to memorize the input shooting program.
When the key is pressed, a storage command is given to the program sequence control circuit 4 via the input interface 2, and this program sequence control circuit 4 gives an address command and a write command to the photographing program memory 6, so that the previously inputted The photographing program is stored in the photographing program memory 5.
This state is shown in FIG.

After inputting the program as described above, when the program shooting switch 3 is pressed, a shooting command is given to the program sequence control circuit 4 via the input interface 2, which causes the program sequence control circuit 4 to operate and start shooting. The programs in the program memory 6 are read out from the beginning in the order in which they were input.

That is, as can be seen from FIG. 4, data "F4" at the leading address is read out first.
This program is sent to the program decoding circuit 19, which decodes the data F4 as indicating 4-division photography, generates a 4-division photography command S4, and sends it to the output interface 10. . This allows the first size to be divided into four parts.
A control output S4 for determining the film position and division mask for the second photographing is sent to the film drive circuit 1 via the control output interface 10.
1 is input.

As a result, the film drive circuit 11 sets the 4-division mask at the photographing position in the spot shot device, and also sets the film at the position where the 4-division image will be photographed. When the setting is completed, a filmset completion signal A is applied from the film drive circuit 11 to the program sequence control circuit 4 via the input interface 2.

As a result, the program sequence control circuit 4
is the next command “X” in the shooting program memory 6
is read out and given to the program decoding circuit 9. The program decoding circuit 9 decodes this as an X-ray exposure command and outputs an X-ray exposure signal to an X-ray controller (not shown) for controlling X-ray exposure via the output interface 10. . The X-ray controller emits X-rays based on this X-ray exposure signal, and at the same time sends an X-ray signal to the spot shot device indicating that X-ray exposure is in progress.
Outputs signal B during radiation exposure. This signal is applied to the program sequence control circuit 4 via the input interface 2, and the program sequence control circuit 4 controls to proceed to the next step of the imaging program at the trailing edge of this X-ray exposure signal.

The above operations are repeated and X-ray imaging is performed according to the program until ":" appears in the program. In other words, by inputting a pre-considered shooting program in advance, the operator can automatically take any split shots in succession, controlling the specified split format so that the unshot portions of the film are exposed. It is possible to do so.

As described above, according to the present invention, a spot shot device is provided which can perform divided shooting in various combinations continuously without erroneous shooting by inputting a shooting program considered in advance. It becomes possible to provide Furthermore, it is easy to imagine an application in which the photographing program memory is made into a non-volatile memory, in which frequently used photographing programs are input in advance and can be used as needed.

Note that the present invention is not limited to the examples, but
It is possible to make various modifications and implementations without changing the gist of the invention.

As described above, the present invention includes a keyboard for inputting a shooting program that specifies the format and operation of divided shooting in the order of shooting, a program check circuit that checks the contents of this shooting program and determines whether it is executable, and a shooting program memory for storing a shooting program; a display device for displaying the input shooting program and displaying an error when the judgment result of the program check circuit is negative; and a display device for displaying the input shooting program when the judgment result of the program check circuit is negative; The imaging program is controlled to be sequentially written into the imaging program memory, and the contents of the imaging program memory are written each time a program imaging command, a set completion command, and a signal indicating the end of the X-ray exposure period are received. a control circuit that sequentially controls reading one step; a program decoding circuit that decodes the contents of the program read from the photographing program memory and generates a control output according to the contents;
Setting the division mask of the division format indicated by the control output, and setting so that the area to be used for photographing the film according to the priority order predetermined based on the division format and the number of shots is set at the photographing position, and when the setting is completed, the above-mentioned set completion command is issued. The camera is equipped with a drive circuit that generates the image data, and a shooting program indicating the division format and operation in the shooting order is entered in advance on the keyboard, and a program check circuit checks whether this program can be executed without problems and then executes it. When possible, the shooting program is stored in the memory, and when shooting, the stored shooting program is read out and the division mask and film settings are made according to the contents of the program. To provide a spot shot device with excellent features, such as being able to take pictures of various combinations of divided shots in a specified order by inputting them, and also to take pictures continuously without causing double exposure to the same part of the film. can do.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the device of the present invention, FIG. 2 is an example of a keyboard used therein, FIG. 3 is a diagram for explaining an example of divided photography by this device, and FIG. FIG. 4 is an explanatory diagram showing an example of the photographing program of FIG. 3 stored in a program memory. DESCRIPTION OF SYMBOLS 1... Keyboard, 2... Input interface, 3... Program shooting switch, 4... Program sequence control circuit, 5... Program check circuit, 6... Shooting program memory, 7...
... Display control circuit, 8 ... Display device, 9 ... Program decoding circuit, 10 ... Output interface,
11...Film drive circuit.

Claims (1)

[Claims] 1. In a spot shot device used in an X-ray fluoroscopic imaging device or the like and which performs imaging by sending a film to an imaging position during imaging, an input means for inputting an imaging program for specifying divisional imaging when imaging the film, and this input means. a program check circuit for determining whether the photographing program from the means can be executed; a memory for storing the photographing program; a display device for displaying at least a negative determination result of the program check circuit; and a display device for displaying at least a negative determination result. A spot shot device comprising a drive control circuit that performs a photographing operation according to a photographing program when the photographing program is enabled.