JPH04266745A - Medical panorama x-ray photographing device - Google Patents

Abstract

PURPOSE:To prevent erroneous photographing and simplify a photographing action by automatically setting an X-ray photographing device to the photographing preparation completion state when an X-ray photographing switch is pushed, then starting the photographing. CONSTITUTION:When an X-ray photographing switch 32 is pushed, a flip-flop 35 is set and a photographing preparation control circuit 36 is driven. When a preparation action is completed, a photographing preparation completion input 33 resets the flip-flop 35 and sets a flip-flop 37, and the AND signal of this output and the signal from the X-ray photographing switch 32 drives an X-ray photographing control circuit 39 only while the X-ray photographing switch 32 is pushed. When an X-ray photographing completion input 34 is outputted, X-ray photographing is completed.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical panoramic X-ray imaging apparatus.

0002

2. Description of the Related Art Conventionally, in a medical panoramic X-ray imaging apparatus, an operation switch on an operation panel is operated, and after preparatory operations for imaging are performed, an X-ray imaging switch located outside the X-ray room is operated. The operator must perform X-ray photography operations while checking the patient's condition from outside the X-ray room, so the X-ray photography switch is designed in a dead-man style so that it can be easily operated with one hand to prevent operational errors. It's a hand switch. Conventionally, when performing X-ray imaging operations, if the preparation status of each part for imaging is not completed,
It was set by manually setting it to the ready state or by pressing the reset switch to set it to the ready state. Additionally, some devices display an error message if preparations are not completed to prevent erroneous photography.

As shown in FIG. 4, in the conventional panoramic X-ray photography control device, when the reset switch is pressed, the signal is input to the set terminal of the flip-flop 27, the output Q rises, and the photography preparation control circuit 30 is driven. This output is held and output until the shooting preparation is completed and the shooting preparation completion input 24 is input to the reset terminal of the flip-flop 27. Shooting preparation completion input is flip-flop 28
It is also input to the set terminal of this flip-flop 28.
The output is raised and held until the X-ray imaging completion input 25 is input to the reset terminal. When the X-ray photography switch 26 is pressed in this state, the AND circuit 29 drives the X-ray photography control circuit 31 only while the X-ray photography switch 26 is pressed. Further, when the imaging is completed, the output of the AND circuit 29 is inverted, and the X-ray imaging control circuit 31 is stopped.

0004

[Problems to be Solved by the Invention] However, in the conventional medical panoramic X-ray imaging device, when the imaging device is not ready for imaging, it is necessary to check and reset the settings each time, or press the reset switch. This can cause patients to have to wait or cause erroneous images to be taken. Further, even when the reset switch is located outside the X-ray room, in order to perform this reset operation, it is necessary to take one's eyes off the patient and operate the KEY on the operation panel.

The present invention was invented in order to eliminate the troublesome operations in the conventional medical panoramic X-ray imaging apparatus, and allows the operator to position the patient without being distracted by operations on the operation panel. To provide a medical panoramic X-ray imaging device that can perform safer and more reliable imaging by paying attention only to conditions and safety.

[0006]

[Means and Effects for Solving the Problems] The present invention provides a medical panoramic X-ray imaging device that automatically takes images by pressing and holding the X-ray imaging switch even when each part of the device is in an arbitrary position. X after being set to ready state
This is a panoramic X-ray imaging apparatus characterized by starting radiography. In addition, the present invention provides an X-ray photography switch used only for X-ray photography with a reset function for automatically setting the photography preparation state, and the reset function is activated when the preparation is not completed. I made it a priority to work.

[0007]

[Embodiment 1] Hereinafter, embodiments of the present invention will be described based on the drawings. FIG. 1 is a block diagram of an X-ray imaging control device according to a first embodiment of the present invention. Reference numeral 1 denotes an operating device, which includes a keyboard, various operating switches, a reset switch for setting the shooting preparation state, and the like. 2 is an input/output interface unit (1/0), 3 is a CPU (central processing unit), 4 is a ROM that stores various programs and data, and 5 is a RAM that temporarily stores data, etc.
, 7 are address, data and control transmission lines. 8 is an imaging condition detector coupled to the X-ray imaging device 9 and detects whether the device is operating according to set conditions; 10 is a control circuit for setting imaging conditions; 1;
1, 14 and 17 are control circuits that control the rotation of the X-ray head to create a tomographic area for tomography, the feeding of the film, the feeding of the chin rest to determine the jaw position, etc., and 12, 15 and 18 are drive sources consisting of motors, etc. , 13, 16 and 19
2 is a position detector for detecting each position, and 22 is a remote unit installed outside the X-ray room, which is composed of an X-ray imaging switch 21 and a display 20 that displays tube voltage, imaging time, etc. The display 6 is the same as the display 20 and is included in the operating device 1.

Next, the operation will be explained based on FIGS. 1 and 2. FIG. 2 is a schematic side view showing the configuration of the medical panoramic X-ray imaging apparatus of the present invention. After moving the rotating arm 24 and film holder 25 in advance using the operating device 1 so as not to get in the way when introducing the patient, the patient is introduced, and the patient's dentition is placed in an optimal state on the trajectory of the tomographic region of the imaging device main body 23. The patient is aligned with the positioning beam 29 emitted from the device, and the operating device 1 is operated, and the X-ray device main body 23 is moved up and down along the support 30 to adjust the height of the patient's chin. Further, the chin rest 28 on which the chin is placed is moved by the chin rest control circuit 17 and the chin rest drive source 18 to adjust the position of the front teeth. After that, the head holder 3 incorporates the imaging condition detector 8 in order to set the tube voltage suitable for the patient.
1, the patient's head is held down, the head thickness is detected, and the tube voltage is automatically set by the imaging condition control circuit 10. The operator sets the film cassette 26 in the film holder 25, goes outside the X-ray room, and presses the X-ray photography switch 21 while checking the patient's condition through the lead glass.

When the operator continues to press the X-ray photography switch 21, the CPU 3 detects whether X-ray photography is possible using the photography condition detector 8, arm position detector 13, and film position detector 1.
6, etc., and if they are not in a possible state, the arm drive source 12, film drive source 15, etc. are controlled and driven until they are ready for photographing. In this state, CPU3
checks again whether or not X-ray photography is possible, confirms that the X-ray photography switch is pressed, and performs a series of X-ray tomography operations. When the operator releases the X-ray photographing switch 21 during X-ray photography, a dead man system is used so that the X-rays are immediately stopped.

[0010] When the CPU 3 checks the completion status of radiography, the radiography is completed, and the patient exits the X-ray room after moving the rotating arm 24 and film holder 25 so that the patient can easily exit the X-ray room. The operator takes out the film cassette 26 and performs development processing. As described above, the operator can automatically perform imaging simply by pressing the X-ray imaging switch 21. Note that if the X-ray photography switch 21 is pressed once and released when the preparation operation for X-ray photography is not completed, the preparation operation is performed and the device waits in a ready state. In this case, then
By continuing to press the radiography switch 21, normal X-ray photography is performed.

[0011]

[Embodiment 2] An embodiment in which control is performed by the CPU 3 has been described above, and next, an embodiment in which the operating circuit of the present invention is represented by a logic circuit will be described. FIG. 3 is an explanatory diagram showing the operating circuit of the panoramic X-ray control device of the present invention using a logic circuit. In the figure, 23 is a reset switch for setting the shooting preparation state, and 24
and 33 is an imaging preparation completion input that detects and communicates that radiography preparation has been completed, 26 and 32 are X-ray imaging switches, and 25 and 34 are X-ray imaging completion that detects and communicates that radiography has been completed. Input signals 27, 28, 35 and 37 are flip-flop circuits whose outputs are inverted at the set input and the reset input is given priority, 29 and 38 are AND circuits, 30 and 36 are control circuits for setting the photographing preparation state, 31 and 39 is a circuit for controlling X-ray photography.

Further, the embodiment shown in FIG. 3 is a circuit in which the X-ray photographing switch 32 has a reset switch function without using the reset switch 23 of the conventionally used panoramic X-ray photographing apparatus shown in FIG.

Accordingly, in the present invention shown in FIG. 3, when the X-ray photography switch 32 is held down, the signal is input to the set terminal of the flip-flop 35, the output Q rises, and the photography preparation control circuit 36 is driven. When the photographing preparation is completed, the photographing preparation completion input 33 is inputted to the reset terminal of the flip-flop 35, the output Q is inverted, and the photographing preparation control circuit 36 is stopped. At the same time, it is also input to the set terminal of the flip-flop 37, causing the output Q to rise. The AND circuit 38 combines that output with the signal from the X-ray photography switch 32 that is being held down.
By performing the AND operation, the X-ray drive circuit 39 is driven while the X-ray imaging switch 32 is pressed. When the X-ray photography is completed, the X-ray photography completion input 34 is sent to the flip-flop 37.
The output Q is inverted and the AND circuit 38 stops driving the X-ray imaging control circuit 39 even if the X-ray imaging switch 32 is kept pressed.

Furthermore, when the X-ray photography switch 32 is pressed once and released, the set terminal of the flip-flop 35 rises. Also, since the X-ray photography switch 32 is released once, the
The input line 42 of the 8 AND circuit falls to the LOW level. In this state, the operation circuit is similar to the conventional operation circuit shown in FIG. When the output Q is turned on and the X-ray photography switch 32 is pressed again, the input line 42 of the AND circuit 38 becomes High level, and the
The radiography control circuit 39 is driven. AN when shooting is completed
The output of the D circuit 38 is inverted and the X-ray imaging control circuit 39 is stopped.

[0015]

[Effects of the Invention] As explained above, according to the present invention,
Just by pressing the X-ray radiography switch, the system automatically sets the radiograph preparation state and starts radiography, so there is no need to worry about preparatory work for radiography, making it easy to operate, preventing erroneous radiography, and positioning the patient. The accuracy and safety of X-ray imaging operations can be improved by paying attention only to safety and safety.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a circuit configuration of a panoramic X-ray imaging control device showing a first embodiment of the present invention.

FIG. 2 is a schematic side view showing the configuration of a panoramic X-ray imaging control device in Embodiment 1 of the present invention.

FIG. 3 is an explanatory diagram of an operation circuit of a panoramic X-ray imaging control device showing a second embodiment of the present invention.

FIG. 4 is an explanatory diagram showing an operation circuit of a conventional panoramic X-ray imaging control device.

[Explanation of symbols] 1 Operation device 2 1/0 3 CPU 4 ROM 5 RAM 6. Display 7 Bus 8 Shooting condition detector 9. X-ray imaging device 10 Imaging condition control circuit 11 Arm control circuit 12 Arm drive source 13 Arm position detector 14 Film control circuit 15 Film drive source 16 Film position detector 17 Chinrest control circuit 18 Chinrest drive source 19 Chinrest position detector 20 Display 21　X-ray photography switch 22 Remote part 32　X-ray photography switch 33 Shooting preparation completion input 34　X-ray photography completion input 35 Flip-flop circuit 36 Shooting preparation control circuit 37 Flip-flop circuit 38 AND circuit 39 X-ray photography control circuit 42 Input line

Claims (3)

[Claims] Claim 1: In a medical panoramic X-ray imaging device, even if each part of the device is in an arbitrary position, by continuing to press the X-ray imaging switch, the imaging ready state is automatically set, and then the X-ray A panoramic X-ray imaging device characterized by starting imaging. [Claim 2] When the preparation for radiography is not completed, pressing the X-ray photography switch once sets the radiographing preparation complete state, and when the preparation for radiography is completed, pressing and holding the X-ray photography switch starts radiography. The medical panoramic X-ray imaging apparatus according to claim 1. 3. A medical panoramic X-ray imaging apparatus having a remote operation function by installing an X-ray imaging switch having the above function outside the X-ray room.