CN100536780C - Radiography system and transfer plate moving device - Google Patents

Abstract

The present invention is intended to readily move a transfer board from a stretcher to a radiographic table and to efficiently achieve radiography. The transfer board moved from the stretcher is borne by an intermediate table. The transfer board borne by the intermediate table is moved to the radiographic table by an intermediate table mover, and then borne by the radiographic table.

Description

Radiography system and transfer plate moving device

technical field

The invention relates to a radiographic system and a transfer plate moving device. More particularly, the present invention relates to a radiographing system and a transfer plate moving device for moving a transfer plate included in a stretcher on which a subject lies to a radiographing table.

Background technique

Radiographic systems, including X-ray computed tomography (CT) systems, acquire raw data by scanning a subject lying in a radiographic space, and generate an image of the subject from the raw data.

For example, in an X-ray CT system, the X-ray tube and X-ray detector are combined within the scanner gantry so that they sandwich the radiographic space. The transport device transports the object carried by the radiographic table to the radiographic space. The X-ray tube radiates X-rays to the subject while rotating around the subject carried by the radiographic table within the radiographic space. The X-ray detector detects X-rays transmitted through an object to obtain raw data. Based on the obtained raw data, a tomographic image representing the plane of the subject is produced (see Patent Document 1).

[Patent Document 1] Japanese Unexamined Patent Application Publication No. 2004-173756

When a subject is radiographed with the X-ray CT system, the subject is transported from outside to a scanning room where the X-ray CT system is installed using a stretcher. The stretcher is, for example, a transport device comprising a transfer board on which a subject lies and a trolley that carries the transfer board so that the transfer board can be detached from the cart. When the object is loaded on the radiography table in the X-ray CT system, the transfer plate is moved to the radiography table after the transfer plate on which the object lies is detached from the cart.

Stretchers are specially used in emergency situations. Therefore, it is necessary to design the stretcher so that the transfer plate can be easily moved to the radiographing table for efficient radiographing.

In a radiographic system including an X-ray CT system, all components including a scanner gantry and a transport device should be accurately arranged at predetermined reference positions. The heavy assembly is moved and positioned so that one edge of the assembly aligns with a line drawn on the ground, eg with a laser, whereby the assembly is linearly and relative arranged in place.

In the work of arranging components, since adjustment is not easy, there is difficulty in improving work efficiency.

In particular, when maintenance is performed, for example to replace a slip ring incorporated in the scanner gantry of an X-ray CT system with a new one, the housing covering the interior of the scanner gantry must be removed. There is therefore a need to transfer components of the X-ray CT system. For this reason, the transferred components must be precisely aligned and arranged in place after the repair has been completed. Therefore there is difficulty in improving maintainability. Thus, a disadvantage of lowering work efficiency becomes apparent.

As mentioned above, there is a need to improve maintenance and installation work efficiency of radiography systems including X-ray CT systems while efficiently performing radiography.

Contents of the invention

Accordingly, an object of the present invention is to provide a radiographing system and a transfer plate moving device capable of improving maintenance and installation work efficiency and effectively performing radiographing.

In order to achieve the above objects, a radiographic system according to the present invention includes a radiographic table, a transfer plate on which a subject is laid is moved from a stretcher to the radiographic table and the radiographic table carries the transferred transfer plate, and a scanner , which scans an object lying on a transfer plate carried by a radiographic table to obtain raw data of the object. Radiographic systems produce images of objects based on raw data obtained with a scanner. The radiographic system further includes an intermediate table carrying the transfer board moved from the stretcher, and a transfer board mover that moves the transfer board carried by the intermediate table to the radiographing table so that the transfer board can be carried by the radiographing table.

In order to achieve the above object, a transfer board moving device according to the present invention moves a transfer board on which a subject is laid from a stretcher to a radiographing table. The transfer plate moving device includes an intermediate table carrying the transfer plate moved from the stretcher and a transfer plate mover. The transfer plate mover moves the transfer plate carried by the intermediate table to the radiographing table so that the transfer plate can be carried by the radiographing table.

In order to achieve the above objects, a transfer board moving device according to the present invention moves a transfer board on which a subject is laid from a stretcher to a radiographing table, wherein objects lying on the transferred transfer board are scanned with a scanner on the radiographing table. object. The transfer board moving device includes a transfer board moving device main body that moves the transfer board moved from the stretcher to the radiographing table, caster parts that carry the transfer board moving device main body, and a main body mover included in the transfer board moving device main body, which Move the transfer plate mover body vertically to the caster parts.

In order to achieve the above object, a radiographic system for radiographing an object according to the present invention includes a module, a caster part carrying the module, and a module mover included in the module and the module mover vertically moves the module to the caster part.

According to the present invention, there are provided a radiographing system and a transfer plate moving device capable of improving maintenance and installation work efficiency and effectively realizing radiographing.

Further objects and advantages of the invention will become apparent from the following description of preferred embodiments of the invention illustrated in the accompanying drawings.

Description of drawings

FIG. 1 is a block diagram illustrating the overall configuration of an X-ray CT system according to a first embodiment of the present invention.

FIG. 2 schematically illustrates the configuration of a main part of an X-ray CT system according to a first embodiment of the present invention.

Fig. 3 includes side views illustrating the scanner 2, the first transport device 4, and the second transport device 5 included in the first embodiment of the present invention.

Figure 4 illustrates a Y1-Y2 cross-section of the second transport device in Figure 3 and included in the first embodiment of the invention.

5 is a flowchart describing actions performed for scanning an object using the X-ray CT system according to the first embodiment of the present invention.

Figure 6 includes a side view illustrating the movement of the intermediate table 501 by the intermediate table mover 502 so that the radiographic table 401 can be stored in the intermediate table 501 according to the first embodiment of the present invention.

FIG. 7 includes side views illustrating the movement of the radiographic table 401 stored in the intermediate table 501 by the radiographic table horizontal shifter 402a according to the first embodiment of the present invention.

Figure 8 includes a side view illustrating the movement of the transfer plate 601 from the stretcher 6 to the intermediate table 501 according to the first embodiment of the present invention.

FIG. 9 includes side views illustrating the movement of the transfer plate 601 from the intermediate table 501 to the radiographic table 401 according to the first embodiment of the present invention.

Fig. 10 includes side views illustrating an X-ray CT system according to a second embodiment of the present invention.

FIG. 11 is a flowchart describing actions performed for mounting the second transport device 5 included in the second embodiment of the present invention.

12 is a part illustrating the states of the caster member 721, the transporter moving mechanism 722, the caster receiver 723, and the main body coupler 724 obtained when the second transporter 5 is moved to the reference position according to the second embodiment of the present invention. side view.

13 is a part illustrating the state of the caster member 721, the transporter moving mechanism 722, the caster receiver 723, and the main body coupler 724 obtained when the second transporter 5 is mounted to the reference position according to the second embodiment of the present invention. side view.

FIG. 14 is a flowchart describing actions performed when the second transport device 5 is transferred from the installation position according to the second embodiment of the present invention.

Detailed ways

Embodiments of the present invention are described below.

【The first embodiment】

FIG. 1 is a block diagram illustrating an overall configuration of an X-ray CT system 1 according to a first embodiment of the present invention. FIG. 2 illustrates the configuration of a main part of the X-ray CT system 1 according to the first embodiment of the present invention.

As shown in FIG. 1 , an X-ray CT system 1 includes a scanner gantry 2 , an operation console 3 , a first transport device 4 , and a second transport device 5 .

The scanner gantry 2 will be described below.

The scanner gantry 2 scans the object transported to the radiographing space 29 with X-rays in accordance with the control signal CTL30a sent from the operation console 3, and obtains projection data items of the object as raw data. The scanner gantry 2 includes, as shown in Figure 1, an X-ray tube 20, an X-ray tube mover 21, a collimator 22, an X-ray detector 23, a data acquisition unit 24, an X-ray controller 25, a collimator A controller 26 , a rotator 27 , and a stage controller 28 . Inside the scanner gantry 2, as shown in FIG. 3, an X-ray tube 20 and an X-ray detector 23 are arranged to sandwich a radiographing space 29 into which a subject is transported. A collimator 22 is arranged to shape the X-rays emitted from the X-ray tube 20 to a subject lying within the radiographic space 29 . The scanner gantry 2 rotates the X-ray tube 20, the collimator 22, and the X-ray detector 23 around the object centering on the body axis direction z of the object. Meanwhile, the X-ray tube 20 emits X-rays, and the X-ray detector 23 detects the X-rays transmitted through the subject to generate projection data items. According to an embodiment of the present invention, the scanner gantry 2 scans a subject lying on a transfer plate moved from a stretcher within a radiographic space, and obtains projected data items of the subject as raw data. The components of the scanner gantry 2 will be described sequentially.

The X-ray tube 20 is, for example, of a rotating anode type and emits X-rays to a subject. As shown in FIG. 2 , the X-ray tube 20 emits X-rays of a predetermined intensity according to a control signal CTL251 sent from the X-ray controller 25 . X-rays emitted from the X-ray tube 20 are, for example, conically shaped by a collimator 22 and emitted to a subject lying in a radiographing space 29 . Thereafter, the X-rays transmitted through the object are detected by the X-ray detector 23 . Here, the X-ray tube 20 is rotated around the subject by means of a rotator 27 centering on the subject's body axis direction z so that the X-rays are emitted to the subject in a plurality of viewing directions around the subject. In short, the X-ray tube 20 rotates around the subject with an axis extending in the horizontal direction in which the first transport device 4 transports the subject to the radiographing space 29 as the center of rotation.

As shown in FIG. 2 , the X-ray tube mover 21 moves the X-ray tube in the body axis direction z of the subject lying in the radiographing space 29 in the scanner gantry 2 according to the control signal CTL 252 sent from the X-ray controller 25. The launch center within the tube 20.

As shown in FIG. 2 , a collimator 22 is placed between the X-ray tube 20 and the X-ray detector 23 . The collimator 22, for example, has two shielding plates opaque to X-rays arranged in each of the direction i of the channel and the direction j of the array. The collimator 22 moves the two shielding plates arranged in each direction according to the control signal CTL261 sent from the collimator controller 26 independently of the other two shielding plates. In this way, the collimator 22 shields X-rays emitted from the X-ray tube 20 in each direction to shape the X-rays into a cone and adjust the range of X-rays. In other words, the collimator 22 changes the size of the opening through which the X-rays emitted from the X-ray tube 20 pass so as to adjust the range of X-emission.

The X-ray detector 23 detects X-rays emitted from the X-ray tube 20 and transmitted through the subject to generate projection data items of the subject. The x-ray detector 23 is rotated around the object together with the x-ray tube 20 by means of a rotator 27 . The X-ray detector 23 detects X-rays emitted from the X-ray tube 20 surrounding the subject and transmitted through the subject to generate projection data items.

As shown in FIG. 2, the X-ray detector 23 includes a plurality of detector elements 23a. The X-ray detector 23 has detector elements 23a arranged two-dimensionally in the direction i of the channel corresponding to the rotation x of the rotator 27 about the object lying in the radiographic space 29 and in the direction j of the array. The direction of rotation of the X-ray tube 20 , the direction j of the array corresponds to the direction of the rotation axis, which serves as the central axis around which the rotator 27 rotates the X-ray tube 20 . For example, the X-ray detector 23 has about 1000 detector elements 23a arranged in the channel direction i and about 32 to 64 detector elements 23 arranged in the array direction j. Also, the X-ray detector 23 has a cylindrical concave surface formed of a plurality of two-dimensionally arranged detector elements 23a.

The X-ray detector 23 constituted by the detector elements 23a is, for example, a solid-state detector, and each detector element includes a scintillator (not shown) that converts X-rays into light and converts light generated by the scintillator into electrical charges. photodiode (not shown). The detector element 23a may be implemented with a cadmium telluride (CdTe) semiconductor detector element or a xenon (Xe) ion chamber type detector element.

The data collection unit 24 is used to collect projection data items generated by the X-ray detector 23 . The data acquisition unit 24 acquires projection data generated by detecting X-rays by each detector element 23 a constituting the X-ray detector 23 , and transmits the projection data to the operation console 3 . As shown in FIG. 2 , the data acquisition unit 24 includes a selection/addition switch circuit (MUX, ADD) 241 and an analog-to-digital converter (ADC) 242 . The selection/addition switch circuit 241 selects an arbitrary projection data item generated by each detector element 23a included in the X-ray detector 23 according to the control signal CTL303 sent from the central processing unit 30, or changes and sums a set of projection data items and The summed result is sent to the analog-to-digital converter 242 . The analog-to-digital converter 242 converts the selected projection data or the summation result of the projection data from an analog form to a digital form, and transmits the digitized data to the central processing unit 30 .

As shown in FIG. 2, the X-ray controller 25 transmits a control signal CTL251 to the X-ray tube 20 according to a control signal CTL301 transmitted from the central processing unit 30, and thus controls X-ray emission. The X-ray controller 25 controls, for example, the tube current of the X-ray tube 20 or its emission time. Also, the X-ray controller 25 transmits the control signal CTL252 to the X-ray tube mover 221 according to the control signal CTL301 transmitted from the central processing unit 30, and thus controls the X-ray tube 20 so that the emission center inside the X-ray tube 20 is at the body axis. Move in direction z.

As shown in FIG. 2, the collimator controller 26 transmits a control signal CTL261 to the collimator 22 according to the control signal CTL302 sent from the central processing unit 30, and thus controls the collimator 22 so that the collimator 22 shapes the X-ray Tube 20 emits X-rays to the subject.

As shown in FIG. 1, a rotator 27 is shaped like a cylinder and has a radiographic space 29 accommodating a subject formed at its center. The rotator 27 drives, for example, a motor in accordance with a control signal CTL28 sent from the gantry controller 28 so as to rotate around the subject centering on the body axis direction z of the subject lying in the radiographing space 29 . Rotator 27 includes and carries X-ray tube 20 , X-ray tube mover 21 , collimator 22 , X-ray detector 23 , data acquisition unit 24 , X-ray controller 25 , and collimator controller 26 . The spinner 27 provides electrical power to the above-mentioned components through a slip ring (not shown). Also, the rotator 27 rotates the assembly around the object, and changes the positional relationship of the assembly with the object carried into the radiographing space 29 in the direction of rotation.

As shown in FIGS. 1 and 2, the stage controller 28 transmits a control signal CTL28 to the rotator 27 according to a control signal CTL304 sent from the central processing unit 30 included in the operation console 3, and thus controls the rotator 27 so that The spinner 27 rotates on its own.

The operation console 3 will be described below.

As shown in FIG. 1 , the operation console 3 includes a central processing unit 30 , an input device 31 , a display device 32 , and a storage device 33 . The above components will be described sequentially.

The central processing unit 30 included in the operation console 3 executes various processes in response to commands input by the operator at the input device 31 . The central processing unit 30 includes a computer and programs so that the computer can be used for various methods, and further includes, as shown in FIG. 1 , a control unit 301 and an image generation unit 302 .

The control unit 301 included in the central processing unit 30 controls components to emit X-rays from the X-ray tube 20 to the subject and detect the X-rays transmitted through the subject by the X-ray detector 23 according to the conditions of scanning the subject. Specifically, the control unit 301 transmits a control signal CTL30a to components in order to perform scanning according to scanning conditions. For example, the control unit 301 transmits a control signal CTL30b to the subject transport device 4 so that the subject transport device 4 transports the subject into or out of the radiographic space 29 . Also, the control unit 301 transmits a control signal CTL304 to the gantry controller 28 to rotate the rotator 27 included in the scanner gantry 2 . Also, the control unit 301 transmits a control signal CTL301 to the X-ray controller 25 so as to emit X-rays from the X-ray tube 20 . The control unit 301 sends a control signal CTL302 to the collimator controller 26 to control the collimator 22 to shape the X-ray. Also, the control unit 42 transmits a control signal CTL303 to the data acquisition unit 24 and thus controls the data acquisition unit 24 so that the data acquisition unit 24 acquires projection data generated by each detector unit 23 a included in the X-ray detector 23 .

The image generating unit 302 included in the central processing unit 30 generates a tomographic image of the object from the projection data items acquired by the scanner gantry 2 . The image generation unit 302 performs preprocessing including sensitivity correction and beam hardening compensation on projection data items generated based on X-rays emitted in a plurality of view directions during helical scanning, and reconstructs a tomographic image representing the object plane according to a filtered back projection technique.

The input device 31 is realized by, for example, a keyboard and a mouse. The input device 31 transmits various information including scanning parameters and patient data and various commands to the central processing unit 30 according to the operator's operation. For example, when scanning conditions are set, the input device 31 transmits the scan start position, scan end position, scan pitch, X-ray beam width, tube current, and slice thickness in scan parameters in response to commands input by the operator.

The display device 32 includes, for example, a CRT and displays images on its display surface in response to commands sent from the central processing unit 30 . For example, the tomographic image generated by the image generating unit 302 is displayed on the display surface of the display device 32 .

The storage device 33 included in the operation console 3 is implemented with a memory. Various data items are stored in the storage device 33 . The central processing unit accesses the data items stored in the storage device 33 whenever necessary.

The first transport device 4 and the second transport device 5 are described below.

Fig. 3 includes side views illustrating the scanner 2, the first transport device 4, and the second transport device 5 included in the X-ray CT system 1 of the first embodiment of the present invention. FIG. 4 is a cross-sectional view of the second conveying device 5 included in the first embodiment of the present invention, and illustrates a Y1-Y2 cross-section of the second conveying device in FIG. 3 .

As shown in FIG. 3 , the first transport device 4 includes a radiographic table 401 and a radiographic table mover 402 . The transfer board 601 on which the subject lies is moved from the stretcher 6 to the first conveying device 4 by the second conveying device 5 . The first transport device 4 carries the moved transfer plate 601 and moves the carried transfer plate 601 to the radiographing space 29 inside the scanner gantry 2 . The components of the first transport device 4 will be described below.

As shown in FIG. 3 , the radiographic table 401 included in the first transport device 5 is a table having therein a placement surface F1 extending in the horizontal direction H, and is carried by a radiographic table mover 402 . The radiographic table 401 is moved in one of the horizontal directions H by the radiographic table mover 402 so that it can protrude into the radiographic space 29 . The transfer plate 601 on which the subject lies is moved from the stretcher 6 to the placement surface F1 of the radiographing table 401 through the second conveyance device 5 outside the radiographing space 29 as described later in detail. The radiographic table 401 carries a transfer plate 601 moved onto its placement surface F1. For example, the transfer plate 601 on which the subject lies supine is moved to the radiographing table 401 .

As shown in FIG. 3, the radiographic table mover 402 included in the first transport device 5 includes a radiographic table horizontal mover 402a and a radiographic table vertical mover 402b. The radiographic table mover 402 makes the radiographic table horizontal mover 402 a and the radiographic table vertical mover 402 b based on the control of the control signal CTL30 b sent from the central processing unit 30 , and thus moves the radiographic table 401 .

Now, as shown in FIG. 3 , the radiographic table horizontal mover 402 a carries the radiographic table 401 and moves the radiographic table 401 in the horizontal direction H. As shown in FIG. For example, the radiographic table horizontal mover 402 a drives a motor (not shown) to move the radiographic table 401 in the body axis direction z of a subject lying on the radiographic table 401 . According to an embodiment of the present invention, as shown in FIG. 3 , the intermediate table 501 is included in the second conveying device 5 so that the intermediate table 501 can move horizontally along the radiographic table with the radiographic space between them with the radiographic table 401 The device 402a is placed opposite to one of the horizontal directions H in which the radiographic table 401 is moved. The radiographing table horizontal mover 402 a moves the radiographing table 401 in one of the horizontal directions H so that the radiographing table 401 can pass through the radiographing space 29 toward the second transport device 5 . Thus, the radiographic table 401 is stored in the storage space S1 in the intermediate table 501 as shown in FIG. 4 . The transfer plate 601 carried by the intermediate table 501 and the radiographic table 401 stored in the storage space S1 of the intermediate table 501 are moved so as to approach each other. After the transfer plate 601 is carried by the radiographic table 401 , the radiographic table horizontal mover 402 a moves the radiographic table 401 carrying the transfer plate 601 to the radiographic space 29 along another horizontal direction H.

Also, the radiographic table vertical mover 402b carries the radiographic table horizontal mover 402a as shown in FIG. 3, and moves the radiographic table 401 in the vertical direction V perpendicular to the horizontal plane. The radiographic table vertical mover 402b drives a hydraulic actuator (not shown) to move the radiographic table 401 in the vertical direction V, for example.

On the other hand, the second transport device 5 includes an intermediate table 501 , an intermediate table mover 502 , and a stretcher coupler 503 as shown in FIG. 3 . The transfer board 601 on which the subject lies is moved from the stretcher 6 to the second transport device 5 . The second transport device 5 carries the moved transfer plate 601 and moves the carried transfer plate 601 to the radiographing table 401 included in the first transport device 4 .

The components of the second transport device 5 will be described below.

As shown in FIG. 3 , the radiographic table 401 and the intermediate table 501 included in the second conveying device 5 have the radiographic space 29 of the scanner gantry 2 interposed between them along the radiographic table horizontal mover 402 a. The axial directions z are placed oppositely, wherein the body axis direction z corresponds to one of the horizontal directions H in which the radiographic table horizontal mover 402a moves the radiographic table 401 . Also, as shown in FIG. 3, the intermediate table 501 includes an intermediate table main body 501a and a roller 501b. As shown in FIG. 4, the intermediate table 501 carries the transfer plate 601 moved from the stretcher 6, and has the radiographic table 401 stored in the storage space S1 therein. The transfer plate 601 is moved from the stretcher 6 to the intermediate table 501 in a direction opposite to the body axis direction z corresponding to one of the horizontal directions H in which the radiographic table horizontal mover 402a moves the radiographic table 401 direction.

Now, as shown in FIG. 3 , the intermediate table main body 501 a is a table extending in the horizontal direction H and carried by the intermediate table mover 502 . As shown in FIG. 4, the intermediate table main body 501a has a storage space S1 formed therein, and has a roller 501b disposed inside. More specifically, the intermediate table main body 501a has rollers 501b arranged on its inner wall facing the storage space S1 so that the rollers 501b can carry the moving from the stretcher 6 at the first position V1 in one of the vertical directions V transfer plate. Also, the intermediate table main body 501a has a storage space S1 formed at a second position V2 which is lower in the vertical direction V than the first position V1 of the load transfer plate 601 . When detached from the transfer plate 601 carried at the first position V1, the radiographic table 401 is stored in the storage space S1.

Also, the roller 501b is arranged near the opening of the storage space S1 formed in the intermediate table main body 501a so that it can carry the transfer plate 601 moved from the stretcher 6 over the second position V2 in the vertical direction V, where The radiographic table 401 at the second position V2 is stored in the storage space S1. The roller 501b is arranged on the inner wall of the intermediate table body facing the storage space S1 so that it can contact both ends of the transfer plate 601 moving from the stretcher 6 in the direction opposite to the body axis direction z. The rollers 501b carry the transfer plate 601 so as to enable the transfer plate 601 to move in a direction opposite to the body axis direction z. As shown in FIG. 3, a plurality of rollers 501b are arranged in the body axis direction z corresponding to one of the horizontal directions H and the radiographic table horizontal mover 402b moves the radiographic table 401 to the middle work in this direction. The storage space S1 in the table main body 501a.

As shown in FIG. 3 , the intermediate table mover 502 included in the second transport device 5 carries the intermediate table 501 and moves the intermediate table 501 in the vertical direction V and the horizontal direction H in the same manner. The intermediate table mover 502 has two parallel links constituted by connecting members whose ends are fixed to the rotation shaft and are parallel to each other. The parallel links carry the intermediate table 501 . The intermediate table mover 502 changes the angle at which the direction in which the parallel links extend intersects a horizontal direction H by moving the parallel links centered on the rotation axis using a hydraulic actuator (not shown). Therefore, the intermediate table mover 502 moves the intermediate table 501 in the vertical direction V and the horizontal direction H in the same manner. For example, a foot switch (not shown) is used to actuate the hydraulic actuator. The intermediate table mover 502 thus moves the intermediate table 501 in the vertical direction V and the horizontal direction H, whereby the transfer plate 601 carried by the intermediate table 502 and the radiographic table stored in the storage space S of the intermediate table 502 401s close to each other. The transfer plate 601 is moved to and carried by the radiographing table 501 . In other words, the intermediate table mover 502 moves the intermediate table 501 from the first position V1 to the second position V2 in the vertical direction V, thereby moving the transfer plate carried by the intermediate table 501 at the first position V1 to the storage place. The radiographic table 601 in the storage space S1 is carried by the radiographic table 601 .

The stretcher coupler 503 is coupled and fixed to the stretcher 6 . In the embodiment of the present invention, the stretcher coupler 503 is coupled and fixed to the trolley 602 of the stretcher 6 . For example, the stretcher coupler 503 is coupled and secured to the cart 602 with chains and hooks that lock the chains. Also, the stretcher coupler 503 has a support surface that supports the transfer plate 601 moved from the stretcher 6 and is flush with the surface of the stretcher 6 on which the transfer plate 601 is placed.

The actions performed in the CT system 1 according to the embodiment of the present invention are described below.

FIG. 5 is a flowchart describing actions performed for scanning an object using the X-ray CT system 1 according to the first embodiment of the present invention.

As shown in FIG. 5, first, the intermediate table 501 is moved so that the radiographic table 401 can be stored in the intermediate table 501 (S11).

Here, the intermediate table mover 502 moves the intermediate table 501 .

Figure 6 includes a side view illustrating the movement of the intermediate table 501 by the intermediate table mover 502 so that the radiographic table 401 can be stored in the intermediate table 501 according to the first embodiment of the present invention.

As shown in FIG. 6 , the intermediate table mover 502 moves the parallel links around the rotation axis so as to change the angle at which the extending direction of the parallel links intersects with a horizontal direction H. Accordingly, the intermediate table 501 is moved in the vertical direction V and the horizontal direction H. The heights of the radiographic table 501 and the intermediate table 501 in the vertical direction V are adjusted so that the radiographic table 501 can be stored in the intermediate table 501 .

Next, as shown in FIG. 5, the radiographic table 401 is stored in the intermediate table 501 (S21).

Here, the radiographic table horizontal shifter 402 a moves the radiographic table 401 so that the radiographic table 401 can be stored in the intermediate table 501 .

Fig. 7 includes side views illustrating the movement and storage of the radiographing table 401 by the radiographing table horizontal shifter 402a included in the first embodiment of the present invention for the radiographing table.

As shown in FIG. 7 , the radiographing table horizontal mover 402 a moves the radiographing table 401 in the horizontal direction H so that the radiographing table 401 can pass through the radiographing space 29 toward the second transport device 5 . Here, the extender 401a is fixed to the end of the radiographing table 401 with the placement surface F1 extending therewith, and the radiographing table 401 is moved in the horizontal direction H. As shown in FIG. Thus, as shown in FIG. 4 , the radiographic table 401 is stored in the storage space S1 of the intermediate table 501 . Here, the radiographic table 401 is stored in the storage space S1 below the first position V1 in the intermediate table 501 so that the radiographic table 401 can be separated from the transfer plate 601 carried at the first position V1.

Thereafter, as shown in FIG. 5, the stretcher 6 is coupled to the stretcher coupler 503 (S31).

The operator transports the stretcher 6 with the transfer plate 601 loaded with objects therein from the outside and couples and fixes the stretcher 6 to the stretcher coupler 503 .

Thereafter, as shown in FIG. 5, the transfer board 601 on which the subject lies is moved from the stretcher 6 to the intermediate table 501 (S41).

Here, the operator unloads the transfer board 601 on which the subject lies from the trolley 602 of the stretcher 6 and moves the transfer board 601 to the intermediate table 501 .

Figure 8 includes a side view illustrating the movement of the transfer plate 601 from the stretcher 6 to the intermediate table 501 according to the first embodiment of the present invention.

As shown in FIG. 8 , the transfer plate 601 on which the subject lies is slid from the stretcher 6 to the intermediate table 501 through the stretcher coupler 503 . Specifically, the operator slides the transfer plate 601 on the plurality of rollers 501b in the horizontal direction H in which the plurality of rollers 501b are arranged within the intermediate table 501 . Here, as shown in FIG. 4 , the transfer plate 601 is slid so that the transfer plate 601 can be opposed to the placement surface F1 of the radiographing table 401 stored in the storage space S1 of the intermediate table 501 . The transfer plate 601 is carried by rollers 501 b included in the intermediate table 501 .

Thereafter, as shown in FIG. 5, the transfer plate 601 is moved from the intermediate table 501 to the radiographing table 401 (S51).

Here, the intermediate table mover 502 moves the intermediate table 501 , whereby the transfer plate is moved to and carried by the radiographing table 601 .

FIG. 9 includes a side view illustrating the movement of the transfer plate 601 from the intermediate table 501 to the radiographic table 401 included in the first embodiment of the present invention.

As shown in FIG. 9 , the intermediate table mover 502 moves the intermediate table 501 downward along the vertical direction V, so that the transfer plate 601 carried by the intermediate table 501 and the rays stored in the storage space S of the intermediate table 502 The camera stations 401 are close to each other. Thereby, the transfer plate 601 is moved to and carried by the radiographing table 401 .

Specifically, as shown in FIG. 4 , the intermediate table mover 502 moves the intermediate table 501 from the first position V1 to the second position V2 in the vertical direction V. Accordingly, the transfer plate carried by the intermediate table 501 at the first position V1 is moved to the radiographic table 601 stored in the storage space S1 at the second position V2 and carried by the radiographic table vertical mover 402b. The transfer plate 601 carried by the rollers 501 b included in the intermediate table 501 is brought into contact with the placement surface F1 of the radiographing table 401 and is then carried by the radiographing table 401 .

Thereafter, as shown in FIG. 5 , the radiographing table 401 carrying the transfer plate 601 is moved to the radiographing space 29 ( S61 ).

Here, the radiographic table 401 carrying the transfer plate 601 is moved in the horizontal direction H toward the radiographic space 29 by means of the radiographic table horizontal shifter 402a.

Thereafter, as shown in FIG. 5 , the object lying on the transfer plate 601 carried by the radiographic table 401 is scanned ( S71 ).

Here, the scanner gantry 2 scans the object moved to the radiographing space 29 with X-rays to obtain projection data items of the object as raw data. For example, the scanner gantry 2 scans the object according to a helical scanning technique in order to obtain projection data items.

Thereafter, as shown in FIG. 5, a tomographic image of the subject is generated (S81).

Based on the projection data items acquired by the scanner gantry 2, the image generating unit 302 generates a tomographic image representing the object plane. Specifically, the image generating unit 302 performs preprocessing including sensitivity correction and beam hardening compensation on the acquired projection data items, and then reconstructs a tomographic image representing the object plane according to the filtered back projection technique.

Thereafter, as shown in FIG. 5, a tomographic image of the object is displayed (S91).

Here, the tomographic image generated by the image generating unit 302 is displayed on the display surface of the display device 32 .

As described above, according to the embodiment of the present invention, the intermediate table 501 carries the transfer plate 601 moved from the stretcher 6, and the intermediate table mover 502 moves the transfer plate 601 carried by the intermediate table 501 to the radiographing table 401 so as to intermediate The table 501 can be carried by the radiographic table 401 . Here, the transfer board 601 moved from the stretcher 6 is carried by the intermediate table 501 at the first position V1 in the vertical direction V. The radiographing table 401 is stored in the storage space S1 of the intermediate table 501, which is formed at a second position V2 lower than the first position V1 in the vertical direction V, so that the radiographic table 401 can be carried downward and on the The transfer plate 601 at the first position V1 is separated. The intermediate table mover 502 moves the transfer plate 601 carried by the intermediate table 501 to the radiographing table 401 so that the transfer plate 601 can be carried by the radiographic table 401 . Here, the intermediate table mover 502 moves the intermediate table 501 from the first position V1 to the second position V2 in the vertical direction V so that the transfer plate 601 carried by the intermediate table 501 at the first position V1 and the transfer plate 601 stored at the second position V1 are moved. The radiographic tables 501 in the storage space S1 of the intermediate table 501 at the two positions V2 can be close to each other. Thus, the transfer plate 601 is carried by the radiographic table 401 . According to the embodiment of the present invention, the transfer plate 601 can be easily moved from the stretcher 6 to the radiographing table 401, and radiographing can be effectively performed. Also, embodiments of the present invention can prevent impacts such as vibrations from being applied to objects during movement. Furthermore, the embodiment of the present invention contributes to simple construction and reduced cost by limiting the adverse effects of deformation of the radiographic table 401 .

According to the embodiment of the present invention, the intermediate table 501 is installed so that it can move the radiographic table 401 in one of the horizontal directions H of the radiographic table 401 along the radiographic table horizontal shifter 402b with the radiographic space 29 interposed therebetween. relatively placed. The radiographing table horizontal mover 402 b moves the radiographing table 401 in the horizontal direction H via the radiographing space 29 , and thus stores the radiographing table 401 in the storage space S1 of the intermediate table 501 . Therefore, according to the embodiment of the present invention, a simple construction is realized on the basis of a general-purpose system. Rapid movement of the transfer plate 601 from the stretcher 6 to the radiographing table 401 can be realized at low cost.

Also, according to an embodiment of the present invention, a roller 501 b carrying the transfer plate 601 moved from the stretcher 6 so that the transfer plate can move in the horizontal direction H is included in the intermediate table 501 . Here, a plurality of rollers 501b are arranged in a direction in which the radiographic table 401 is moved to the storage space S1 of the intermediate table 501 by the radiographic table horizontal shifter 402b. Thus, according to the embodiment of the present invention, the transfer plate 601 can be easily moved from the stretcher 6 to the radiographing table 401 . Finally, radiography can be effectively achieved.

Also, according to an embodiment of the present invention, the stretcher coupler 503 is coupled to the stretcher 6 carrying the transfer plate 601 . Thus, according to the embodiment of the present invention, the transfer plate 601 can be easily moved from the stretcher 6 to the radiographing table 601 . Finally, radiography can be effectively achieved.

【Second Embodiment】

A second embodiment of the present invention is described below.

Fig. 10 includes side views illustrating an X-ray CT system according to a second embodiment of the present invention.

According to the present embodiment, the components of the X-ray CT system are different from those of the X-ray CT system according to the first embodiment. As shown in FIG. 10 , this embodiment further includes a caster member 721 , a transporter moving mechanism 722 , a caster receiver 723 , and a main body coupler 724 . Except for this point, this embodiment is the same as the first embodiment. Duplicate descriptions will be omitted.

As shown in FIG. 10, each caster member 721 includes a wheel as a rotating body. The wheels are located at one end and the other end of each side wing of the second conveying device 5 in the horizontal direction. Here, the wheels are arranged not only on the flank shown in FIG. 10 , but also on the opposite flank. That is, four wheels are included in total. According to this embodiment, the second transporter 5 is vertically moved onto the wheels of the caster member 721 by means of the transporter moving mechanism 722 .

When the second carrier 5 is moved close to the wheels by the carrier moving mechanism 722, the wheels of the caster member 721 are placed in the respective receiving spaces of the caster receivers 723 as described later. When the second transport device 5 is moved by the transport moving mechanism 722 to withdraw the wheels, the wheels of the caster part 721 are moved out of the receiving spaces of the respective caster receivers 723 . Thus, the second transport device 5 is separated from the ground and carried by the caster member 721 .

As shown in FIG. 10 , a carrier moving mechanism 722 is included in the second carrier 5 and vertically moves the second carrier 5 to the caster member 721 . That is, the carrier moving mechanism 722 raises or lowers the second carrier 5 . The transporter moving mechanism 722 brings the second transporter 5 and the caster part 721 closer to each other, whereby the caster part 721 is moved into each receiving space of the caster receiver 723 . Also, the carrier moving mechanism 722 withdraws the second carrier 5 and the caster part 721 from each other, whereby the caster part 721 moves out of the respective receiving spaces of the caster receiver 723 .

According to the present embodiment, the carrier moving mechanism 722 includes a spring 722a arranged at one end of the wheel of the caster part 721 and forcing the second carrier 5 to move vertically to the wheel of the caster part 721 . The transporter moving mechanism 722 further includes a spring support 722b supporting the other end of the spring 722a. The spring 722a included in the carrier moving mechanism 722 vertically expands or contracts to move the second carrier 5 to the caster part 721 vertically.

For example, when a maintenance worker applies a load on the second carrier 5 to move the second carrier 5 vertically downward, the spring 722a included in the carrier moving mechanism 722 contracts vertically so that the second carrier 5 is aligned with the second carrier 5. The caster members 721 are close to each other. Thus, the carrier moving mechanism 722 guides the caster member 721 into the receiving space of the caster receiver 723 . When the maintenance worker places an anchor (not shown) on the ground to maintain the contracted state of the spring 722a, the second transport device 5 is locked on the ground.

For example, when the spring 722a included in the carrier moving mechanism 722 forces the second carrier 5 to move vertically, the second carrier 5 is moved so as to withdraw the caster member 721 . Thus, the carrier moving mechanism 722 guides the caster member 721 out of the receiving space of the caster receiver 723 . When the maintenance worker removes the anchor (not shown) locking the second transport device 5, the spring 722a extends vertically. This allows the second transport device 5 to withdraw from the caster member 721 .

As shown in FIG. 10, a caster receiver 723 is formed in the second transport device 5, and stores the respective caster parts 721 in the receiving space therein. The caster receiver 723 has a tubular shape, and the inner space of the caster receiver 721 is called a receiving space, which receives each caster part 721 . According to the present embodiment, the receiving space of the caster receiver 723 receiving the caster member 721 is formed to communicate with the space in each spring lock 722b included in the transport moving mechanism 722 in which each spring 722a is stored. . As described above, when the second carrier 5 is moved close to the caster parts 721 by means of the carrier moving mechanism 722, each caster part 721 is stored in the receiving space of the respective caster receiver 723.

The marker coupler 724 is formed in the second carrier 5 and is coupled to a marker member 725 arranged as a marker at an installation place where the second carrier 5 is installed. According to the present embodiment, as shown in FIG. 10 , the marker coupler 724 is a concave portion of the bottom of the second transport device 5 and is shaped exactly the same as the marker part 725 so as to be arranged on the ground as a marker to help install the second transport device 5 Raised marker feature 725 can fit into marker coupler 724 . When the second carrier 5 is moved close to the caster member 721 by means of the carrier moving mechanism 722 , the raised marker member 704 is coupled to the marker coupler 724 . On the other hand, when the second carrier 5 is moved out of the caster member 721 by means of the carrier moving mechanism 722 , the marker member 725 is separated from the marker coupler 724 .

The installation of the second transport device 5 included in the X-ray CT system 1 according to the present embodiment will be described below.

FIG. 11 is a flowchart describing actions performed for mounting the second transport device 5 included in the second embodiment of the present invention.

As shown in FIG. 11, first, the second transport device 5 is moved to the reference position (S111).

Here, it is assumed that the second carrier 5 and the caster member 721 are moved away from each other by means of the carrier moving mechanism 722 . The maintenance worker pushes the second conveying device 5 horizontally to move the second conveying device 5 to the reference position.

12 is a part illustrating the states of the caster member 721, the transporter moving mechanism 722, the caster receiver 723, and the main body coupler 724 obtained when the second transporter 5 is moved to the reference position according to the second embodiment of the present invention. side view.

As shown in FIG. 12, according to the present embodiment, the spring 722a included in the carrier moving mechanism 722 is vertically extended so as to force the second carrier 5 to move vertically upward relative to the caster member 721. Thus, the second transport device 5 is separated from the ground and carried by the wheels of the caster member 721 . When the maintenance worker horizontally moves the second conveying device 5 so as to turn the wheels of the caster member 721, the second conveying device 5 is moved to the reference position. In other words, when the caster parts 721 leave the respective receiving spaces of the caster receivers 723, the second transport device 5 is moved to the reference position.

At this time, the raised marker part 725 which helps to install the second conveyer 5 can be fitted into the marker coupler 724 by moving the second conveyer 5 after alignment so as to be arranged at a reference position on the ground as a marker.

Thereafter, as shown in FIG. 11 , the second transport device 5 is fixed (S121).

Here, the second transport device 5 and the caster member 721 are moved closer to each other by means of the transport device moving mechanism 722, whereby the second transport device 5 is fixed in the second position.

13 is a part illustrating the states of the caster member 721, the transporter moving mechanism 722, the caster receiver 723, and the main body coupler 724 obtained when the second transporter 5 is fixed to the reference position according to the second embodiment of the present invention. side view.

As shown in FIG. 13, according to the present embodiment, when the maintenance worker applies a load on the second conveying device 5 so as to move the second conveying device 5 vertically downward, the spring 722a included in the conveying device moving mechanism 722 vertically shrink. This brings the second transport device 5 and the caster member 721 closer to each other. The caster parts 721 are moved to the receiving spaces of the respective caster receivers 723 , and the raised marker parts 725 are fitted into the marker couplers 724 .

Thereafter, the maintenance worker places an anchor (not shown) on the ground to fix the second transport device 5 on the ground. Therefore, the spring 722a is kept in a contracted state.

The movement of the second transport device 5 included in the X-ray CT system 1 according to the present embodiment from the installation position is described below. For example, when performing maintenance work to replace a slide ring incorporated in the scanner gantry 2 with a new one, the scanner gantry 2 is stripped of its cover. The second transport device 5 has to be moved from the installation location to another location in order to perform this maintenance work.

FIG. 14 is a flow chart describing the actions performed to remove the second transport device 5 included in the second embodiment of the present invention from the installation position.

First, as shown in FIG. 14, the second transport device 5 is separated from the ground (S211).

Here, as shown in FIG. 12, the second carrier 5 installed at a specific position as shown in FIG. 13 is separated from the ground so that the carrier moving mechanism 722 can withdraw the respective caster parts 721.

Specifically, the maintenance worker removes the anchor (not shown) used to secure the second transport device. This causes the contracted spring 722a to expand. Therefore, the spring 722a forces the second transport device 5 to move vertically upward. Finally, the second transport device 5 separates from the ground.

Thereafter, as shown in FIG. 14, the second transport device 5 is transferred from the reference position to another position (S212).

Here, the maintenance worker pushes the second transport device 5 so as to turn the wheels of the caster part 721 . Thereby, the second transport device 5 is shifted from the reference position to another position.

For example, after the maintenance work of replacing the slip ring is completed, the second transport device 5 is returned to the above-mentioned installation position.

As mentioned above, according to the present invention, the caster part 721 carries one of the components of the X-ray CT system 1 , for example the second transport device 5 . The carrier moving mechanism 722 included in the second carrier 5 vertically moves the second carrier 5 toward the caster member 721 . Here, the carrier moving mechanism 722 moves the second carrier 5 and the caster member 721 so that the second carrier 5 and the caster member 721 approach each other. Thereby, the caster part 721 is moved to each receiving space of the caster receiver 723 . When the spring included in the carrier moving mechanism 722 moves the second carrier 5 and the caster part 721 so that the second carrier 5 and the caster part 721 withdraw from each other, the caster part 721 is moved out of the respective receiving spaces of the caster receiver 723.

According to the present embodiment, the second transport device 5 and the caster member 721 are moved closer to each other. Thereby, the caster part 721 is moved out of each receiving space of the caster receiver 723 . The second transport device 5 is thus easily moved. On the other hand, when moving the second transport device 5 and the caster part 721 away from each other, the caster part 721 is moved into the respective receiving spaces of the caster receiver 723 . The second transport device 5 can be easily installed. Thus, according to the present embodiment, when performing maintenance work for replacing the slide ring incorporated in the scanner gantry 2 with a new one, or when transferring the second transport device 5 from the installation position to another position When, since the second conveying means can be easily moved, the efficiency of maintenance or installation work is improved. Also, according to the present embodiment, since the second transport device 5 can be easily installed or moved, the freedom of arranging components in the scanning room is improved.

The X-ray CT system 1 included in the foregoing embodiments corresponds to the radiographic system of the present invention. The scanning gantry 2 included in the foregoing embodiments corresponds to the scanner included in the present invention. The X-ray tube 20 included in the foregoing embodiments corresponds to the irradiator included in the present invention. Also, the X-ray detector 23 included in the foregoing embodiments is equivalent to the detector included in the present invention. Also, the second transport device 5 included in the foregoing embodiments corresponds to the transfer plate moving device main body or assembly included in the present invention. Also, the radiographic stand 401 included in the foregoing embodiment is equivalent to the radiographic stand included in the present invention. Also, the radiographic table vertical mover 402b included in the foregoing embodiments is equivalent to the radiographic table vertical mover included in the present invention. Also, the radiographic table horizontal shifter 402a included in the foregoing embodiments is equivalent to the radiographic table horizontal shifter included in the present invention. Also, the intermediate table 501 included in the foregoing embodiments is equivalent to the intermediate table included in the present invention. Also, the roller 501b included in the foregoing embodiment is equivalent to the roller included in the present invention. The intermediate table mover 502 included in the foregoing embodiments is equivalent to the intermediate table vertical mover included in the present invention. Also, the stretcher coupler 503 included in the foregoing embodiments is equivalent to the stretcher coupler included in the present invention. The caster member 721 included in the foregoing embodiments is equivalent to the caster member included in the present invention. The carrier moving mechanism 722 included in the foregoing embodiments is equivalent to the main body mover or the component mover included in the present invention. The caster receiver 723 included in the foregoing embodiments is equivalent to the caster receiver included in the present invention. Also, the marker coupler 724 included in the foregoing embodiments is equivalent to the marker coupler included in the present invention.

The present invention is not limited to the foregoing embodiments, and various modifications may be sampled.

For example, the foregoing embodiments relate to an X-ray CT system in which the scanner gantry 2 scans an object using X-rays. The present invention is not limited to this mode. For example, the invention is applicable to systems employing any other radiation such as gamma rays. Also, the present invention is applicable to an MRI system that obtains a nuclear magnetic resonance signal induced by a subject as raw data and generates an image of the subject based on the nuclear magnetic resonance signal.

In the foregoing embodiments, the intermediate table mover 502 moves the intermediate table 501 in the vertical direction V and the horizontal direction H in the same manner using parallel links. The present invention is not limited to this mode. Alternatively, the present invention can be applied to the case where the intermediate table mover 502 moves the intermediate table 501 only in the vertical direction V.

In the foregoing embodiments, the intermediate table mover 502 moves the intermediate table 501 in the vertical direction V from the first position V1 to the second position V2. Accordingly, the transfer board 601 carried by the intermediate table 501 at the first position V1 is moved to the radiographing table 401 stored in the storage space S1 so that the transfer board 601 can be carried by the radiographing table 401 . The present invention is not limited to this mode. Optionally, the radiographic table vertical mover 502b can move the radiographic table 401 from the second position V2 to the first position V1 in the vertical direction V. Therefore, the radiographic table 401 stored in the storage space S1 at the second position can be moved to the transfer plate 601 carried by the intermediate table 501 at the first position V1 so that the radiographic table 401 can carry the transfer plate 601 . In addition, both the transfer plate mover 502 and the radiographing table vertical mover 402b can move in the above-described manner so as to move the transfer plate 601 to the radiographing table 401 .

In the foregoing embodiments, the caster member 721 and the carrier moving mechanism 722 are included in the second carrier 5 . The present invention is not limited to this mode. Alternatively, the caster part 721 and the carrier moving mechanism 722 may be included in the first carrier 4 . In addition, each component constituting a radiographic system such as an X-ray CT system may be provided with a caster member 721 so that each component can be carried by the caster member. Also, each module may be provided with a module mover like the carrier moving mechanism 722 so that each module can move vertically to the caster part 721 . Also, each assembly can be provided with caster receivers and marker couplers. Caster receivers and marker couplers may be formed within the scanner gantry 2 .

In the foregoing embodiments, the transporter moving mechanism 722 moves the wheels of the caster member 721 using the spring 722a. The present invention is not limited to this mode. Alternatively, the transporter moving mechanism 722 may comprise actuators, each consisting of a piston coupled to each caster member 721 wheel and a cylinder in which the piston is stored, with the piston filling the cylinder with, for example, oil. medium. In this case, a medium is supplied to or removed from the cylinder in order to change the pressure inside the cylinder, thereby reciprocating the piston. Thus, the second transport device 5 is moved relative to the wheels of the respective caster members 721 . In addition, a motor may be used to move the position of the second transport device 5 relative to the wheels of the respective caster parts 721 . In addition, ball sockets may be used to implement both the wheels of the caster assembly and the functionality of the transporter movement mechanism 722 . In addition, the guide rails may be laid so that they extend in the direction in which the wheels of each caster unit 721 travel.

In the previous embodiments, the marker member 725 is a convex shape and the marker coupler 724 is a concave shape. The present invention is not limited to this mode. Alternatively, the marking member 725 may be concave in shape and the marking coupler 724 in a convex shape. Additionally, marker coupler 724 may include a ball plunger groove such that a spherical portion of the ball plunger groove included in marker coupler 724 can fit into marker member 725 having a concave portion.

Many widely different embodiments of the invention may be constructed without departing from the spirit and scope of the invention. It should be understood that, except as defined in the appended claims, the invention is not limited to the specific embodiments described in the specification.

Claims (6)

1. A radiographic system (1) comprising: the radiographing table (4), moving the transfer board (601) on which the subject is laid from the stretcher (6) to the radiographing table (4) and the radiographing table (4) carrying the transferred transfer board (601), A scanner (2) that scans the object lying on the transfer plate (601) carried by the radiographic table (4) in the radiographic space (29) in order to obtain raw data of the object and based on the data obtained with the scanner (2) The raw data yields an image of the object, an intermediate table (501) carrying a transfer plate (601) that moves from the stretcher (6); and a transfer plate mover (502), which moves the transfer plate (601) carried by the intermediate table (501) to the radiographing table (4) so that the transfer plate (601) can be carried by the radiographing table (4), wherein The intermediate table (501) is carried by the transfer plate mover (502), and wherein the intermediate table (501) and the radiographic table (4) are separate components. 2. Radiographic system (1) according to claim 1, wherein: The intermediate table (501) carries the transfer plate (601) at the first position in the vertical direction, and has a storage space for radiographing when the radiographing table (4) is separated from the transfer plate (601) carried at the first position. the table (4) is stored in a storage space formed at a second position lower than the first position; and The transfer plate mover (502) vertically moves at least one of the intermediate table (501) and the radiography table (4) so that the transfer plate (601) carried at the first position by the intermediate table (501) is aligned with the The radiographic tables (4) in the storage space of the intermediate table (501) at the second position are close to each other and thus cause the radiographic tables (4) to carry the transfer plate (601). 3. Radiographic system (1) according to claim 2, wherein: The transfer plate mover (502) includes an intermediate table vertical mover that vertically moves the intermediate table (501); and The intermediate table vertical mover moves the intermediate table (501) from the first position to the second position in the vertical direction, so that the transfer plate (601) carried in the first position by the intermediate table (501) can be moved to The radiographic table (4) is stored in the storage space and is carried by the radiographic table (4). 4. Radiographic system (1) according to claim 2 or 3, wherein: The transfer plate mover (502) includes a radiographic table vertical mover (402b) that moves the radiographic table (4) vertically; and The radiographic table vertical mover (402b) moves the radiographic table (4) from the second position to the first position in the vertical direction so that the radiographic table (4) stored in the storage space at the second position can be moved Moving to the transfer plate (601 ) carried at the first position by the intermediate table (501 ), and thus carrying the transfer plate (601 ). 5. The radiographic system (1) according to claim 2 or 3, further comprising a radiographic table level mover (402a) moving the radiographic table (4) horizontally towards the radiographic space (29), wherein: The middle workbench (501) is placed opposite to the radiographic table (4), and the radiographic space (29) between them moves the horizontal direction of the radiographic table (4) along the horizontal direction of the radiographic table mover (402a). one direction; and The radiographic table horizontal mover (402a) horizontally moves the radiographic table (4) through the radiographic space (29) so that the radiographic table (4) is stored in the storage space of the intermediate table (501). 6. The radiographic system (1) according to any one of claims 1-3, further comprising: The main body of the transfer plate moving device (5), which moves the transfer plate (601) moved from the stretcher (6) to the radiography table (4); caster members (721) carrying the body of the transfer plate mover; and A body mover included in the main body of the transfer plate mover vertically moves the main body of the transfer plate mover to the caster member (721).

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