KR20200046311A - Panel align device of X-ray Detector and X-ray Detector containing the same - Google Patents

Abstract

Disclosed are a panel alignment device of an X-ray image detector and the X-ray image detector. According to an aspect of the present invention, the panel alignment device is for adjusting the degree of alignment of pixels in an overlap section, in which two neighboring detection panels partially overlap each other, in the X-ray image detector. The device includes a pair of first left and right alignment units aligning a first movable detection panel horizontally at a position higher than the position of a fixed detection panel on a back plate in a panel case so that the fixed detection panel of the X-ray image detector overlaps a portion of the edge to form an overlap section. The first alignment unit moves the first movable detection panel and a neighboring detection panel in a first direction in which the panels overlap each other or in the first direction and in a second direction perpendicular to the first direction, and rotates the panels at a predetermined angle clockwise or counterclockwise around an arbitrary axis in a third direction perpendicular to the first direction and the second direction.

Description

Panel align device of X-ray detector and X-ray detector containing the same}

The present invention relates to a panel alignment device of an X-ray image detector, and more specifically, in a photoelectric conversion element of each pixel by visible light generated by X-rays reaching a scintillator composed of materials that react to X-rays. It relates to a panel alignment device for adjusting the alignment of the detection panel of the X-ray image detector for detecting the generated signal (charge), converting it into an electrical signal proportional to its size, and outputting it, and an X-ray image detector including the same.

In general, an X-ray imaging system is largely composed of an X-ray generator and an X-ray detector. The X-ray generator generates X-rays and irradiates them toward the subject, and the X-ray detector responds to the X-rays transmitted through the subject and transmits the emitted light (charge ) To convert the signal to obtain image data.

Among them, the X-ray image detector 1 includes an image sensor unit 2, an electronic circuit board 3 and an automatic exposure request signal generator 4, as illustrated in FIGS. 17 and 18, and an image sensor unit (2) again, a scintillator 2a composed of materials that react to the X-rays transmitted through the subject, and an image detector 2b for detecting light (visible light) generated by the scintillator 2a, Others include a gate driver 2c and a lead-out portion 2d.

As described above, the scintillator 2a is composed of a fluorescent material that generates light (visible light) in response to X-rays transmitted through the subject 6, and is irradiated and avoided from the X-ray generator 5. The X-rays transmitted through the specimen 6 are converted into visible light, and the image detector 2b acquires image data from the visible light converted by the scintillator 2a.

The image detection unit 2b is also generally called a photoelectric conversion panel and converts light by a scintillator into an electrical signal and outputs it. The image detector 2b includes a plurality of pixels arranged in a matrix, as illustrated in FIG. 13, and charges each pixel with a charge proportional to the amount of visible light generated by the scintillator 2a. .

The gate driver 2c performs the operation of sequentially selecting a specific line of the image detector 2b and applying a drive signal to the gate driver 2c under the control of a controller (not shown), and the lead-out portion 2d is the gate driver ( When a driving signal is applied to a specific line of the image detector 2b by 2c), it plays a role of reading the charge value charged in each pixel of the corresponding line.

On the other hand, in order to implement the X-ray image detector configured as described above in a form suitable for whole body imaging, a detection panel including a large area scintillator having a large effective detection area must be used. However, the large-area scintillator requires advanced manufacturing technology due to a problem in yield, and thus has a disadvantage in that it is expensive. In addition, special care is required in handling.

In order to solve this problem, a method has been proposed in which a detection panel including a scintillator is divided into several sheets and arranged in a flat shape. For example, as in the 'radiation imaging device' of Japanese Patent No. 6096220 (hereinafter referred to as 'prior literature'), the light receiving surfaces of the three detection panels are one plane when viewed from the X-ray irradiation direction. A technique for arranging to achieve a has been proposed.

In the arrangement of the three detection panels, the prior document adopts a configuration in which the edge portions of two neighboring detection panels are partially overlapped in order to prevent data loss occurring at the boundary between the detection panels. . This is because when the corners of two neighboring detection panels are arranged to contact each other without a gap, a portion where the effective detection regions are separated from each other may occur and information may be omitted.

That is, when the two detection panels are arranged on the same plane so that the adjacent end portions are in contact with each other without a gap, the effective detection areas between the two adjacent detection panels are spaced apart from each other due to the margin of margin at the edge of each detection panel. In this case, a situation in which information is missing occurs, and as a result, a method of arranging detection panels on different planes so as to overlap with each other as in the prior literature is adopted.

Of course, even when arranging so that the edges of two neighboring detection panels overlap on different planes as in the prior literature, the alignment degree of pixels of the detection panels arranged up and down in the overlapping section where the two neighboring detection panels overlap overlaps with the detection information. It is a very important factor in increasing the reliability of.

If the horizontal alignment (center coincidence) that matches the center between the corresponding pixels located up and down in the overlap section is not correct, that is, even if the pixel positions corresponding to the up and down in the overlap section are slightly distorted, information loss may occur. . This is because the detection information obtained from the pixels of the detection panel located below and the pixels of the detection panel located above are different from each other in the same detection area.

When arranging the edges of two neighboring detection panels to overlap a certain portion, the alignment between the two detection panels has a great influence on the overall image acquisition quality and further leads to a product reliability. Even if the alignment is accurately matched through the initial setting in the product assembly process, the alignment may be distorted by external physical impact during equipment installation or use.

However, in the case of the prior art disclosed in the above-mentioned prior art, there is a problem in that it is difficult to solve when a problem occurs due to the absence of an adjustment means for re-aligning the misalignment degree. There is a problem in that it is inevitable to obtain accurate image information for a specific location because it is impossible to obtain image information.

Japanese Registered Patent No. 6099620 (Registration Date 2017. 03.03.)

Technical problem to be solved by the present invention, in an X-ray image detector arranged so that the edges of two neighboring detection panels overlap a certain portion, the X-ray image detector that can easily adjust the degree of alignment between the two detection panels It is intended to provide a panel alignment device and an X-ray image detector including the same.

According to an aspect of the present invention as a solution to the problem,

As an apparatus for adjusting the degree of alignment of pixels in an overlap (OL) overlap section where a part of two neighboring detection panels overlap each other in an X-ray image detector,

Left and right aligning the first movable detection panel horizontally on a plane at a different height from the fixed detection panel on the back plate in the panel case so that the fixed detection panel of the X-ray image detector overlaps a part of the edge to form an overlap (OL) section. It includes a pair of first alignment unit;

The first alignment unit,

The first movable detection panel is moved relative to the first direction or the first direction and the second direction orthogonal to the first direction, and the watch is centered around an arbitrary axis in the third direction perpendicular to the first direction and the second direction. Or it provides a panel alignment device of the X-ray image detector, characterized in that configured to rotate a predetermined angle in a counterclockwise direction.

In addition, the present invention, the first movable detection panel and a part of the edge overlap the second movable detection panel in a horizontal direction on a plane of a different height from the first movable detection panel on the back plate to form an overlap (OL) section Further comprising a pair of left and right second alignment unit to align,

At this time, the second alignment unit moves the second movable detection panel with respect to the first direction or the first direction and the second direction orthogonal to the first direction, and the third perpendicular to the first direction and the second direction It may be configured to rotate a predetermined angle in a clockwise or counterclockwise direction around an arbitrary axis in the direction.

As an example, the first alignment unit and the second alignment unit applied to the present invention have the same configuration except for the heights of the support projections that support each of the first movable detection panel and the second movable detection panel spaced apart from the back plate. Can be

Preferably, each of the first alignment unit and the second alignment unit,

A fixing block installed at the edge of the back plate and extending in a first direction, and at least one holder installed along a first direction on a seating surface of the fixing block, and fixed to the seating surface of the fixing block by the holder Being installed on one side end of the fixed block and the shift bar having a plurality of the support protrusions, and includes a distance adjusting unit for adjusting the position of the shift bar in the first direction with respect to the seating surface, the holder for the fixed block One or more lock screws for restraining or releasing the movement of the shift bar may be installed.

In addition, the holder may be further provided with one width direction adjustment screw for adjusting the position of the shift bar in the second direction with respect to the seating surface.

In addition, the distance adjusting unit is installed on one side of the fixing block so as to face one end face of the shift bar, and a stopper having a fastening hole formed therein, and one end screwed into the fastening hole so that one end faces one end face of the shift bar. It may be composed of a longitudinal adjustment screw.

In addition, a guide groove surrounding a portion of the outer surface of the shift bar is formed in the holder, and the width of the guide groove may be formed larger than the width of the shift bar.

As another example, the first alignment unit and the second alignment unit applied to the present invention, except for the height of the shift bar supporting each of the first movable detection panel and the second movable detection panel at a different height from the back plate It may be the same configuration.

In this case, each of the first alignment unit and the second alignment unit,

A shift bar provided to be movable in the first direction along the stepped mounting surface inside the strut formed long along the first direction among the plurality of struts constituting the frame body of the panel case, and inside the strut of the side adjacent to the mounting surface. One or more holders installed along the first direction to restrain the shift bar from being detached on the mounting surface, and a distance that is installed at one end of the mounting surface and adjusts the position of the shift bar in the first direction on the mounting surface It may include a control unit, and the holder may be configured with one or more lock screws for restraining or releasing the movement of the shift bar on the mounting surface.

Here, the distance adjusting unit is installed on one side of the mounting surface so as to face one end surface of the shift bar, and a stopper having a fastening hole formed therein, and screwed into the fastening hole so that one end surface is in contact with one end surface of the shift bar. It may be a configuration consisting of a longitudinal adjustment screw.

In addition, a guide groove surrounding a portion of the outer surface of the shift bar is formed in the holder, and a width of the guide groove may be formed larger than the width of the shift bar.

Preferably, the above-described first alignment unit is configured such that a portion of the edge of the first movable detection panel overlaps the edge of the fixed detection panel to form an overlap (OL) section on a plane at a position higher than the fixed detection panel. Can be

In addition, the second alignment unit applied to the present invention is arranged such that a portion of the edge of the second movable detection panel overlaps a portion of the edge of the first movable detection panel on a plane at a higher position than the first movable detection panel to form an overlap section. It can be a configuration.

As another example, the first alignment unit may be aligned such that a portion of the edge of the first movable detection panel overlaps a portion of the edge of the fixed detection panel on a plane at a lower position than the fixed detection panel to form an overlap (OL) section. .

In addition, the second alignment unit is arranged such that a portion of the edge of the second movable detection panel overlaps a portion of the edge of the first movable detection panel on a plane at a lower position than the first movable detection panel to form an overlap (OL) section. It might be.

According to another aspect of the present invention as a solution to the problem,

In the X-ray image detector to detect the light generated by the phosphor of each pixel according to the incident X-rays and converts it into an electrical signal proportional to its size, and outputs it,

A panel case configured in the form of a rectangular box with one side opened;

Two or more detection panels are arranged in a stepwise manner to form an overlap (OL) section by overlapping a part of the edges in the receiving space of the panel case;

A circuit unit that performs processing on X-ray image information obtained through the detection panel; And

Includes a panel alignment device of the X-ray image detector according to the above-described one side, which is installed between the movable detection panel and the back plate of the panel case among the detection panel;

It provides an X-ray image detector, characterized in that configured to adjust the degree of alignment of the corresponding pixels up and down in the overlap (OL) section in which a part of the detection panel and another detection panel overlap each other by using the panel alignment device.

In the X-ray image detector according to another aspect of the present invention, the two or more detection panels are, for example, a fixed detection panel installed on one side of the receiving space of the panel case, and overlap with a part of the edge of the fixed detection panel (OL) The first movable detection panel is installed at a center portion of the panel case higher than the fixed detection panel to form a section, and the first movable detection panel is formed to overlap an edge portion of the first movable detection panel to form an overlap (OL) section. It may further include a second movable detection panel installed on the other side of the panel case.

As another example, the two or more detection panels, the fixed detection panel installed on one side of the receiving space of the panel case, and overlaps a portion of the edge of the fixed detection panel to form an overlap (OL) section lower than the fixed detection panel to A first movable detection panel installed in a central portion of the panel case, and a part of an edge of the first movable detection panel overlapping with each other so as to form an overlap (OL) section, lower than the first movable detection panel is installed on the other side of the panel case And a second movable detection panel.

At this time, each of the two or more detection panels is preferably composed of a scintillator composed of a fluorescent material that emits light in response to X-rays, and photoelectric conversion elements that convert and output the light emitted by the scintillator into an electrical signal. It may be a configuration including a photoelectric change panel.

According to an embodiment of the present invention, in an X-ray image detector arranged such that the edge portions of two neighboring detection panels overlap a certain portion, even if the pixel alignment of the two detection panels located in the overlapping section is wrong, one direction for the two-axis direction is There is an advantage that the misalignment degree can be easily adjusted by finely adjusting the position of the other detection panel with respect to the side detection panel and adjusting the horizontal rotation.

In addition, in the case of an X-ray image detector including an alignment unit according to one aspect, two or more plurality of detection panels are arranged in a stepped structure in a step shape so that an overlap section between neighboring detection panels is formed, thereby accommodating the detection panel. In addition to increasing the space utilization for the storage space inside the panel case, it is possible to reduce the thickness and weight of the entire device, thereby increasing the competitiveness of the product.

1 is a perspective view of an X-ray image detector to which a panel alignment device according to an aspect of the present invention is applied.
FIG. 2 is a perspective view of the top plate omitted in order to show the internal configuration of the X-ray image detector shown in FIG. 1.
FIG. 3 is a view of the X-ray image detector of FIG. 2 viewed from a plane (view viewed from an X-ray irradiation unit side).
4 is a side configuration diagram for showing an arrangement state of a plurality of detection panels accommodated in the panel case of FIG. 3.
Figure 5 is a detailed view showing an enlarged portion 'C' and 'D' in FIG.
6 is a diagram illustrating another preferred arrangement state of the detection panel constituting the X-ray image detector.
7 is a perspective view of a first alignment unit movably supporting the right side of the first movable detection panel when viewed from a direction in which X-rays are incident among a pair of left and right first alignment units.
8 is an enlarged perspective view showing a holder of the first alignment unit shown in FIG. 7.
9 is a cross-sectional view of the holder shown in FIG. 8 when viewed from the direction AA.
10 is an enlarged perspective view showing a distance adjusting unit of the first alignment unit shown in FIG. 7.
11 is a side view of the distance adjustment unit shown in FIG. 10;
12 is an exemplary view schematically showing an installation state of an X-ray image detector including a panel alignment device according to an aspect of the present invention.
13A is an operational conceptual view showing the movements of the first and second movable detection panels when adjusting the positions of each of the first and second movable detection panels performed by the panel alignment device in the installation state as shown in FIG. 12;
13B is an operational conceptual diagram showing another preferred embodiment of FIG. 13A.
14 is a perspective view showing another preferred embodiment of the first alignment unit, as another preferred embodiment of the panel alignment device according to an aspect of the present invention.
15 is an enlarged perspective view showing a holder of the first alignment unit shown in FIG. 14.
16 is an enlarged perspective view showing a distance adjusting unit of the first alignment unit shown in FIG. 14.
17 is a schematic configuration diagram of a conventional X-ray imaging system.
18 is a schematic configuration diagram of an image sensor unit illustrated in FIG. 17.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

Terms used in the specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, the terms “include” or “have” are intended to indicate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, or that one or more other features or It should be understood that the existence or addition possibilities of numbers, steps, actions, components, parts or combinations thereof are not excluded in advance.

Further, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from other components.

In addition, terms such as “… unit”, “… unit”, “… module” described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. You can.

In the description with reference to the accompanying drawings, the same reference numerals will be assigned to the same components, and redundant descriptions thereof will be omitted. In the following description, when it is determined that a detailed description of known technologies related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

Prior to explaining the present invention, a term related to direction to be used later will be defined as follows.

The first direction among the direction terms used hereinafter is a length direction of the X-ray image detector, more specifically, a direction corresponding to a width (W) direction of overlapping sections where two neighboring detection panels overlap each other, and the second direction Is defined as a direction orthogonal to the first direction on the same plane. In addition, the third direction is defined as a direction perpendicular to a plane divided by arbitrary axes in the first direction and the second direction orthogonal to each other.

First, the overall configuration of the X-ray image detector to which the panel alignment apparatus according to an aspect of the present invention is applied will be described schematically, and a configuration in which three detection panels are applied will be described as an example. Of course, it is revealed that the configuration in which the detection panel is three is one preferred embodiment for explaining the present invention, and the detection panel is not necessarily limited to three.

FIG. 1 is a perspective view of an X-ray image detector to which a panel alignment device according to an aspect of the present invention is applied, and FIG. 2 is a perspective view showing an omission of a top plate to show the internal configuration of the X-ray image detector shown in FIG. 1. And FIG. 3 is a view of FIG. 2 as viewed from a plane (view from an X-ray irradiator), and FIG. 4 is a side configuration diagram for showing the arrangement state of a plurality of detection panels accommodated in the panel case of FIG. 3.

1 to 4, the X-ray image detector 5 is a device for detecting pixels generated by phosphors and converting them into electrical signals proportional to their size, and outputting them according to X-ray incidence. It includes a panel case 20 configured in the form of a rectangular box with one side open. The panel case 20 accommodates a plurality of, preferably three, detection panels 30a to 30c in the inner receiving space 22.

The panel case 20 includes a frame body 200 configured in a rectangular shape by a plurality of pillars (支柱, 202L, 202R, 204L, 204R) in the form of a footnote, and each pillar of the frame body 200 It is installed so as to be in contact with the lower end and consists of a back plate 208 constituting the bottom surface, and the panel case 20 opening opposite the back plate 208 is provided with a rectangular top plate 10 corresponding to the opening size. do.

The top plate 10 may be composed of a lightweight material that can transmit X-rays, for example, rectangular flat carbon fiber reinforced plastics (CFRP), and a panel case ( It is stably fixed to the frame body 200 of 20) to partition one enclosed receiving space 22 together with the panel case 20.

The plurality of detection panels 30a to 30c are arranged in a stepwise manner as illustrated in FIG. 4 in the accommodation space 22 so that a part of the edges of each detection panel overlap each other to form an overlap (OL) section. Further, on the back plate 208 under the plurality of detection panels 30a to 30c, a circuit unit 40 that performs signal processing on X-ray image information obtained through the plurality of detection panels 30a to 30c is provided. Is placed.

A plurality of, preferably three, detection panels 30a to 30c arranged in a stepwise manner so as to overlap a part of the edges in the accommodation space 22 of the panel case 20, one side of the accommodation space 22 of the panel case 20 The fixed detection panel 30a installed and fixed to the first movable detection panel 30b arranged adjacent to one side of the fixed detection panel 30a, and the first movable detection panel 30b arranged adjacent to one side 2 Includes a movable detection panel 30c.

As an example, the first movable detection panel 30b has a part of its edge on a plane at a higher position than the fixed detection panel 30a through the first alignment unit 50-1, which will be described later, as shown in FIG. 4 (a). The fixed detection panel 30a may be installed in a form that is horizontally aligned with the central portion of the accommodation space 22 formed in the panel case 20 so as to overlap with each other on the edge portion to form an overlap (OL) section.

In addition, the second movable detection panel 30c has a portion of an edge on a plane at a higher position than the first movable detection panel 30b through the second alignment unit 50-2, which will be described later. 30b) may be installed in a form that is horizontally aligned with the other side of the receiving space 22 (the space opposite to the fixed detection panel 30a) so as to overlap with each other and form an overlap (OL) section.

Alternatively, as illustrated in (b) of FIG. 4, the first movable detection panel 30b through the first alignment unit 50-1 is part of an edge on a plane at a lower position than the fixed detection panel 30a. Are overlapped with each other to form an overlap (OL) section, and the second movable detection panel 30c is a plane at a lower position than the first movable detection panel 30b through the second alignment unit 50-2 described later. The edges of the images may be arranged to overlap each other to form an overlap (OL) section.

The fixed detection panel 30a serves as a reference when aligning the relative positions of the first movable detection panel 30b with respect to the fixed detection panel 30a (working to match the centers of the pixels corresponding to up and down in the overlap section), The first movable detection panel 30b is a reference when aligning the relative positions of the second movable detection panel 30c (working to match the centers of pixels corresponding to up and down in the overlap section).

5 is a detailed view illustrating enlarged parts 'C' and 'D' in FIG. 4.

5, each of the detection panels includes a scintillator (302) and a photoelectric change panel (304). The scintillator 302 is composed of a fluorescent material that emits light in response to X-rays irradiated from the outside, and the photoelectric conversion panel 304 converts the light emitted by the scintillator 302 into an electric (charge) signal. Output photodiode-based photoelectric conversion elements and switch elements that control the energization between the photoelectric conversion elements, for example, include a thin film transistor (TFT).

Each of the detection panels 30a to 30c also includes a spacer (not shown) disposed below the sensor unit 300 composed of the scintillator 302 and the photoelectric change panel 304, and a reinforcing member for reinforcing rigidity ( Sign omitted). It also includes a frame (omitted) that is arranged to face the direction in which the X-rays are input, and a shielding plate (omitted) that is disposed on the frame and prevents external transmission of light generated in response to X-rays.

As mentioned before, if the positions of the pixels (the smallest unit image sensing area composed of photoelectric conversion elements) corresponding to the top and bottom in the overlap (OL) section where the edges of the two detection panels overlap, are slightly distorted, the bottom of the same detection position And the image information acquired by each of the detection panels positioned relatively upward is different, so data loss or accuracy of the acquired data is deteriorated.

Accordingly, the X-ray image detector 5 applied to the present invention includes a panel alignment device 50 according to an aspect of the present invention for adjusting the degree of alignment between neighboring detection panels. The panel alignment device 50 is for adjusting the alignment degree of pixels corresponding to up and down in the overlap (OL, Overlap) section where a part of the detection panel and another detection panel overlap each other, among the plurality of detection panels 30a to 30c It is installed between the movable detection panel and the back plate 208 of the panel case 20.

The panel alignment device 50 is specifically, as shown in FIGS. 2 to 3, the left and right sides for adjusting the relative position of the first movable detection panel 30b with respect to the fixed detection panel 30a within the accommodation space 22 It includes a pair of first alignment units 50-1. In addition, a pair of left and right second alignment units 50-2 for adjusting the relative position of the second movable detection panel 30c with respect to the first movable detection panel 30b in the accommodation space 22 may be further included. have.

Of course, as mentioned above, the plurality of detection panels constituting the X-ray image detector 5 is not limited to three. Depending on the overall size or use environment of the X-ray image detector 5, it may be changed to a configuration consisting of two or more detection panels.

For example, when there are two detection panels constituting the X-ray image detector as illustrated in FIG. 6 (a), the alignment unit is the other movable detection panel 30b except for the fixed detection panel 30a that is an alignment criterion. ), Only one pair of left and right is applied, and in the case of four sheets as shown in Fig. 6 (b), three pairs of alignments correspond to each of the remaining movable detection panels 30b to 30d except for the fixed detection panel 30a, which is an alignment criterion. Units can be applied.

The first alignment unit 50-1 is the first movable detection panel 30b so that the fixed detection panel 30a of the aforementioned X-ray image detector 5 overlaps with a part of the edge to form the overlap (OL) section. Adjusting the relative position in the horizontal direction with respect to the fixed detection panel 30a while aligning it horizontally on a plane of a different height from the fixed detection panel 30a on the back plate 208 in the panel case 20. It is provided to be.

The first alignment unit 50-1 preferably places the first movable detection panel 30b on a plane higher than the fixed detection panel 30a so that a portion of the edges overlap each other to form the overlap (OL) section. It can be provided to align to.

Likewise, the second movable detection panel 30c is also provided with the back plate 208 so that the second alignment unit 50-2 also overlaps the first movable detection panel 30b to form the overlap (OL) section. ), While being aligned in a horizontal direction on a plane having a different height from the first movable detection panel 30b, it is provided to adjust a relative position in the horizontal direction with respect to the second movable detection panel 30c.

Preferably, the second alignment unit 50-2 is positioned above the first movable detection panel 30c so that the second movable detection panel 30c is formed such that a part of the edges overlap each other to form the overlap OL section. It can be provided to align on the plane.

The first alignment unit 50-1 and the second alignment unit 50-2 each include the first movable detection panel 30b and the second movable detection panel 30c in a first direction or a first direction and the same. It is configured to move with respect to the second orthogonal direction, and to rotate a predetermined angle in the horizontal direction with respect to the clockwise or counterclockwise direction about any axis in the third direction perpendicular to the first direction and the second direction.

In one embodiment, each of the first alignment unit 50-1 and the second alignment unit 50-2 is left and right on both sides with respect to each of the first movable detection panel 30b and the second movable detection panel 30c. Arranged to form a pair, only the heights of the support protrusions 560 supporting each of the first movable detection panel 30b and the second movable detection panel 30c apart from the back plate 208 are the same. Do.

Hereinafter, a configuration of the panel alignment device according to an aspect of the present invention will be described in detail by taking a first alignment unit as an example in a dimension of omitting a duplicate configuration for the same configuration.

FIG. 7 is a perspective view of a first alignment unit movably supporting the right side of the first movable detection panel when viewed from a direction in which X-rays are incident among a pair of left and right first alignment units, and FIG. 8 is a view of the first alignment unit shown in FIG. 7. 1 is an enlarged perspective view showing the holder of the alignment unit, and FIG. 9 is a cross-sectional view of the holder shown in FIG. 8 viewed along the line AA. And FIG. 10 is an enlarged perspective view of the distance adjusting unit of the first alignment unit shown in FIG. 7, and FIG. 11 is a side view of the distance adjusting unit illustrated in FIG. 10.

7 to 11, the first alignment unit (50-1, the second alignment unit 50-2 is equally applied) is installed at the edge of the back plate 208 and extends long in the first direction It includes a fixed block (52). The fixing block 52 may have a bar shape having a metal or non-metallic cross-section, preferably a rectangular shape, and the upper surface of the fixing block 52 (hereinafter referred to as a 'seating surface 520'). The holder 54 is installed.

The holder 54 is preferably, one or more, preferably three can be installed on the seating surface 520 at a predetermined interval along the first direction. Each holder 54 is securely fixed on the fixing block 52 through two or more fixing screws 540, and the shift bar 56 connected to the first movable detection panel 30b is connected to the seating surface 520. ) It serves to stably restrain the phase.

The holder 54 is provided with one or more lock screws, preferably two lock screws 542, as well as fixing screws 540 (see FIGS. 8 (a) and 9). The lock screw 542 is installed to face the fixing block 52 from the upper surface of the holder 54, and constrains the movement of the shift bar 56 in the first direction relative to the fixing block 52 or restrains the restraining state. It serves to release.

The holder 54 may also be further provided with one width direction adjustment screw 544, as shown in FIG. 8 (b). The width direction adjustment screw 544 is installed on the side portion of the holder 54 and is installed so that one end faces the side portion of the shift bar 56 passing through the holder 54 so that the shift bar with respect to the seating surface 520 It serves to adjust the position of the second direction of (56).

The width direction adjustment screw 544 can also be used to adjust the horizontal rotation angle of the first movable detection panel 30b. More specifically, the horizontal rotation angle of the first movable detection panel 30b by adjusting the width direction adjusting screw 544 provided in each of the plurality of holders 54 disposed on one fixing block 52 Can be adjusted.

For example, in the configuration shown in FIG. 7 in which three holders are arranged on one fixing block, when the width direction adjusting screw of the holder located on the right side is clamped with respect to the relatively centered holder, an arbitrary axis in the third direction The first movable detection panel 30b can be rotated in a horizontal direction with respect to the counterclockwise direction. Conversely, when the width direction adjustment screw of the holder located on the left side is tightened, the first movable detection panel 30b is clockwise. Can be rotated.

The shift bar 56 is provided with a plurality of support protrusions 560. The support protrusion 560 is formed at a height capable of aligning the first movable detection panel 30b in an arbitrary height stepwise with respect to the fixed detection panel 30a neighboring from the upper surface of the shift bar 56, and the first movable A binding piece 32 extending a predetermined length from the side surface of the detection panel 30b to the outside is seated on the upper surface of the support protrusion 560 in a corresponding position and is fixed with a screw or the like.

Accordingly, the shift bar 56 is a predetermined distance in the second direction or the first direction according to the rotation of the width direction adjustment screw 544 (see FIG. 8 (b)) or the length adjustment screw 584 to be described later. When moving, the movement of the shift bar 56 through the support protrusion 560 integrally formed on the shift bar 56 is transmitted to the binding piece 32 as it is, so that the second direction of the first movable detection panel 30b Alternatively, the position of the first direction may be varied, or the first movable detection panel 30b may be rotated at an angle around an arbitrary axis in the third direction.

8 and 9, a guide groove 548 is formed in each of the holders 54 to guide a stable first movement of the shift bar 56 by surrounding a part of the outer surface of the shift bar 56. . The width W2 of the guide groove 548 is formed to be a predetermined distance larger than the width W1 of the shift bar 56, so that the shift bar 56 can move along the second direction on the seating surface 520. Free space is secured.

At one end of the fixing block 52, a distance adjusting unit 58 for adjusting the position of the shift bar 56 in the first direction with respect to the seating surface 520 is provided. The distance adjusting unit 58 preferably changes the rotational motion of the screw into a linear motion of the shift bar 56 to change the position of the shift bar 56 with respect to the first direction. It may be an adjustment method.

The distance adjustment unit 58 of the screw adjustment method is specifically installed on one side of the fixing block 52 so as to face one end surface of the shift bar 56, as illustrated in FIGS. 10 and 11, and the shift bar ( A stopper 580 having a fastening hole 582 formed at a height corresponding to 56) and a longitudinal adjustment screw 584 screwed to the fastening hole 582 so that one end faces one end of the shift bar 56 ).

The screw adjustment method of FIGS. 10 and 11 is only an example for describing the present invention, and is not meant to be limited thereto. For example, a rack bar is formed at one end of the shift bar 56, and the shift bar 56 is seated on the seat surface 520, such as a rack and pinion method including an adjustment member having a pinion gear to engage with the gear teeth of the rack gear. ) As long as it can be moved in the first direction.

Meanwhile, one distance adjusting unit 58 is applied to one first alignment unit 50-1. For example, one distance adjusting unit 58 is applied to one end of the first alignment unit 50-1 on the left side. In addition, one distance is adjusted only at one end (the same point as the first alignment unit on the left side in the first direction position) in the first alignment unit 50-1 on the right side parallel to the first alignment unit 50-1 on the left side. A portion 58 is provided (see Fig. 3).

Although not shown, the second alignment unit 50-2 is also the same. That is, each of the second alignment unit 50-2 on the left and the second alignment unit 50-2 on the right is provided with one distance adjusting unit at the same point in the first direction. With this configuration, the first and second positions of the first movable detection panel 30b as well as the horizontal rotation angle can be varied by adjusting each of the left and right distance adjusting units.

12 is an exemplary view schematically showing an installation state of an X-ray image detector including a panel alignment device according to an aspect of the present invention, and FIG. 13A is a first view performed by the panel alignment device in the installation state as shown in FIG. , It is an operation conceptual diagram showing the movement of the first and second movable detection panels when adjusting the positions of each of the second movable detection panels.

With reference to FIGS. 12 to 13A and FIGS. 8 to 11 attached together, the position adjustment operation of the first and second movable detection panels will be briefly described in connection with operation and operation of the panel alignment device.

X-ray image detector 5 including a panel alignment device according to an aspect of the present invention, as shown in the example of Figure 12, the longitudinal direction (first direction) through the support (not shown) is approximately perpendicular to the installation target surface It can be installed to achieve, in this state, the alignment of the overlap (OL) section where the edges of the two adjacent detection panels overlap each other through the panel alignment device is also performed.

In the overlap (OL) section where the edges of the two adjacent detection panels overlap, the position of the corresponding pixel (the smallest unit image sensing area composed of a photoelectric conversion element) is slightly distorted or overlaps, the larger the detection part is Since the image information obtained is different, data is lost or the reliability of the acquired data is inevitably reduced.

The present invention adjusts the position of the detection panel that is relatively movable with respect to the reference detection panel, that is, overlaps two adjacent detection panels to a minimum or adjusts the degree of alignment of corresponding pixels up and down within an overlap (OL) section, The image data obtained from the detection panel can be corrected. At this time, the relative position adjustment between the two detection panels can be performed while viewing the image information displayed through the monitor.

For example, when an image reading result of the X-ray image detector 5 displayed through the monitor is required, adjustment of an overlap (OL) section in which the first movable detection panel 30b and the fixed detection panel 30a overlap each other is necessary. , The image data may be corrected by adjusting the lengthwise adjustment screw 584 or the width direction adjustment screw 544 (see FIG. 8 (b)) of each of the left and right pair of first alignment units 50-1.

That is, the lengthwise adjustment screws 584 of each of the pair of left and right first alignment units 50-1 that align the first movable detection panel 30b in a horizontal direction at a position higher than the fixed detection panel 30a, or By adjusting the width direction adjustment screw 544, the image data can be corrected, and as a result, the position of the detection panel can be accurately aligned.

If it is necessary to adjust the position of the first movable detection panel 30b in the first direction relative to the fixed detection panel 30a, the length adjustment screw 584 of the first alignment unit 50-1, which is disposed to the left and right, is disposed. Tighten or loosen to adjust the relative position in the first direction of the first movable detection panel 30b, and when the second direction position adjustment is necessary, the width direction adjustment screw 544 of the left and right first alignment units 50-1 (B) in FIG. 8) to adjust the position in the second direction.

In some cases, one detection panel (first movable detection panel 30b or second movable detection panel 30c) is referenced around an arbitrary axis in the third direction perpendicular to the first direction and the second direction. In some cases, rotation may be required to rotate a predetermined angle in the horizontal direction with respect to another detection panel (fixed detection panel 30a or first movable detection panel 30b).

In this case, loosen either one of the plurality of longitudinal adjustment screws 584 provided in each of the left and right first alignment units 50-1, and tighten the other longitudinal adjustment screws 584 for the other side, or The detection panel is angled in a horizontal direction by rotating the width adjusting screw 544 of another holder 54 adjacent to the holder 54 located in the center of the left or right first alignment unit 50-1. Can be rotated.

12 and 13A are views schematically showing the installation state of the X-ray image detector when the horizontal height of the fixed detection panel 30a is relatively lowest, as shown in FIG. 4 (a) attached above. If the horizontal height of the fixed detection panel 30a is the highest as shown in (b) of 4, the fixed detection panel 30a is positioned at the top and the second movable detection panel 30c is located at the bottom as shown in FIG. 13B. Will be located.

Meanwhile, FIG. 14 is a perspective view showing another preferred embodiment of the first alignment unit as another preferred embodiment of the panel alignment device according to an aspect of the present invention, and FIG. 15 is a view of the first alignment unit shown in FIG. 14. It is a perspective view showing an enlarged holder. And FIG. 16 is an enlarged perspective view showing a distance adjusting unit of the first alignment unit shown in FIG. 14.

Hereinafter, in describing another preferred embodiment of the panel alignment device according to an aspect of the present invention, the same reference numerals will be assigned to the same configuration as the panel alignment device according to the above-described embodiment, and functions of the same configuration Detailed overlapping description of will be omitted.

In addition, the panel alignment device according to another embodiment is also arranged such that each of the first alignment unit and the second alignment unit is a left and right pair on both sides of each of the first movable detection panel and the second movable detection panel described above. Only the heights of the shift bars 56 (see FIG. 14) supporting the first movable detection panel and each of the second movable detection panels spaced apart from each other are different, and the other configurations are the same.

Therefore, hereinafter, the first alignment unit will be described as another preferred embodiment.

14 to 16, the first alignment unit 50-1 (the second alignment unit is configured the same except for the height of the shift bar) includes a shift bar 56. The shift bar 56 is a stepped mounting surface inside the struts 202L, 202R formed long along the first direction among the plurality of struts (202L, 202R, 204L, 204R, see FIG. 2) constituting the frame body of the panel case. It is provided to be movable along the 212 in the first direction.

A holder 54 is installed inside the posts 202L and 202R on the side adjacent to the mounting surface 212. The holder 54 has a role of stably restraining the shift bar 56 from leaving on the mounting surface 212, as in the above-described one embodiment, and the shift bar 56 for the mounting surface 212 The first direction serves to guide the movement so that the movement can be stably performed.

The holder 54 may preferably be provided with one or more, preferably three, mounting surfaces 212 at predetermined intervals along the first direction. Each holder 54 is securely fixed inside the posts 202L and 202R on the side adjacent to the mounting surface 212 through two or more fixing screws 540, and the holder 54 includes one fixing screw 540 as well as one The lock screw 542 described above is provided.

The lock screw 542 may be installed vertically toward the shift bar 56 from the upper surface of the holder 54, and constrains the movement of the shift bar 56 in the first direction relative to the mounting surface 212 or It serves to release the restraint. That is, the clamping state of the shift bar 56 by clamping the lock screw 542 to restrain the shift bar 56 in the section overlapping the holder 54 with the mounting surface 212 or, conversely, loosening the lock screw 542 Can be turned off.

In this embodiment, the support protrusions 560 as in the above-described embodiment, which are formed to position neighboring detection panels at different heights, are omitted. The shift bar 56 directly connects the binding piece 32 extending a predetermined length from the side portion of the first movable detection panel 30b to the outside, but the first movable detection panel 30b and the second movable gum pool panel (not shown) ) This is because the height of the shift bar corresponding to each is configured differently.

Each of the holders 54 is formed with a guide groove 548 that guides a stable first movement of the shift bar 56 by enclosing a part of the outer surface of the shift bar 56, as in the above-described embodiment. The width W2 of the guide groove 548 is formed to be a predetermined distance larger than the width W1 of the shift bar 56, so that the shift bar 56 can move along the second direction on the mounting surface 212. Free space is secured.

At one end of the shift bar 56, a distance adjusting unit 58 for adjusting the position of the shift bar 56 in the first direction with respect to the mounting surface 212 is provided. The distance adjusting unit 58 preferably changes the rotational motion of the screw into a linear motion of the shift bar 56 to change the position of the shift bar 56 with respect to the first direction. It may be an adjustment method.

The distance adjustment unit 58 of the screw adjustment method is specifically installed on one side of the fixing block 52 so as to face one end surface of the shift bar 56, as shown in the example of FIG. 16, and the shift bar 56 and A stopper 580 having a fastening hole 582 formed at a corresponding height and a longitudinal adjustment screw 584 screwed to the fastening hole 582 so that one end faces one end of the shift bar 56 can do.

The screw adjustment method of FIG. 16 is not limited to this as one embodiment for explaining the present invention as in the embodiment. For example, a rack bar is formed at one end of the shift bar 56, and the shift bar 56 is mounted on the mounting surface 212, such as a rack and pinion method including an adjustment member having a pinion gear to engage with the gear teeth of the rack gear. ) As long as it can be moved in the first direction.

Meanwhile, as in one embodiment, one distance adjustment unit 58 is applied to one first alignment unit 50-1. For example, one distance adjusting unit 58 is applied to one end of the first alignment unit 50-1 on the left side. Further, the first alignment unit 50-1 on the right side parallel to the first alignment unit 50-1 on the left side (see FIG. 3) also has only one end (the same point as the first alignment unit on the left side in the first direction position). One distance adjuster 58 is provided.

Of course, although not shown, the second alignment unit is the same. That is, each of the second alignment unit on the left side and the second alignment unit on the right side is provided with one distance adjusting unit at the same position in the first direction. With this configuration, the first and second positions of the first movable detection panel 30b as well as the horizontal rotation angle can be varied by adjusting each of the left and right distance adjusting units.

According to the embodiment of the present invention as described above, in the X-ray image detector arranged so that the edge portions of two neighboring detection panels overlap a certain portion, even if the pixel alignment of the two detection panels located in the overlap section is wrong, the direction of the two axes is different. With respect to one detection panel, there is an advantage that the misalignment degree can be easily adjusted by finely adjusting the position of the other detection panel and adjusting the horizontal rotation.

In addition, in the case of an X-ray image detector including an alignment unit according to one aspect, a plurality of, preferably three, detection panels are arranged in a stepped structure in the form of steps so as to form overlapping sections between neighboring detection panels, In addition to increasing the space utilization for the storage space inside the panel case accommodating the detection panel, the overall device thickness and weight can be reduced, thereby enhancing the competitiveness of the product.

In the above, the X-ray image detector and the panel alignment device composed of three detection panels are shown and described as examples, but this is only one preferred embodiment for explaining the present invention, and is not limited to the case where the detection panel is configured of three. Make it clear. In other words, depending on the purpose or environment of the X-ray image detector, the detection panel may be composed of two or four or more sheets.

In the above detailed description of the present invention, only specific embodiments thereof have been described. However, it should be understood that the present invention is not limited to the specific forms mentioned in the detailed description, but rather includes all modifications, equivalents, and substitutes within the spirit and scope of the present invention as defined by the appended claims. Should be.

5: X-ray image detector 10: Top plate
20: panel case 22: accommodation space
30a: fixed detection panel 30b: first movable detection panel
30c: second movable detection panel 32: binding piece
40: circuit unit
50: panel alignment device 50-1: first alignment unit
50-2: second alignment unit 52: fixing block
54: holder 56: shift bar
58: distance control unit 200: frame body
202L, 202R, 204L, 204R: Prop 208: Back plate
300: sensor unit 302: scintillator
304: photoelectric conversion panel 520: seating surface
540: fixing screw 542: lock screw
544: Width adjustment screw 548: Guide groove
560: support projection 580: stopper
582: fastening hole 584: longitudinal adjustment screw

Claims (19)

In the X-ray image detector (5) as a device for adjusting the alignment of the pixels in the overlap (OL, Overlap) section in which some of the two adjacent detection panels overlap each other,
The first movable detection panel 30b is fixed on the back plate 208 in the panel case 20 so that the fixed detection panel 30a of the X-ray image detector 5 overlaps a part of the edge to form an overlap (OL) section. And a pair of left and right first alignment units 50-1 aligned horizontally on a plane of a different height from the detection panel 30a.
The first alignment unit 50-1,
The first movable detection panel 30b is moved with respect to a first direction or a first direction and a second direction orthogonal to the first direction, and an arbitrary axis in a third direction perpendicular to the first direction and the second direction is Panel alignment device of the X-ray image detector, characterized in that configured to rotate a predetermined angle in the clockwise or counterclockwise direction.
According to claim 1,
The second movable detection panel 30c is different from the first movable detection panel 30b on the back plate 208 so that the first movable detection panel 30b overlaps a portion of the edge to form an overlap (OL) section. Further comprising a pair of left and right second alignment unit (50-2) to align in the horizontal direction on the plane of,
The second alignment unit 50-2,
The second movable detection panel 30c is moved in a first direction or a first direction and a second direction orthogonal to the first direction, and an arbitrary axis in a third direction perpendicular to the first direction and the second direction is Panel alignment device of the X-ray image detector, characterized in that configured to rotate a predetermined angle in the clockwise or counterclockwise direction.
According to claim 2,
The first alignment unit 50-1 and the second alignment unit 50-2 support each of the first movable detection panel 30b and the second movable detection panel 30c from the back plate 208. The arrangement of the panel of the X-ray image detector, characterized in that the configuration is the same except for the height of the supporting projection (560).
According to claim 2,
Each of the first alignment unit 50-1 and the second alignment unit 50-2,
A fixing block 52 installed at the edge of the back plate 208 and elongated in a first direction,
One or more holders 54 installed along the first direction on the seating surface 520 of the fixing block 52,
Shift bar 56 fixed to the seating surface 520 of the fixing block 52 by the holder 54 and provided with a plurality of the support protrusions 560 and
It is installed at one end of the fixing block 52, and includes a distance adjusting unit 58 for adjusting the position of the shift bar 56 in the first direction with respect to the seating surface 520,
The holder 54 is provided with one or more lock screws 542 for restraining or releasing the movement of the shift bar 56 with respect to the fixing block 52. A panel alignment device for an X-ray image detector.
The method of claim 4,
Panel of the X-ray image detector characterized in that the holder 54 is further provided with one width direction adjustment screw 544 for adjusting the position of the second direction of the shift bar 56 with respect to the seating surface 520 Alignment device.

The method of claim 4,
The distance adjusting unit 58,
A stopper 580 installed on one side of the fixing block 52 to face one end face of the shift bar 56 and having a fastening hole 582 formed thereon;
Panel alignment device of the X-ray image detector, characterized in that it consists of a longitudinal adjustment screw 584 screwed to the fastening hole 582 so that one end faces the one end of the shift bar 56.
The method of claim 4,
A guide groove 548 surrounding a portion of the outer surface of the shift bar 56 is formed in the holder 54, and the width W2 of the guide groove 548 is the width W1 of the shift bar 56. Panel alignment device of the X-ray image detector, characterized in that larger.
According to claim 2,
The first alignment unit 50-1 and the second alignment unit 50-2 each of the first movable detection panel 30b and the second movable detection panel 30c are different heights from the back plate 208. The arrangement of the panel of the X-ray image detector, characterized in that the configuration is the same except for the height of the shift bar 56 to be spaced apart.
The method of claim 8,
Each of the first alignment unit 50-1 and the second alignment unit 50-2,
The stepped mounting surface 212 inside the struts 202L and 202R formed long along the first direction among the plurality of struts 202L, 202R, 204L, and 204R constituting the frame body 200 of the panel case 20 is provided. Accordingly, the shift bar 56 is provided to be movable in the first direction,
One or more holders 54 installed along the first direction inside the posts 202L and 202R of the adjacent side of the mounting surface 212 to restrain the shift bar 56 from being detached on the mounting surface 212 )Wow,
It is installed at one end of the mounting surface 212, and includes a distance adjusting unit 58 for adjusting the position of the first direction of the shift bar 56 on the mounting surface 212,
The holder 54 is provided with one or more lock screws 542 for restraining or releasing the movement of the shift bar 56 on the mounting surface 212.
The method of claim 9,
The distance adjusting unit 58,
A stopper 580 installed on one side of the mounting surface 212 to face one end surface of the shift bar 56 and having a fastening hole 582 formed thereon;
Panel alignment device of the X-ray image detector, characterized in that it consists of a longitudinal adjustment screw 584, which is screwed to the fastening hole 582 and configured so that one end faces one end of the shift bar 56.
The method of claim 9,
A guide groove 548 surrounding a part of the outer surface of the shift bar 56 is formed in the holder 54, and the width W2 of the guide groove 548 is greater than the width W1 of the shift bar 56. Panel alignment device of an X-ray image detector characterized by a large one.
According to claim 1,
The first alignment unit 50-1 overlaps a portion of the edge of the first movable detection panel 30b with a portion of the edge of the fixed detection panel 30a on a plane at a higher position than the fixed detection panel 30a ( OL) Panel alignment device of the X-ray image detector, characterized in that to align to form a section.
According to claim 2,
The second alignment unit 50-2 has a portion of the edge of the second movable detection panel 30c on a plane at a higher position than the first movable detection panel 30b. And overlapping (OL) overlapping panel alignment device of the X-ray image detector, characterized in that to align to form a section.
According to claim 1,
The first alignment unit 50-1 overlaps a portion of the edge of the first movable detection panel 30b with a portion of the edge of the fixed detection panel 30a on a plane at a lower position than the fixed detection panel 30a ( OL) Panel alignment device of the X-ray image detector, characterized in that to align to form a section.
According to claim 2,
The second alignment unit 50-2 has a part of the edge of the second movable detection panel 30c on a plane at a position lower than that of the first movable detection panel 30b. And overlapping (OL) overlapping panel alignment device of the X-ray image detector, characterized in that to align to form a section.
In the X-ray image detector (1) for detecting the light generated by the phosphor of each pixel in accordance with the incident X-rays and converts it into an electrical signal proportional to its size, and outputs it,
Panel case 20 is configured in the form of a rectangular box with one side open;
Two or more detection panels (30a ~ 30c) are arranged in a stepwise manner to form an overlap (OL) section of a portion of the edges overlap each other in the receiving space 22 of the panel case 20;
A circuit unit 40 for processing X-ray image information obtained through the detection panels 30a to 30c; And
Includes a panel alignment device 50 of the X-ray image detector according to claim 1 or 2, which is installed between the movable detection panel and the back plate 208 of the panel case 20 among the detection panels.
X-ray image detector, characterized in that configured to adjust the degree of alignment of the corresponding pixels up and down in the overlap (OL) section overlapping a portion of the detection panel and the other detection panel by using the panel alignment device 50.
The method of claim 16,
The two or more detection panels,
A fixed detection panel 30a installed at one side of the accommodation space 22 of the panel case 20,
The first movable detection panel 30b is installed at the center of the panel case 20 higher than the fixed detection panel 30a so as to overlap an edge portion of the fixed detection panel 30a to form an overlap (OL) section, and
A second movable detection panel installed on the other side of the panel case 20 higher than the first movable detection panel 30b so as to overlap an edge portion of the first movable detection panel 30b to form an overlap (OL) section. (30c), characterized in that it comprises an X-ray image detector.
The method of claim 16,
The two or more detection panels,
A fixed detection panel 30a installed at one side of the accommodation space 22 of the panel case 20,
A first movable detection panel 30b installed at a central portion of the panel case 20 lower than the fixed detection panel 30a so as to overlap an edge portion of the fixed detection panel 30a to form an overlap (OL) section, and
A second movable detection panel installed on the other side of the panel case 20 lower than the first movable detection panel 30b so as to overlap an edge portion of the first movable detection panel 30b to form an overlap (OL) section. (30c), characterized in that it comprises an X-ray image detector.
The method of claim 16,
Each of the two or more detection panels,
A scintillator 302 composed of a fluorescent material that emits light in response to X-rays,
And a photoelectric conversion panel 304 composed of photoelectric conversion elements for converting and outputting light emitted by the scintillator 302 into an electrical signal.

Images