JPH06223995A - X-ray image pickup device - Google Patents

Abstract

PURPOSE:To provide an X-ray image pickup device with which mental burden on an operator can be reduced, and with which interruption of medical examination because of failure of timer reset operation can be prevented. CONSTITUTION:An X-ray image pickup device comprises an image intensifier 3 for X-ray fluoroscopy, an image pickup tube 5, and a monitor 6, and an X-ray image is taken by a fluorographic camera 7 at a desired timing in the X-ray fluoroscopy with an identification number of a testee. An integration timer 12 to control an exposure time of the testee to the X-ray is automatically reset synchronously with carry of the testee identification number in accordance with change of the testee. The carry of the testee identification number is performed in accordance with fluorography of a specified number of pictures, manual operation, etc., in accordance with change of the testee.

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, and more particularly, to an X-ray imaging apparatus having an X-ray fluoroscopy mechanism for capturing an X-ray image on an indirect imaging camera at a desired timing during X-ray fluoroscopy. is there.

[0002]

2. Description of the Related Art A fluoroscopy X-ray TV apparatus has a fluoroscopy X-ray system for limiting the fluoroscopy X-ray irradiation time per subject.
There is a timer that integrates the irradiation time of the X-rays (totalizing timer for fluoroscopy). When the total irradiation time of the fluoroscopy X-ray reaches a preset value, an alarm sounds or the fluoroscopy X-ray does not appear even if you press the irradiation button. In some cases, a warning is given to the subject for excessive X-ray irradiation.

Further, in the conventional device, when the operator manually resets the timer when a warning state is caused by the integrating timer, the fluoroscopic X-rays can be irradiated again for a set time, and the operator can By manually resetting the timer when the examiner changes, the fluoroscopic X-ray irradiation time per subject is managed.

[0004]

However, in the conventional method of manually resetting the timer, this operation may be forgotten.

Forgetting the resetting operation of the timer, when photographing a large number of subjects continuously such as in a group examination, the fluoroscopic X-ray irradiation time per subject is shorter than the setting time of the evening imager. Since it is normal, the warning will not be issued by the first subject, and the warning will be issued during the second and subsequent examinations.

Conventionally, the reset operation of the timer has been performed manually, so that the operator must be careful to perform the reset operation of the timer when the examinee changes. In addition, I sometimes forget to pay attention even when I was careful, and sometimes an alarm sounded or fluoroscopy was stopped during the examination.

The alarm sounding or the absence of fluoroscopic X-rays during the examination not only hinders the examination, but also forces the operator to perform an extra operation of releasing the warning state (resetting the evening imager). Will be done.

Therefore, the operator must always be careful to perform the timer resetting operation when the subject is changed so as not to be in a warning state, which is mentally burdensome.

An object of the present invention is to provide an X-ray imaging apparatus which solves the above problems, reduces the mental burden on the operator, and at the same time prevents interruption of the examination due to forgetting to reset the timer.

[0010]

In order to solve the above-mentioned problems, the present invention has an X-ray fluoroscopic mechanism and projects an X-ray image onto an indirect photographing camera at a desired timing during fluoroscopy. In an X-ray imaging apparatus, an integration timer that manages the X-ray exposure time of a subject, an imaging mechanism that simultaneously captures the subject identification number and an X-ray image on an indirect imaging camera, and the subject identification number A configuration is adopted in which the control unit is moved up based on a predetermined condition according to the change of the subject and the integration timer is reset in synchronization with the advancement of the subject identification number.

[0011]

With the above configuration, the integration timer can be automatically reset according to the change of the examinee. Therefore, an alarm sounds or a fluoroscopic X-ray is emitted during the examination due to forgetting to reset the integration timer. It is possible to prevent interruption of medical examinations such as the disappearance.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the drawings.

FIG. 1 shows a schematic structure of an X-ray TV apparatus used for mass screening of the stomach according to the present invention. A fluoroscopic X-ray is emitted from the X-ray tube 1 by a predetermined switch operation, and an image of the abdomen of the subject 2 who has taken a contrast agent such as barium is converted into visible light by an image intensifier 3 and then mirrored. 4. The image is displayed on the monitor 6 through the image pickup tube 5.

While observing the monitor, the operator moves the bed or gives an instruction to the subject to move, and finds a part to be photographed.

When the operator presses the photographing button on the operation unit 10, a mirror reversing circuit (not shown) causes the motor 9 to rotate and the mirror 4 to be reversed so that the image intensifier 3
The optical path of the output image of is directed to the indirect camera 7 side. Next X-ray tube 1
A radiographic X-ray is emitted from the camera, and an image of the abdomen of the subject is recorded on the film 8 of the indirect camera 7.

At the same time as the recording of the X-ray image, the indirect camera 7
A subject identification number is imprinted in or near the image by means of a display device such as an LED incorporated therein. After that, the film 8 is rolled up, and the indirect camera 7 prepares for the next shooting. The mirror 4 is inverted to face the image pickup tube and returns to the see-through state.

2 and 3 show the position of the mirror 4 during fluoroscopy and indirect photography, respectively. In addition, FIG. 4 shows a display device (LED or the like) 72 for exposing a subject identification number.
The arrangement of the imprint lens 73 is shown. In addition,
2 and 3, reference numeral 51 indicates a lens of the image pickup system, and 71 indicates a lens of the indirect camera 7.

The operation of the X-ray generator 11 for driving the X-ray tube 1 is controlled by an integration timer 12, which integrates the fluoroscopic X-ray irradiation time and the irradiation time integration is preset. When the specified value is reached, control is performed such that an alarm is sounded and fluoroscopic X-rays are not emitted.

The subject identification number recorded on the film is
The camera control unit 13 is designed to operate based on a predetermined condition. The conditions include the following.

1) The number of frames to be photographed per person set in advance by a camera operation unit (not shown) is automatically raised after photographing.

2) In the above example, when photographing more than a set number of frames or interrupting the examination in the middle (less than the set number of frames), it is manually advanced.

3) After photographing the required number of frames, manually move them up.

In this embodiment, the camera control unit 13 outputs a timer reset signal in synchronization with the movement of the subject identification number, and this signal resets the integration timer 12 via the operation unit 10.

FIG. 5 shows a photographing timing chart for one frame. The first stage and the second stage are the state of the see-through switch and the photographing switch of the operation unit 10, and the irradiation of the see-through X-ray (the third stage) is performed when the see-through switch is ON. It is the length of this period that is counted by the integration timer 12.

When the photographing switch is ON, the mirror 4 is reversed (fifth step) and the X-ray is exposed (fourth step), and the indirect camera 7 takes a picture. The identification number is imprinted (sixth stage) during the shooting period, and the film is wound (seventh stage) after the shooting is completed.

When the identification number is automatically moved up based on the above conditions 1) to 3), the integration timer 12 can be automatically reset according to the change of the examinee. There is no interruption of the medical examination due to forgetting the reset operation of the integration timer 12 (such as an alarm sounding during the medical examination or no X-ray fluoroscopy), and the medical examination can be performed smoothly.

FIG. 6 is a flow chart showing the control performed by the camera controller 13, the integration timer 12 and the X-ray generator 11. At the start of the examination, the integration timer 12 is automatically reset (step S1), and the fluoroscopy switch of the operation unit 10 is turned on (step S2) to start fluoroscopy (step S3). The integration timer 12 is integrated at this time.

When the set time of the integration timer 12 corresponding to a predetermined one-time X-ray exposure limit time has come (step S4), the fluoroscopy, that is, the X-ray exposure is stopped (step S7). In this case, the operator manually resets the timer (step S8) to return to the transparent state.

If the time is within the set time, the indirect camera 7 can shoot an image based on the operation of the shooting switch (steps S5, S6, S9). Only during the shooting, the mirror 4 is moved to the position shown in FIG. At the time of photographing, the subject identification number is imprinted on the film 8 at the same time.

If the see-through switch is not turned off (steps S10 and S11), the see-through and photographing are repeated, and the integration timer 12 continues the integration.

When the fluoroscopic switch is once turned off (step S11) and the examination is not completed (step S12) and the examinee is not replaced, the fluoroscopic switch is turned on (step S2) to return to the fluoroscopic state. (Step S
3).

When the predetermined photographing is completed for the subject and the subject is changed to the next subject (step S14), the subject identification number is moved up based on the predetermined condition and integrated in synchronization with it. The timer 12 is reset.

According to the above-mentioned embodiment, when the subject identification number is increased in response to the change of the subject, the integrating timer 12 for managing the X-ray exposure time is automatically reset. Since it is no longer necessary for the operator to be careful about the reset operation of the timer that was conventionally performed when the subject was replaced, the mental burden on the operator is greatly reduced and the reset operation is forgotten. The examination can be smoothly performed without interruption of the examination due to (the alarm sounds during the examination, the fluoroscopic X-ray is stopped, etc.).

[0034]

As is apparent from the above, according to the present invention, there is provided an X-ray imaging apparatus having an X-ray fluoroscopy mechanism for capturing an X-ray image on an indirect imaging camera at a desired timing during fluoroscopy. , A cumulative timer for managing the X-ray exposure time of the subject, an imaging mechanism for simultaneously capturing the subject identification number and the X-ray image on the indirect imaging camera, and the subject identification number for the subject replacement According to the change of the subject, the integration timer is adopted in accordance with the change of the subject because the configuration has a control means for resetting the integration timer in synchronism with the advance of the subject identification number. Because it can be automatically reset, an alarm sounds during the examination due to forgetting to reset the integration timer, interruption of the examination such as the fluoroscopic X-ray disappearing, etc. is prevented, and excellent X-ray photography that can perform the examination smoothly It is possible to provide a device.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a configuration of an X-ray imaging apparatus adopting the present invention.

FIG. 2 is an explanatory diagram of a main part of the apparatus of FIG. 1 when seen through.

FIG. 3 is an explanatory diagram of a main part of the apparatus of FIG. 1 when photographing.

4 is an explanatory diagram of an indirect camera of the apparatus of FIG.

5 is a timing chart diagram for explaining the operation of the apparatus of FIG. 1 during a medical examination.

FIG. 6 is a flowchart illustrating a control procedure of an integration timer of the device shown in FIG.

[Explanation of Codes] 1 X-ray tube 2 Subject 3 Image intensifier 4 Mirror 5 Imaging tube 6 Monitor 7 Indirect camera 8 Film 9 Motor 10 Operating part 11 X-ray generator 12 Accumulation timer 20 Bed

Claims (1)

[Claims] 1. An X-ray imaging apparatus having an X-ray fluoroscopy mechanism for capturing an X-ray image on an indirect imaging camera at a desired timing during X-ray fluoroscopy, and managing the X-ray exposure time of a subject. An integrating timer, an imaging mechanism that simultaneously captures a subject identification number and an X-ray image on an indirect imaging camera, and the subject identification number is advanced based on predetermined conditions in response to replacement of the subject, and the subject is also examined. An X-ray imaging apparatus having a control means for resetting the integration timer in synchronization with the advancement of the person identification number.