JP5694869B2 - Radiography equipment - Google Patents

Description

  The present invention relates to a radiation imaging apparatus capable of confirming the size of a radiation detector, the installation position of the radiation detector, and the radiation exposure range.

  Conventionally, in a radiation imaging apparatus including an imaging table capable of installing radiation detectors of different sizes, once the radiation detector is installed on the imaging table, and the subject stands in front of the radiation detector. The radiation detector size and installation position (installation range) can not be easily visually confirmed, the technician moves to the imaging table, looks into the imaging table from the side, the size and installation of the radiation detector The confirmation of the size and installation position of the radiation detector, such as confirmation of the position, was very troublesome.

  The following Patent Document 1 discloses a radiation imaging apparatus including a casing of a cassette in which a radiation conversion panel (radiation detector) is installed, and a casing on which an index indicating the installation position of the radiation conversion panel is displayed. Have been described.

  Patent Document 2 below is an X-ray diagnostic apparatus capable of detecting the size of a solid flat detector (radiation detector), and an X-ray (radiation) light source according to the detected size of the detector. An X-ray diagnostic apparatus for adjusting the diaphragm is described.

  Further, Patent Document 3 below describes an X-ray operation stop device provided with a projection sighting mechanism that can irradiate the same range as an X-ray (radiation) irradiation field with visible light.

JP 2009-82372 A Japanese Patent No. 3388139 JP 7-148159 A

In the invention described in Patent Document 1, although the panel installation position in the casing of the cassette can be confirmed, when the subject stands before the cassette, the relationship between the subject and the panel installation position, the radiation irradiation field and the panel installation position It is difficult to visually confirm the relationship.
In addition, the invention described in Patent Document 2 requires a large amount of apparatus because a radiation detector size detection device and a mechanism for transmitting the detected radiation detector size to an X-ray source (radiation source) are required. Also, the relationship between the subject and the radiation detector cannot be confirmed visually.
In the invention described in Patent Document 3, the X-ray (radiation) irradiation field can be visually confirmed, but the size and installation position of the radiation detector are not taken into consideration, and are described and suggested. Not.

  It is an object of the present invention to provide an operator (engineer) who is able to perform radiation imaging by observing the size of the radiation detector, the installation position of the radiation detector, and the radiation exposure even when the subject overlaps the imaging table. An object of the present invention is to provide a radiation imaging apparatus capable of easily confirming the range visually.

In order to solve the above problems, the present invention includes a photographing stand installation position of the number of pre double for sizes of radiological detector is Kerra advance, the size of the radiation detector to be installed in the image capturing base and and the image capturing base the radiation detector installation range of the installation position location operation input unit for inputting shown in, based on the installation range corresponding to the installation position of the input the radiation detector, a first A first light source unit capable of irradiating the installation range of the radiation detector on the imaging table with illumination light; and a second light source capable of irradiating the radiation exposure range on the imaging table with second illumination light. A light source unit, a radiation source that emits radiation, a first light source unit, the second light source unit, and an imaging control unit that controls irradiation and exposure from the radiation source, respectively. 1 light source unit illuminates the first illumination light. A first light source and a first light source diaphragm that adjusts the irradiation field thereof, and the second light source unit includes a second light source that irradiates the second illumination light and an irradiation field of the second light source. A second light source diaphragm to be adjusted, and the second light source diaphragm also functions as a light source diaphragm of the radiation source, and adjusts openings of the first light source diaphragm and the second irradiation diaphragm, Radiation imaging, wherein irradiation from the first light source and the second light source and exposure from the radiation source are respectively controlled by the imaging control unit according to an instruction from the operation input unit. Providing equipment.

  The second light source diaphragm preferably contains a lead component and blocks radiation.

Further, the first illumination light from the first light source and the second illumination light from the second light source have different colors, and the color difference is obtained by simultaneously irradiating the imaging table. It is preferable that the installation range corresponding to the installation position of the radiation detector and the radiation exposure range can be displayed at the same time.

In addition, the first illumination light from the first light source and the second illumination light from the second light source have different irradiation intensities. It is preferable that the installation range corresponding to the installation position of the radiation detector and the radiation exposure range can be displayed simultaneously based on the difference in irradiation intensity.

Further, the predetermined installation position of the multiple for each of the size of the radiation detector in the imaging platform is for one size of the radiation detector, the vertical direction (detector upper, detector center, detection It is preferable that there are a total of nine places (three lower ends) and three horizontal directions (detector left end, detector center, detector right end).

Further, the operation input unit irradiates the radiation range on the imaging table with a first switch that irradiates the installation range corresponding to the installation position of the radiation detector on the imaging table. It is preferable to have the 2nd switch which performs and the 3rd switch which exposes the said radiation.

Furthermore, the operation input unit has a fourth switch that alternately irradiates the installation range corresponding to the installation position of the radiation detector and the exposure range of the radiation on the imaging table. It is preferable to provide.

Furthermore, the operation input unit has a three-stage switch, and the three-stage switch is located in the first stage, the installation range corresponding to the installation position of the radiation detector on the imaging table. In the second stage, the exposure range of the radiation is irradiated on the imaging table so as to overlap the installation range of the radiation detector, and the radiation is exposed in the third stage. It is preferable to do.

Further, the operation input unit has a three-stage switch, and the three-stage switch irradiates the radiation exposure range on the imaging table in the first stage, and the second stage. In the step, the installation range corresponding to the installation position of the radiation detector is irradiated on the imaging table so as to overlap the exposure range of the radiation, and in the third step, the radiation is exposed. It is preferable to do.

In addition, the three-stage switch is a part that does not correspond to any of the first stage, the second stage, and the third stage when it is stopped for a predetermined time in the first stage or the second stage. It is preferable that the installation range corresponding to the installation position of the radiation detector and the exposure range of the radiation are alternately and repeatedly irradiated onto the imaging table when stopped for a predetermined time.

  Moreover, it is preferable that the light flux of the radiation that has been exposed from the radiation source and passed through the second light source diaphragm is included in the opening of the first light source diaphragm.

  Furthermore, when the irradiation range of the second illumination light from the second light source unit deviates from the irradiation range of the first illumination light from the first light source unit on the imaging table. It is preferable to include warning means for giving a warning.

  In addition, when the warning is given, it is preferable that the warning means stops the radiation exposure from the radiation source through the imaging control unit.

According to the present invention, since the size and installation position of the radiation detector are displayed on the imaging table by visible light, the operator (engineer) can visually confirm the size and installation position of the radiation detector. Even when the subject is overlapped with the imaging stand, the size and installation position of the radiation detector can be confirmed.
In addition, by irradiating visible light indicating the radiation exposure range on the visible light indicating the size and installation position of the radiation detector, the radiation exposure range can be visually checked simultaneously with the size and installation position of the radiation detector. Can be confirmed.

It is a schematic diagram which shows one Embodiment of the radiography apparatus which concerns on this invention. It is explanatory drawing which shows the size and installation position of a radiation detector, and the radiation exposure range on the imaging stand of the radiography apparatus which concerns on this invention. In the radiography apparatus which concerns on this invention, it is explanatory drawing which shows the size and installation position of a radiation detector when a to-be-photographed object stands in front of an imaging | photography stand, and the radiation exposure range. It is explanatory drawing explaining the relationship between the movable light source aperture stop and irradiation field of the radiography apparatus which concerns on this invention. It is explanatory drawing which shows schematic structure of the 2nd light source part and radiation source of the radiography apparatus which concerns on this invention. It is explanatory drawing which shows schematic structure of the 3 step | paragraph type switch installed in the operation input part of the radiography apparatus which concerns on this invention.

  A radiation imaging apparatus according to the present invention will be described below in detail based on a preferred embodiment shown in the accompanying drawings.

<Configuration of radiation imaging apparatus>
FIG. 1 is a schematic view of an embodiment showing the configuration of the radiation imaging apparatus of the present invention.
As shown in FIG. 1, the radiation imaging apparatus 10 of the present invention includes a radiation source 12 that exposes radiation, a radiation source moving mechanism 13 that moves the radiation source 12 in the height direction, and radiation detectors having different sizes. The imaging table 14 which can be installed at a plurality of different installation positions, the radiation detector 16 which is installed on the imaging table and detects the exposed radiation, and the first installation range of the radiation detector 16 with respect to the imaging table. A first light source unit 18 that irradiates the illumination light (visible light) and a second illumination light (visible light) that irradiates the radiation range (irradiation field) of the radiation of the radiation source 12 to the imaging table. Radiation exposure from the two light source units 20 and the radiation source 12, and irradiation of the first illumination light from the first light source unit 18 and the second illumination light from the second light source unit 20, respectively. The imaging control unit 22 to be controlled and the size and installation of the radiation detector 16 It includes a location (installation range), the radiation source 12, the first light source section 18, and an operation input unit 24 for inputting operation instructions of the second light source unit 20.

The radiation source 12 is fixed at a predetermined position toward the imaging table 14, and the exposure range thereof is adjusted by a light source aperture 20a of the second light source unit 20 described later. An operator (engineer) directs radiation from the radiation source 12 by instructing the operation input unit 24 to perform radiation imaging.
The radiation source 12 includes a height adjusting unit 13, and the height (z-direction position) of the radiation source 12 is moved in conjunction with the height (z-direction position) of the imaging table 14.

The imaging table 14 can install radiation detectors (panels) 16 having different sizes at a plurality of different installation positions. As shown in FIG. 2, a predetermined panel size and a plurality of installation positions corresponding to the panel size are preliminarily written on the imaging table 14 with dotted lines.
For example, there are three types of installation positions of the panel 16 in the vertical direction (vertical direction) of the photographic stand 14 (upper end, center, and lower end) and three types in the horizontal direction (horizontal direction) of the photographic stand 14. A total of nine types of installation positions (left end, center, right end) may be provided. Therefore, in this case, there are (number of types of panel sizes) × 9 types of installation positions entered on the imaging stand. In FIG. 2, the panel 16 is installed at the center / right end.
The operator can easily install the panel 16 at a desired position by confirming the panel size of the panel 16 and installing the panel 16 according to the dotted line provided on the photographing stand 14.
For example, the panel 16 on the photographic stand 14 is provided with an operational rail that can support the panel 16 on the back of the photographic stand 14, and the panel 16 is installed by fixing the rail. May be. Various known methods can be used for the method of installing the panel 16.
The imaging table 14 is movable in the height direction (z direction) according to the physique of the subject P and the imaging region. For example, a rail is installed on a support column that supports the imaging table 14, and the imaging table 14 has wheels between the support column and the imaging table 14 is manually moved up and down by these rails and wheels. It may be able to move.

The panel 16 is installed behind the imaging table 14 and detects radiation that is exposed from the radiation source 12 and transmitted through the subject. The panel 16 may be, for example, a radiation film and a portable film cassette having the radiation film installed therein, or a portable IP (Imaging Plate) cassette. Various known radiation detectors can be used.
The panel 16 can be of various sizes such as six-cut, four-cut, large-angle, half-cut, and the like. A plurality of installation positions are provided in advance for each of these sizes, and the installation positions are indicated by dotted lines on the imaging table 14.

  In this embodiment, the movement of the radiation source 12 and the imaging table 14 is only considered in the height direction, and the SID (distance between the radiation source 12 and the radiation detector 16) is fixed in principle. Of course, the present invention is not limited to this, and the SID may change. When the SID changes, it is necessary to input not only the size and installation position of the panel 16 but also the change amount of the SID from an operation input unit described later. Based on the changed SID, the size of the opening 18d of the first light source stop 18a described later is changed by the light source control unit 22 described later so that the first illumination light is irradiated to the installation range of the panel 16. It is necessary to make it. Note that the larger the SID, the smaller the size of the opening 18d, and the smaller the SID, the larger the size of the opening 18d.

The first light source unit 18 that irradiates the first illumination light includes a first light source stop 18a that squeezes an irradiation field of the irradiation light, a first light source 18b that irradiates illumination light that is visible light, A half mirror 18c that reflects the illumination light from the light source 18b in the direction of the imaging table.
When the operator inputs information about the panel size of the panel 16 and the installation position (installation range of the panel 16) on the imaging stand 14 to the operation input unit 24, which will be described later, the imaging control unit 22, which will be described later, includes the information Based on this, the first light source aperture 18a is controlled to irradiate illumination light having the same size as that of the panel 16 on the imaging table 14, as shown in FIG.
Further, as shown in FIG. 3, even when the subject P stands in front of the imaging table 14, the installation position of the panel 16 can be indicated by the first illumination light.

As shown in FIG. 4, the first light source diaphragm 18a includes a pair of light source diaphragm leaves 18aA (18aA ₁ , 18aA ₂ ) and a pair of light source diaphragm leaves 18aB (18aB ₁ , 18aB ₂ ). By changing the interval, an opening 18d having a desired size is created, and the first light source 18b is irradiated with a desired range on the imaging table 14. In FIG. 4, S indicates the position of the radiation source (here, the first light source 18b).
The set of light source diaphragm leaves 18aA and 18aB constituting the first light source diaphragm 18a may be any member as long as the first light source 18b blocks visible light, and various known members are used.
In addition, when one light source diaphragm leaf (for example, 18aA ₁ ) is moved a predetermined distance in one direction, the other light source diaphragm leaf (for example, 18aA ₂ ) of the pair of light source diaphragm leaves 18aA and 18aB is also moved. A leaf drive mechanism (not shown) that is moved equidistantly in the opposite direction is provided.
The first light source stop 18a is not limited to the structure shown in FIG. 4, and various known light source stops can be used.

The first light source 18b may be a light source that emits visible light as the first illumination light. For example, a normal white light source (incandescent light bulb, white LED, etc.), as well as colored light that emits light of a predetermined wavelength, for example. In addition, a filter that allows light in a predetermined wavelength band to pass along the white light source may be provided to change the color of the illumination light. The light from the first light source 18b is reflected by the half mirror 18c and directed toward the first light source aperture 18a (that is, the direction of the imaging table 14).
The half mirror 18c is a half mirror that reflects the light from the front surface and transmits the light from the back surface with the surface in the direction of the imaging table 14 as the front surface and the surface in the direction of the radiation source 12 as the back surface.

Similar to the first light source unit 18, the second light source unit 20 that irradiates the second illumination light includes a second light source aperture 20a that narrows the irradiation field of the irradiation light, and a second light source unit 20 that irradiates the illumination light that is visible light. 2 light sources 20b and a half mirror 20c that reflects the illumination light from the second light sources 20b in the direction of the imaging platform.
When information related to radiation exposure is input to the operation input unit 24 described later, the imaging control unit 22 described later controls the second light source aperture 20a based on the information, as shown in FIG. Further, illumination light having the same size as the radiation exposure range is irradiated onto the imaging table 14.
Similarly, as shown in FIG. 3, even if the subject P stands in front of the imaging table 14, the radiation exposure range can be indicated by the second illumination light.

  Unlike the first light source stop 18a, the second light source stop 20a also functions as the light source stop of the radiation source 12 as described above, and therefore needs to be made of a material containing lead or the like that blocks radiation.

FIG. 5 is an excerpt showing the configuration of the second light source unit 20 and the radiation source 12 in the radiation imaging apparatus 10 of the present invention. As shown in FIG. 5, the distance L _x from the radiation source 12 to the half mirror 20c and the distance L _l from the second light source 20b to the half mirror 20c need to be the same. If the radiation source 12 and the second light source 20b are not optically equal to the half mirror 20c, the size of each irradiation field (as the second irradiation light and radiation move away from the half mirror 20c) ( This is because the size of the luminous flux is shifted.

The imaging control unit 22 controls the first light source unit 18, the second light source unit 20, and the radiation source 12 according to instructions from an operation input unit 24 described later. Based on the size and installation position of the panel 16 input to the operation input unit 24, as described above, the first light source diaphragm 18a is controlled to change the shape of the opening 18d, and an instruction from the operation input unit 24 is provided. Thus, the first illumination light is emitted from the first light source 18b.
Further, the imaging control unit 22 changes the shape of the opening 20d by controlling the second light source diaphragm 20a as described above based on the radiation exposure conditions input to the operation input unit 24, and also operates the operation. In response to an instruction from the input unit 24, the second light source unit 20b emits the second illumination light, and the radiation source 12 emits radiation as necessary.
Here, the exposure conditions are the imaging region, the body thickness of the subject P, the SID (distance between the radiation source 12 and the radiation detector 16), the radiation intensity, and the exposure input from the operation input unit 24. This is a condition of radiation exposure including time.

Of course, the opening 18d of the first light source stop 18a is set larger in the opening 18d of the first light source stop 18a and the opening 20d of the second light source stop 20a. This is because the radiation exposure range does not need to be larger than that of the panel 16.
In this case, as shown in FIGS. 2 and 3, since the radiation exposure range is included in the panel installation range, the radiation exposed from the radiation source 12 passes through the opening 18d of the first light source diaphragm 18a. Pass through and irradiate the subject P.

  In addition, a filter or the like may be installed so that the first illumination light from the first light source 18b and the second illumination light from the second light source 20b are different in color of the illumination light. By changing the color of the first illumination light and the second illumination light, the first illumination light and the second illumination light are simultaneously irradiated as shown in FIGS. The size and installation position and the radiation exposure range can be confirmed simultaneously.

  Further, the first illumination light from the first light source 18b and the second illumination light from the second light source 20b may be set to have different irradiation intensities. For example, if the irradiation intensity of the first illumination light is low and the irradiation intensity of the second illumination light is high, the irradiation range of the second illumination light is brightly illuminated when simultaneously irradiated, and the first illumination light By illuminating the irradiation range darker than that, the size and installation position of the panel 16 and the radiation exposure range can be confirmed simultaneously.

  Further, when the radiation exposure range is out of the installation range of the panel 16, the imaging control unit 22 may include warning means for warning that effect. As the warning by the warning means, for example, the fact may be displayed on a display means (for example, a monitor) (not shown) of the imaging control section 22, or a radiation exposure instruction from the operation input section 24 described later. Nevertheless, the radiation exposure itself from the radiation source 12 may be stopped.

  The photographing control unit 22 is specifically configured by a computer including a CPU (central processing unit), a RAM (main storage device), a hard disk, and the like. In practice, the imaging control unit 22 is in accordance with an instruction from the operation input unit 24. The above-described CPU (central processing unit), RAM (main storage device), hard disk, and the like work together to control the first light source unit 18, the second light source unit 20, and the radiation source 12.

The operation input unit 24 inputs the panel size (six-cut, four-cut, large-angle, half-cut, etc.) and panel installation position ((top, center, bottom) x (left, center, right), etc.) Instructions such as irradiation of the first illumination light from the first light source 18b, irradiation of the second illumination light from the second light source 20b, and exposure of the radiation from the radiation source 12 are input.
The operation input unit 26 may specifically include an input device such as a keyboard and a mouse, or a reading device such as an IC card reader or a barcode reader.

In addition, regarding the irradiation of the illumination light from the first light source 18b and the second light source 20b and the exposure of the radiation from the radiation source 12, each operation input unit 24 has an individual switch (first illumination light is supplied). A first switch for irradiating, a second switch for irradiating the second illumination light, and a third switch for irradiating X-rays), and the first illumination light and the second illumination. A switch (fourth switch) that alternately emits light may be provided.
In contrast to the above example, the second switch may irradiate the first illumination light, and the first switch may irradiate the second illumination light.

Further, as shown in FIG. 6, a single three-stage switch 24a is installed in the operation input unit 24, the first stage is irradiated with the first illumination light (the installation range of the panel 16), and the second stage. The irradiation of the illumination light and the exposure of the radiation may be advanced step by step with the eye being irradiated with the second illumination light (radiation exposure range) and the third stage being the radiation exposure. In the above-described three-stage switch 24a, the first stage may be irradiated with the second illumination light, and the second stage may be irradiated with the first illumination light.
In addition, when the three-stage switch 24 is stopped for a predetermined time in the first stage or the second stage, or in a place not corresponding to any of the first stage, the second stage, and the third stage. When it is stopped for a predetermined time, the first illumination light and the second illumination light may be alternately irradiated at a predetermined interval.

  The above is the configuration of the embodiment of the radiation imaging apparatus 10 of the present invention shown in FIG. The above-described configuration is an example, and each configuration is not limited to the above-described example, and other various known techniques can be used.

<Operation of radiation imaging apparatus>
Next, the operation when performing radiography in the radiographic apparatus 10 of the present invention will be described.

An engineer who is an operator uses an IP cassette having a predetermined panel size (for example, four-cut size) as a radiation detector (panel) 16 according to the imaging region of the subject P, and determines a predetermined position (for example, FIG. In FIG. 2 and FIG.
Then, the operator inputs the panel size (four-cut size) and the installation position (right center) of the installed panel 16 to the imaging control unit 22 through the operation input unit 24.

The imaging control unit 22 controls the first light source aperture 18a of the first light source unit 18 based on the panel size and installation position of the panel 16 input by the operation input unit 24, and the first light source 18b When the first illumination light is irradiated, the size of the opening 18d is adjusted so as to irradiate the installation range of the radiation detector 16 on the imaging table 14.
Similarly, the second light source unit 20 controls the second light source diaphragm 20a so that the second illumination light from the second light source 20b and the radiation from the radiation source 12 are within a predetermined range on the imaging table 14. The size of the opening 20d is adjusted so as to be irradiated.

  As described above, after inputting the panel size and the installation position by the operation input unit 24, the operator stands the subject P in front of the photographing stand and holds a predetermined posture at the time of photographing.

  After placing the subject P in front of the photographing stand, the operator presses the switch 24a of the operation input unit 24 to the first stage, irradiates the first illumination light from the first light source 18b, The panel size and installation position of the panel 16 on the imaging table 14 are confirmed.

Next, the operator pushes the switch 24a to the second stage, and further irradiates the second illumination light from the second light source 20b, so that the installation range (first illumination) of the panel 16 on the photographing table described above is obtained. The radiation exposure range (second illumination light irradiation range) is confirmed from above the subject P.
Here, if the color of the first illumination light is different from the color of the second illumination light, the installation range of the panel 16 and the radiation exposure range (irradiation field) are irradiated and overlapped at a glance. Since it can be determined, the color of the first illumination light and the color of the second illumination light are preferably different.
Further, as described above, the irradiation intensity of the first illumination light and the second illumination light may be different. For example, when the irradiation intensity of the first illumination light is lower than the irradiation intensity of the second illumination light, the installation range of the panel 16 and the radiation exposure range can be determined at a glance as in the case where the colors are different. can do.
Further, as described above, the first illumination light and the second illumination light may be alternately blinked (that is, irradiated). As described above, the installation range of the panel 16 and the radiation exposure range can be determined at a glance.

Finally, the operator visually confirms the installation range of the panel 16 and the radiation exposure range, and pushes the switch 24a to the third stage to expose the radiation.
Note that the radiation intensity and the exposure time of the radiation source 12 are input in advance to the operation input unit 24 in accordance with the imaging region and the exposure range.

  In the case where the imaging control unit 22 is provided with a warning means, and radiation irradiation is out of the panel installation position, a warning to that effect is displayed on a display unit (not shown) of the imaging control unit 22, and The radiation exposure is stopped, and no radiation is exposed even if the switch 24a is pushed to the third stage.

After the radiation exposure, the operator can obtain a radiation image by taking out the IP cassette 16 from the imaging table 14 and reproducing it with a dedicated reproducing apparatus.
The above is the operation of the radiation imaging apparatus 10 of the present invention.

  The radiation imaging apparatus of the present invention has been described in detail above. However, the present invention is not limited to the above embodiment, and various improvements and modifications may be made without departing from the gist of the present invention. .

DESCRIPTION OF SYMBOLS 10 Radiography apparatus 12 Radiation source 13 Radiation source movement mechanism 14 Imaging stand 16 Radiation detector (panel)
18 1st light source part 18a 1st light source diaphragm 18aA, 18aB, 20aA, 20aB 1 set of light source diaphragm leaves 18b 1st light source 18c 1st half mirror 18d, 20d opening part 20 2nd light source part 20a 2nd Light source aperture 20b second light source 20c second half mirror 22 imaging control unit 24 operation input unit 24a three-stage switch

Claims (13)

An imaging stand in which a plurality of installation positions are determined in advance for each radiation detector size ,
An operation input unit for inputting the installation position indicating the size of the radiation detector installed on the imaging table and the installation range of the radiation detector on the imaging table ;
A first light source unit capable of irradiating the installation range of the radiation detector on the imaging table by a first illumination light based on the input installation range corresponding to the installation position of the radiation detector; ,
A second light source unit capable of irradiating a radiation exposure range on the imaging table with a second illumination light;
A radiation source that exposes the radiation;
An imaging control unit that controls irradiation and exposure from the first light source unit, the second light source unit, and the radiation source, respectively.
The first light source unit includes a first light source that irradiates the first illumination light, and a first light source diaphragm that adjusts the irradiation field,
In addition, the second light source unit includes a second light source that irradiates the second illumination light and a second light source diaphragm that adjusts the irradiation field.
The second light source diaphragm also functions as a light source diaphragm of the radiation source,
The adjustment of the openings of the first light source diaphragm and the second irradiation diaphragm, the irradiation from the first light source and the second light source, and the exposure from the radiation source are performed from the operation input unit. The radiation imaging apparatus is controlled by the imaging control unit according to an instruction.   The radiation imaging apparatus according to claim 1, wherein the second light source stop includes a lead component and blocks radiation. The first illuminating light from the first light source and the second illuminating light from the second light source are different in color, and are irradiated on the imaging table at the same time, based on the color difference. The radiation imaging apparatus according to claim 1, wherein the installation range corresponding to the installation position of the radiation detector and the radiation exposure range can be displayed simultaneously. The first illumination light from the first light source and the second illumination light from the second light source have different irradiation intensities, and the irradiation intensity is obtained by simultaneously irradiating the imaging table. The radiographic apparatus according to claim 1, wherein the installation range corresponding to the installation position of the radiation detector and the radiation exposure range can be displayed simultaneously based on the difference. The plurality of installation positions determined in advance for each size of the radiation detector on the imaging table are perpendicular to one size of the radiation detector (detector upper end, detector center, detector lower end). The radiation imaging apparatus according to claim 1, wherein there are a total of nine places in three ways, three in the horizontal direction (detector left end, detector center, detector right end). Further, the operation input unit irradiates the radiation range on the imaging table with a first switch that irradiates the installation range corresponding to the installation position of the radiation detector on the imaging table. The radiation imaging apparatus according to claim 1, further comprising: a second switch for performing radiation and a third switch for exposing the radiation. Further, the operation input unit includes a fourth switch that alternately irradiates the installation range corresponding to the installation position of the radiation detector and the exposure range of the radiation on the imaging table. The radiation imaging apparatus according to any one of claims 1 to 6. Furthermore, the operation input unit has a three-stage switch,
The three-stage switch irradiates the installation range corresponding to the installation position of the radiation detector on the imaging table in the first stage, and the radiation on the imaging table in the second stage. The radiation according to any one of claims 1 to 5, wherein the radiation range of the radiation is irradiated on the installation range of the detector, and the radiation is exposed in a third stage. Shooting device. Furthermore, the operation input unit has a three-stage switch,
The three-stage switch irradiates the exposure range of the radiation on the imaging table in the first stage, and the exposure range of the radiation on the imaging table in the second stage. The radiation according to any one of claims 1 to 5, wherein the radiation is irradiated on the installation range corresponding to the installation position of the radiation detector in a third stage. Shooting device. The three-stage switch is predetermined when stopped for a predetermined time in the first stage or the second stage, or at a place not corresponding to any of the first stage, the second stage, and the third stage. 9. When the time is stopped, the installation range corresponding to the installation position of the radiation detector and the exposure range of the radiation are alternately and repeatedly irradiated onto the imaging table. Or the radiography apparatus of 9.   The radiation beam emitted from the radiation source and passed through the second light source diaphragm is included in an opening of the first light source diaphragm. Radiography equipment.   Furthermore, when the irradiation range of the second illumination light from the second light source unit deviates from the irradiation range of the first illumination light from the first light source unit on the imaging table. The radiation imaging apparatus according to claim 1, further comprising a warning unit that issues a warning. When the warning is made,
The radiographic apparatus according to claim 12, wherein the warning unit stops exposure of the radiation from the radiation source through the imaging control unit.

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